2004 MITSUBISHI Outlander All Models Service and Repair MANU

35B-1 GROUP 35B ANTI-SKID BRAKING SYSTEM (ABS) CONTENTS GENERAL INFORMATION . . . . . . . . 35B-2 SERVICE SPECIFICATIONS . . . . . . . 35B-3 SPECIAL TOOLS . . . . . . . . . . . . . . . . 35B-4 TROUBLESHOOTING . . . . . . . . . . . . 35B-5 STANDARD FLOW OF DIAGNOSTIC TROUBLESHOOTING . . . . . . . . . . . . . . . . 35B-5 NOTES WITH REGARD TO DIAGNOSIS . 35B-5 ABS WARNING LAMP INSPECTION. . . . . 35B-6 DIAGNOSIS FUNCTION. . . . . . . . . . . . . . . 35B-6 INSPECTION CHART FOR DIAGNOSIS CODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35B-8 DIAGNOSTIC TROUBLE CODE PROCEDURES. . . . . . . . . . . . . . . . . . . . . . 35B-9 INSPECTION CHART FOR TROUBLE SYMPTOMS . . . . . . . . . . . . . . . . . . . . . . . . 35B-39 INSPECTION PROCEDURE FOR TROUBLE SYMPTOMS . . . . . . . . . . . . . . . . . . . . . . . . 35B-40 DATA LIST REFERENCE TABLE . . . . . . . 35B-53 ACTUATOR TEST REFERENCE TABLE. . 35B-53 CHECK AT ABS-ECU . . . . . . . . . . . . . . . . . 35B-54 ON-VEHICLE SERVICE . . . . . . . . . . . 35B-56 ABS SENSOR OUTPUT VOLTAGE MEASUREMENT. . . . . . . . . . . . . . . . . . . . . 35B-56 HYDRAULIC UNIT CHECK . . . . . . . . . . . . . 35B-57 IN THE EVENT OF A DISCHARGED BATTERY . . . . . . . . . . . . . . . . . . . . . . . . . . 35B-60 HYDRAULIC UNIT . . . . . . . . . . . . . . . 35B-61 REMOVAL AND INSTALLATION . . . . . . . . 35B-61 ABS SENSOR . . . . . . . . . . . . . . . . . . . 35B-64 REMOVAL AND INSTALLATION . . . . . . . . 35B-64 INSPECTION. . . . . . . . . . . . . . . . . . . . . . . . 35B-65 G-SENSOR . . . . . . . . . . . . . . . . . . . . . 35B-66 REMOVAL AND INSTALLATION . . . . . . . . 35B-66 INSPECTION. . . . . . . . . . . . . . . . . . . . . . . . 35B-66

GENERAL INFORMATION ANTI-SKID BRAKING SYSTEM (ABS) 35B-2 GENERAL INFORMATION M1352000100410 FEATURES The 4ABS ensures directional stability and controlla- bility during hard braking. This ABS uses a 4-sensor 3-channel system that controls the right and left front wheels independently of each other and controls the rear wheels simultane- ously (select low control * ). The basic system is the same as that of former COLT/LANCER. 4WD models are equipped with G-sensor. NOTE: * Select low control: Control system that com- pares the speeds of the right and left wheels and per- forms the same fluid pressure control on both wheels according to the speed of the wheel that is likely to be locked. The system has the following features:  EBD (Electronic Brake-force Distribution system) control has been added to provide the ideal braking force for the rear wheels.  Fail-safe function which ensures that safety is maintained  Diagnostic function which provides improved serviceability EBD CONTROL In ABS, electronic control is used so the rear wheel brake hydraulic pressure during braking is regulated by rear wheel control solenoid valves in accordance with the vehicle's rate of deceleration, and the front and rear wheel slippage which are calculated from the signals received from the various ABS sensors. EBD control is a control system which provides a high level of control for both vehicle braking force and vehicle stability. The system has the following features:  Because the system provides the optimum rear wheel braking force regardless of vehicle load conditions and the condition of the road surface, the system reduces the required pedal depres- sion force, particularly when the vehicle is heavily loaded or driven on road surfaces with high fric- tional coefficients.  Because the duty placed on the front brakes is reduced, the increases in pad temperature can be controlled during front brakes application to improve the wear resistance characteristics of the pad.  Control valves such as the proportioning valve are no required. SPECIFICATIONS Item Specification ABS control method 4-sensor, 3-channel Number of ABS rotor teeth Front 43 Rear 43 ABS sensor Type Magnet coil type Maximum gap between sensor and rotor mm <Non-adjustable> 0.85 <Front> 0.89 <Rear (2WD)> 0.96 <Rear (4WD)>

