2016-2019 Toyota 4Runner OEM Service & Repair Manual
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Last Modified: 03-17-2020 6.10:8.0.50 Doc ID: RM100000000RTB0
Model Year Start: 2016 Model: 4Runner Prod Date Range: [08/2015 - ]
Title: INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: GENERAL INFORMATION; 2016 - 2020 MY 4Runner
[08/2015 - ]
GENERAL INFORMATION
A large number of ECU controlled systems are used in the 4RUNNER. In general, ECU controlled systems are considered to be very
intricate, requiring a high level of technical knowledge to troubleshoot. However, most problem checking procedures only involve
inspecting the ECU controlled system's circuits one by one. An adequate understanding of the system and a basic knowledge of
electricity is enough to perform effective troubleshooting, accurate diagnoses and necessary repairs.
1. TROUBLESHOOTING PROCEDURES
The troubleshooting procedures consist of diagnosis procedures for when a DTC is stored and diagnosis procedures for when no
DTC is stored. The basic idea is explained in the following table.
PROCEDURE
TYPE
DETAILS TROUBLESHOOTING METHOD
DTC Based
Diagnosis
The diagnosis procedure is based on
the DTC that is stored.
The malfunctioning part is identified based on the DTC detection
conditions using a process of elimination.
The possible trouble areas are eliminated one-by-one by use of the
Techstream and inspection of related parts.
Symptom Based
Diagnosis
(No DTCs
stored)
The diagnosis procedure is based on
problem symptoms.
The malfunctioning part is identified based on the problem symptoms
using a process of elimination.
The possible trouble areas are eliminated one-by-one by use of the
Techstream and inspection of related parts.
Vehicle systems are complex and use many ECUs that are difficult to inspect independently. Therefore, a process of elimination
is used, where components that can be inspected individually are inspected, and if no problems are found in these components,
the related ECU is identified as the problem and replaced.
It is extremely important to ask the customer about the environment and the conditions present when the problem occurred
(Customer Problem Analysis). This makes it possible to simulate the conditions and confirm the symptom. If the symptom
cannot be confirmed or the DTC does not recur, the malfunctioning part may not be identified using the troubleshooting
procedure, and the ECU for the related system may be replaced even though it is not defective. If this happens, the original
problem will not be solved.
In order to prevent endless expansion of troubleshooting procedures, the troubleshooting procedures are written with the
assumption that multiple malfunctions do not occur simultaneously for a single problem symptom.
To identify the malfunctioning part, troubleshooting procedures narrow down the target by separating components, ECUs and
wire harnesses during the inspection. If the wire harness is identified as the cause of the problem, it is necessary to inspect not
only the connections to components and ECUs but also all of the wire harness connectors between the component and the ECU.
2. DESCRIPTION
System data and the Diagnostic Trouble Codes (DTCs) can be read from the Data Link Connector 3 (DLC3) of the vehicle. When the
system seems to be malfunctioning, use the Techstream to check for a malfunction and perform repairs.
3. DATA LINK CONNECTOR 3 (DLC3)
(a) The vehicle ECU uses the ISO 15765-4 communication protocol. The terminal arrangement of the DLC3 complies with SAE J1962
and matches the ISO 15765-4 format.
TERMINAL NO. (SYMBOL) TERMINAL DESCRIPTION CONDITION SPECIFIED CONDITION
7 (SIL) - 5 (SG) Bus "+" line During transmission Pulse generation
4 (CG) - Body ground Chassis ground Always Below 1 Ω
5 (SG) - Body ground Signal ground Always Below 1 Ω
16 (BAT) - Body ground Battery positive Always 11 to 14 V
6 (CANH) - 14 (CANL) CAN bus line Ignition switch off* 54 to 69 Ω
6 (CANH) - 4 (CG) HIGH-level CAN bus line Ignition switch off* 200 Ω or higher
14 (CANL) - 4 (CG) LOW-level CAN bus line Ignition switch off* 200 Ω or higher
6 (CANH) - 16 (BAT) HIGH-level CAN bus line Ignition switch off* 6 kΩ or higher
14 (CANL) - 16 (BAT) LOW-level CAN bus line Ignition switch off* 6 kΩ or higher
NOTICE:
*: Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the ignition switch, any other
switches, or the doors.
If the result is not as specified, the DLC3 may have a malfunction. Repair or replace the harness and connector.
(b) Connect the cable of the Techstream to the DLC3, turn the ignition switch on and attempt to use the tester. If the display indicates
that a communication error has occurred, there is a problem either with the vehicle or with the tester.
HINT:
If communication is normal when the tester is connected to another vehicle, inspect the DLC3 of the original vehicle.
If communication is still not possible when the tester is connected to another vehicle, the problem may be in the tester itself.
Consult the Service Department listed in the tester's instruction manual.
FOR USING TECHSTREAM
Before using the Techstream, read the tester operator's manual thoroughly.
If the tester cannot communicate with the ECU controlled systems when connected to the DLC3 with the ignition switch in the
on position and the tester turned on, there is a problem on the vehicle side or tester side.
a. If communication is possible when the tester is connected to another vehicle, inspect the diagnosis data link line
(bus (+) line), CANH and CANL lines, and the power circuits for the vehicle ECUs.
b. If communication is still not possible when the tester is connected to another vehicle, the problem is probably in the
tester itself. Perform the Self Test procedure outlined in the tester operator's manual.
Last Modified: 03-17-2020 6.10:8.0.50 Doc ID: RM100000000RTB2
Model Year Start: 2016 Model: 4Runner Prod Date Range: [08/2015 - 08/2019]
Title: INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING; 2016 -
2019 MY 4Runner [08/2015 - 08/2019]
HOW TO PROCEED WITH TROUBLESHOOTING
1. OPERATION FLOW
HINT:
Perform troubleshooting in accordance with the procedures below. The following is an outline of basic troubleshooting procedures.
Confirm the troubleshooting procedures for the circuit you are working on before beginning troubleshooting.
2. 1.VEHICLE BROUGHT TO WORKSHOP
PROCEED TO
NEXT
3. 2.CUSTOMER PROBLEM ANALYSIS
(a) Ask the customer about the conditions and environment when the problem occurred.
PROCEED TO
NEXT
4. 3.INSPECT BATTERY VOLTAGE
Standard voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding.
PROCEED TO
NEXT
5. 4.SYMPTOM CONFIRMATION AND DTC (INCLUDING FREEZE FRAME DATA) CHECK
(a) Visually check the wire harnesses, connectors and fuses for open and short circuits.
(b) Warm up the engine to the normal operating temperature.
(c) Confirm the problem symptoms and conditions, and check for DTCs.
Result
RESULT PROCEED TO
DTC is output Go to step 5
DTC is not output Go to step 6
6. 5.DTC CHART
(a) Check the results obtained in the DTC check. Then find the output DTC in the DTC chart. Look at the "Trouble Area" column for a
list of potentially malfunctioning circuits and/or parts.
PROCEED TO
Go to step 7
7. 6.PROBLEM SYMPTOMS TABLE
(a) Check the results obtained in the symptom confirmation. Then find the problem symptoms in the problem symptoms table. Look at
the "Suspected Area" column for a list of potentially malfunctioning circuits and/or parts.
PROCEED TO
PROCEED TO
NEXT
8. 7.CIRCUIT INSPECTION OR PARTS INSPECTION
(a) Confirm the malfunctioning circuit or part.
PROCEED TO
NEXT
9. 8.ADJUST, REPAIR OR REPLACE
(a) Adjust, repair or replace the malfunctioning circuit or parts.
PROCEED TO
NEXT
10. 9.CONFIRMATION TEST
(a) After the adjustment, repairs or replacement, confirm that the malfunction no longer exists. If the malfunction does not reoccur,
perform a confirmation test under the same conditions and in the same environment as when the malfunction occurred the first
time.
PROCEED TO
END
11. CUSTOMER PROBLEM ANALYSIS
HINT:
In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in
order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the
customer about the problem and the conditions at the time the malfunction occurred.
Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
The following 5 questions are important points in the problem analysis:
What Vehicle model, system name
When Date, time, occurrence frequency
Where Road conditions
Under what conditions? Running conditions, driving conditions, weather conditions
How did it happen? Problem symptoms
12. SYMPTOM CONFIRMATION AND DIAGNOSTIC TROUBLE CODE
HINT:
The diagnostic system in the 4RUNNER has various functions.
The first function is the Diagnostic Trouble Code (DTC) check. A DTC is a code stored in the ECU memory whenever a malfunction in
the signal circuits to the ECU occurs. In a DTC check, a previous malfunction DTC can be checked by a technician during
troubleshooting.
Another function is the Input Signal Check, which checks if the signals from various switches are sent to the ECU correctly.