SERVICE SPECIFICATIONS ANTI-SKID BRAKING SYSTEM (ABS) 35B-3 CONSTRUCTION DIAGRAM AC301089 AC ABS warning lamp Hydraulic unit and ABS-ECU Diagnosis connector G-sensor <4WD> Stop lamp switch ABS sensor (front) ABS rotor (front) ABS sensor (rear) ABS rotor (rear) SERVICE SPECIFICATIONS M1352000300544 Item Standard value ABS sensor internal resistance k: 1.24  1.64 G-sensor output voltage <4WD> V Stationary vehicles 2.4  2.6 Arrow facing downward 1.0  4.0

SPECIAL TOOLS ANTI-SKID BRAKING SYSTEM (ABS) 35B-4 SPECIAL TOOLS M1352000600761 Tool Number Name Use B991502 MB991502 MUT-II sub assembly Checking the ABS (Diagnosis display using the MUT-II) MB991910 MB991826 MB991955 MB991911 MB991824 MB991827 MB991825 A B C D E F DO NOT USE MB991955 A: MB991824 B: MB991827 C: MB991910 D: MB991911 E: MB991825 F: MB991826 MUT-III sub-assembly A: Vehicle Communication Interface (V. C. I.) B: MUT-III USB cable C: MUT-III main harness A (Vehicles with CAN communication system) D: MUT-III main harness B (Vehicles without CAN communication system) E: MUT-III measurement adapter F: MUT-III trigger harness Checking the ABS (Diagnosis display using the MUT-III) CAUTION MUT-III main harness B (MB991911) should be used. MUT-III main harness A should not be used for this vehicle. MB991529 MB991529 Diagnosis code check harness Checking the ABS (Diagnosis display using the ABS warning lamp)

MB991348 TROUBLESHOOTING ANTI-SKID BRAKING SYSTEM (ABS) 35B-5 TROUBLESHOOTING STANDARD FLOW OF DIAGNOSTIC TROUBLESHOOTING M1352011100511 Refer to GROUP 00, How to Use Troubleshoot- ing/Inspection Service Points P.00-6. NOTES WITH REGARD TO DIAGNOSIS M1352012600177 1. The ABS is a system which controls the brake pressure by means of the operation of the ECU. Accordingly, the following symptoms may occur at times, but these are a sign of normal ABS operation, and do not indicate a malfunction. Phenomenon Explanation of phenomenon When the engine starts, a knocking sound can be heard coming from the engine compartment. This sound occurs as a result of system operation checking, and is not a malfunction.  Sound of the motor inside the ABS hydraulic unit operation. (whine)  Sound is the generated along with vibration of the brake pedal. (scraping)  When ABS operates, sound is generated from the vehicle chassis due to repeated brake application and release. (Thump: suspension; squeak: tyres) This is the sound of normal system operation, and is not a malfunction. Shocks are felt if the brake pedal is depressed when driving at low speed. This is due to system operation checking (starting-of check when the vehicle speed reaches a certain number of km/h) and is not a malfunction. 2. For road surfaces such as snow-covered roads and gravel roads, the braking distance for vehicles with ABS can sometimes be longer than that for other vehicles. Accordingly, advise the customer to drive safely on such roads by lowering the vehicle speed and not being too overconfident. 3. Diagnosis detection condition can vary depending on the diagnosis code. Make sure that checking requirements listed in the "Comment" are satisfied when checking the trouble symptom again. MB991348 Test harness set Checking the G-sensor <4WD> Tool Number Name Use

You're Reading a Preview

2004 MITSUBISHI Outlander All Models Service and Repair MANU

Description

Reviews

Q&A

Recently Viewed