By using these functions, the problem areas can be narrowed down and troubleshooting is more effective. Diagnostic
functions are incorporated in the following systems in the 4RUNNER.
SYSTEM DTC
CHECK
(NORMAL
MODE)
DTC
CHECK
(CHECK
MODE)
FREEZE
FRAME
DATA
SENSOR CHECK/TEST MODE
(INPUT SIGNAL CHECK)
DATA
LIST
ACTIVE
TEST
CUSTOMIZE
PARAMETER
1GR-FE SFI System ○ ○ ○ - ○ ○ -
Cruise Control System ○ - - - ○ ○ -
A750E Automatic Transmission
System
○ ○ ○ - ○ ○ -
SYSTEM DTC
CHECK
(NORMAL
MODE)
DTC
CHECK
(CHECK
MODE)
FREEZE
FRAME
DATA
SENSOR CHECK/TEST MODE
(INPUT SIGNAL CHECK)
DATA
LIST
ACTIVE
TEST
CUSTOMIZE
PARAMETER
A750F Automatic Transmission
System
○ ○ ○ - ○ ○ -
Kinetic Dynamic Suspension
System
○ - - - ○ ○ -
Tire Pressure Warning System ○ - - - ○ ○ -
Vehicle Stability Control System
(for Hydraulic Brake Booster)
○ - ○ ○ ○ ○ -
Vehicle Stability Control System
(for Vacuum Brake Booster)
○ - ○ ○ ○ ○ -
Power Steering System ○ - - - ○ - -
Steering Lock System ○ - - - ○ ○ -
Audio and Visual System ○ - - - ○ - -
Navigation System ○ - - - ○ - -
Intuitive Parking Assist System - - - - - - -
Rear View Monitor System (for
Radio and Display Type)
○ - - - - - -
Rear View Monitor System (for
Navigation Receiver Type)
○ - - - - - -
Garage Door Opener System - - - - - - -
Safety Connect System ○ - - - ○ ○ ○
LIN Communication System ○ - - - ○ - -
CAN Communication System ○ - - - - - -
Power Door Lock Control System - - - - ○ ○ ○
Wireless Door Lock Control
System
(w/ Smart Key System)
○ - - - ○ ○ ○
Wireless Door Lock Control
System
(w/o Smart Key System)
○ - - - ○ ○ ○
Key Reminder Warning System - - - - ○ - -
Smart Key System
(for Start Function)
○ - - - ○ ○ -
Smart Key System
(for Entry Function)
○ - - - ○ ○ ○
Engine Immobiliser System
(w/ Smart Key System)
○ - - - ○ ○ -
Engine Immobiliser System
(w/o Smart Key System)
○ - - - ○ ○ -
Theft Deterrent System - - - - ○ ○ -
Lighting System
(for Interior)
- - - - ○ ○ ○
Meter / Gauge System ○ - - - ○ ○ ○
Clock System - - - - - - -
Airbag System ○ ○ - - ○ - -
Occupant Classification System ○ - - - ○ - -
Front Power Seat Control System - - - - - - -
Seat Heater System - - - - - - -
Seat Belt Warning System - - - - ○ ○ ○
Air Conditioning System
(for Automatic Air Conditioning
System)
○ - - - ○ ○ ○
SYSTEM DTC
CHECK
(NORMAL
MODE)
DTC
CHECK
(CHECK
MODE)
FREEZE
FRAME
DATA
SENSOR CHECK/TEST MODE
(INPUT SIGNAL CHECK)
DATA
LIST
ACTIVE
TEST
CUSTOMIZE
PARAMETER
Air Conditioning System
(for Manual Air Conditioning
System)
○ - - - ○ ○ -
Power Window Control System ○ - - - ○ ○ ○
Window Defogger System - - - - - ○ -
Sliding Roof System ○ - - - ○ ○ ○
Power Mirror Control System - - - - - - -
Wiper and Washer System - - - - - ○ ○
Lighting System (for Exterior) ○ - - - ○ ○ ○
Horn System - - - - - - -
Automatic Running Board System ○ - - - - ○ -
In the DTC check, it is very important to determine whether the problem indicated by the DTC is either: 1) still occurring; or 2)
occurred in the past but has since returned to normal. In addition, the DTC should be compared to the problem symptom to see if
they are related. For this reason, DTCs should be checked before and after confirmation of symptoms (i.e., whether or not problem
symptoms exist) to determine current system conditions, as shown in the flowchart below.
Never skip the DTC check. Failing to check DTCs may, depending on the case, result in unnecessary troubleshooting for systems
operating normally or lead to repairs not related to the problem. Follow the procedures listed in the flowchart in the correct order.
The following flowchart shows how to proceed with troubleshooting using the DTC check. Directions from the flowchart will indicate
how to proceed either to DTC troubleshooting or to the troubleshooting of each problem symptom.
13. 1.DTC CHECK
PROCEED TO
NEXT
14. 2.MAKE A NOTE OF DTC DISPLAYED AND THEN CLEAR MEMORY
PROCEED TO
NEXT
15. 3.SYMPTOM CONFIRMATION
Result
RESULT PROCEED TO
No symptoms exist Go to step 4
Symptoms exist Go to step 5
16. 4.SIMULATION TEST USING SYMPTOM SIMULATION METHODS
PROCEED TO
NEXT
17. 5.DTC CHECK
Result
RESULT PROCEED TO
DTC is not output GO TO STEP 6
DTC is output TROUBLESHOOTING OF PROBLEM INDICATED BY DTC
18. 6.SYMPTOM CONFIRMATION
Result
RESULT PROCEED TO
Symptoms exist TROUBLESHOOTING OF EACH PROBLEM SYMPTOM
No symptoms exist SYSTEM NORMAL
If a DTC was displayed in the initial DTC check, the problem may have occurred in a wire harness or connector in that circuit in the past.
Check the wire harness and connectors.
The problem is still occurring in a place other than the diagnostic circuit (the DTC displayed first is either for a past problem or a
secondary problem).
19. SYMPTOM SIMULATION
HINT:
The most difficult case in troubleshooting is when no problem symptoms occur. In such a case, a thorough problem analysis must
be carried out. A simulation of the same or similar conditions and environment in which the problem occurred in the customer
vehicle should be carried out. No matter how much skill or experience a technician has, troubleshooting without confirming the
problem symptoms will lead to important repairs being overlooked and mistakes or delays.
For example:
With a problem that only occurs when the engine is cold or as a result of vibration caused by the road during driving, the problem
can never be determined if the symptoms are being checked on a stationary vehicle or on a vehicle with a warmed-up engine.
Vibration, heat or water penetration (moisture) is difficult to reproduce. The symptom simulation tests below are effective
substitutes for the conditions and can be applied on a stationary vehicle.
Important points in the symptom simulation test:
In the symptom simulation test, the problem symptoms as well as the problem area or parts must be confirmed. First, narrow down
the possible problem circuits according to the symptoms. Then, connect the tester and carry out the symptom simulation test,
judging whether the circuit being tested is defective or normal. Also, confirm the problem symptoms at the same time. Refer to the
problem symptoms table for each system to narrow down the possible causes.
To reproduce DTCs, it is necessary to satisfy the respective DTC detection conditions.
(a) VIBRATION METHOD:
When a malfunction seems to occur as a result of vibration.
(1) PART AND SENSOR
Apply slight vibration with a finger to the part of the sensor suspected to be the cause of the problem, and check whether or not
the malfunction occurs.
NOTICE:
Applying strong vibration to relays may open them.
(2) CONNECTORS
Slightly shake the connector vertically and horizontally.
(3) WIRE HARNESS
Slightly shake the wire harness vertically and horizontally.
HINT:
The connector joint and fulcrum of the vibration are the major areas that should be checked thoroughly.
(b) HEAT METHOD:
When a malfunction seems to occur when the area in question is heated.
(1) Heat the component that is the possible cause of the malfunction with a hair dryer or similar device. Check if the malfunction
occurs.
NOTICE:
Do not heat to more than 60°C (140°F). Exceeding this temperature may damage components.
Do not apply heat directly to the parts in the ECU.
(c) WATER SPRINKLING METHOD:
When a malfunction seems to occur on a rainy day or in high-humidity.
(1) Sprinkle water onto the vehicle and check if the malfunction occurs.
NOTICE:
Never sprinkle water directly into the engine compartment. Indirectly change the temperature and humidity by spraying water onto
the front of the radiator.
Never apply water directly onto the electronic components.
HINT:
If the vehicle has or had a water leakage problem, the leakage may have damaged the ECU or connections. Look for evidence of
corrosion or short circuits. Proceed with caution during water tests.
(d) HIGH ELECTRICAL LOAD METHOD:
When a malfunction seems to occur when the electrical load is excessive.
(1) Turn on the heater blower, headlights, rear window defogger and all other electrical loads. Check if the malfunction reoccurs.
20. DIAGNOSTIC TROUBLE CODE CHART
Look for output Diagnostic Trouble Codes (DTCs) (from the DTC checks) in the Diagnostic Trouble Code Chart of the appropriate section.
Use the chart to determine the trouble area and the proper inspection procedure. A description of each column of the chart is below.
ITEM DESCRIPTION
DTC No. Indicates the diagnostic trouble code.
Detection
Item
Indicates the system or details of the problem.
Trouble Area Indicates the suspected areas of the problem.
See Page
Indicates the page where the inspection procedures for each circuit can be found, or where there are instructions for
checks and repairs.
21. PROBLEM SYMPTOMS TABLE
When a "Normal" code is output during a DTC check but the problem is still occurring, use the Problem Symptoms Table. The suspected
areas (circuits or parts) for each problem symptom are in the table. The suspected areas are listed in order of probability. A description of
each column of the chart is below.
HINT:
In some cases, the problem is not detected by the diagnostic system even though a problem symptom is present. It is possible that
the problem is occurring outside the detection range of the diagnostic system, or that the problem is occurring in a completely
different system.
ITEM DESCRIPTION
Symptom -
Suspected Area Indicates the circuit or part which needs to be checked.
See Page Indicates the page where the flowchart for each circuit is located.
22. CIRCUIT INSPECTION
A description of the main areas of each circuit inspection is below.
ITEM DESCRIPTION
Circuit Description The major role and operation of the circuit and its component parts are explained.
DTC No., DTC Detection
Condition, Trouble Area
Indicates the diagnostic trouble codes, diagnostic trouble code detection conditions, and trouble areas of a
problem.
Wiring Diagram
This shows a wiring diagram of the circuit.
Use this diagram together with an ELECTRICAL WIRING DIAGRAM to thoroughly understand the circuit.
Inspection Procedures
Use the inspection procedures to determine if the circuit is normal or abnormal. If abnormal, use the inspection
procedures to determine whether the problem is located in the sensors, actuators, wire harnesses or ECU.
Inspection Procedure
Connector Illustrations
Connector being checked is connected:
Connections of tester are indicated by (+) or (-) after the terminal name.
Connector being checked is disconnected:
For illustrations of inspections between a connector and body ground, information about the body
ground is not shown in the illustration.
Last Modified: 03-17-2020 6.10:8.0.50 Doc ID: RM100000000RTB1
Model Year Start: 2016 Model: 4Runner Prod Date Range: [08/2015 - ]
Title: INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: ELECTRONIC CIRCUIT INSPECTION PROCEDURE; 2016 -
2020 MY 4Runner [08/2015 - ]
ELECTRONIC CIRCUIT INSPECTION PROCEDURE
1. BASIC INSPECTION
(a) WHEN MEASURING RESISTANCE OF ELECTRONIC PARTS
(1) Unless otherwise stated, all resistance measurements should be made at an ambient temperature of 20°C (68°F). Resistance
measurements may be inaccurate if measured at high temperatures, i.e. immediately after the vehicle has been running.
Measurements should be made after the engine has cooled down.
(b) HANDLING CONNECTORS
(1) When disconnecting a connector, first squeeze the mating halves tightly together to release the lock, and then press the lock
claw and separate the connector.
(2) When disconnecting a connector, do not pull on the harnesses. Grasp the connector directly and separate it.
(3) Before connecting a connector, check that there are no deformed, damaged, loose or missing terminals.
(4) When connecting a connector, press firmly until it locks with a "click" sound.
(5) If checking a connector with a TOYOTA electrical tester, check the connector from the backside (harness side) using a mini test
lead.
NOTICE:
As a waterproof connector cannot be checked from the backside, check it by connecting a sub-harness.
Do not damage the terminals by moving the inserted tester needle.
(c) CHECKING CONNECTORS
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2016-2019 Toyota 4Runner OEM Service & Repair Manual
Engine covered:
- 4.0L 1GR-FE V6
The 2016-2019 Toyota 4Runner OEM Service & Repair Manual is the factory-issued workshop manual covering service, diagnostics, and repair procedures for the 5th-generation (N280) Toyota 4Runner. This manual provides detailed technical information for the 4.0L 1GR-FE V6 engine and associated systems used in 2016 through 2019 models.
Designed for dealership-level servicing, this manual walks through mechanical repairs, electronic diagnostics, maintenance schedules, and system inspections using factory procedures and specifications. Whether you’re a professional technician or a capable DIY owner maintaining your own 4Runner, this guide lays everything out in a structured, step-by-step format.
What’s Inside the 2016-2019 Toyota 4Runner Service & Repair Manual
General Information & Factory Service Procedures
Introductory service information, vehicle identification, preparation procedures, standard bolt tightening sequences, torque specs, and factory maintenance schedules. This section also outlines proper lifting points, safety procedures, and general workshop practices specific to the 4Runner platform.
Engine Mechanical & Control Systems (1GR-FE 4.0L V6)
Complete service coverage for the 1GR-FE V6 engine including mechanical disassembly and reassembly, cylinder head service, timing components, lubrication system, cooling system, and intake and exhaust systems. The manual also covers fuel delivery, emission control components, starting system diagnostics, charging system checks, battery testing, and cruise control system diagnostics. Troubleshooting procedures are laid out with inspection steps and specification references.
Automatic Transmission & Drivetrain Service
Detailed repair procedures for the A750E and A750F automatic transmissions including removal, installation, inspection, and internal component checks. Transfer case service for VF2A, VF2BM, and VF4BM units is covered along with 4WD system diagnostics. This section also includes drive shaft and propeller shaft service, front and rear differential overhaul procedures, and axle component inspection.
Brake System & Stability Control
Factory repair procedures for front and rear disc brakes, parking brake adjustment, hydraulic brake system bleeding, and master cylinder inspection. Diagnostic steps for brake control systems and vehicle stability control functions are also included, along with inspection specifications and component testing guidelines.
Steering & Power Assist Systems
Service information for the steering column, steering gear, linkage assemblies, and power steering system components. Includes inspection procedures, torque specifications, and component replacement steps for accurate steering system repair.
Suspension, Alignment & Tire Systems
Front and rear suspension service procedures including control arms, springs, dampers, bushings, and stabilizer components. Alignment inspection and adjustment procedures are detailed along with tire and wheel service information and tire pressure monitoring system (TPMS) diagnostics.
Electrical System & Power Distribution
Comprehensive electrical diagnostics covering the starting system, charging system, power source and ground distribution, ECU communication networks, and system inspection procedures. Troubleshooting charts help trace faults in electronic control systems used throughout the vehicle.
Audio, Navigation & Telematics Systems
Service and diagnostic procedures for factory-installed audio components, navigation systems, multi-information displays, cellular communication modules, garage door opener integration, and park assist or monitoring systems.
Exterior Body & Lighting Systems
Panel removal and installation procedures for doors, rear hatch assemblies, mirrors, exterior trim, sliding roof components, and lighting systems. Also includes service steps for horn circuits, glass components, and windshield wiper and washer systems.
Interior Components & Climate Control
Heating and air conditioning system diagnostics, interior trim panel removal, instrument cluster service, interior lighting components, power outlets, mirror assemblies, and seat system inspection procedures.
Safety & Security Systems
Factory procedures for seat belt systems, supplemental restraint system (SRS airbag) components, theft deterrent system diagnostics, and keyless entry system troubleshooting.
Why Choose This 2016-2019 Toyota 4Runner OEM Service Manual?
This is the same factory workshop documentation used by Toyota technicians when diagnosing and repairing the 5th-gen 4Runner. It provides accurate specifications, structured troubleshooting procedures, and step-by-step service instructions across every major system.
For professional mechanics, it delivers the technical depth needed for drivetrain overhauls, electrical diagnostics, and advanced repairs. For experienced DIY owners, it serves as a reliable reference when performing maintenance or tackling larger service jobs at home.
Format & Compatibility
Supplied as a fully searchable digital PDF. The file can be viewed on Windows, macOS, Linux, iOS, and Android devices. You can use it in the shop on a laptop or tablet, or print individual sections for bench reference.
Download the 2016-2019 Toyota 4Runner OEM Service & Repair Manual
If you’re maintaining or repairing a 5th-generation Toyota 4Runner with the 1GR-FE V6, this workshop manual provides the factory service information required for proper diagnostics, maintenance, and component repair.
Language: English
Compatibility: Windows, macOS, Linux, iOS, Android
Requirements: PDF Reader (e.g., Adobe Reader)
