2008-2009 Saturn Astra Service & Repair Manual
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2008 Saturn Astra | Astra (VIN A) Service Manual | Brakes | Antilock Brake System | Specifications |
Document ID: 2038213
Fastener Tightening Specifications
Application
Specification
Metric English
Battery Bracket Bolts 15 N·m 11 lb ft
Battery Ground Connection Nut 5 N·m 44 lb in
Battery Holder Bolts 7 N·m 62 lb in
Battery Positive Connection Nut 5 N·m 44 lb in
Battery Support Bolts 10 N·m 89 lb in
Hydraulic Line Retaining Bolt 14 N·m 10 lb ft
Hydraulic Modulator Bolts 8 N·m 71 lb in
Hydraulic Modulator Bracket Bolts 20 N·m 15 lb ft
Yaw Rate/Acceleration Sensor Nuts 10 N·m 89 lb in
© 2010 General Motors Corporation. All rights reserved.
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2008 Saturn Astra | Astra (VIN A) Service Manual | Brakes | Antilock Brake System | Specifications |
Document ID: 2003668
ABS Control Unit General Repair Specification
Important General Information
Important: The ABS control unit may not be separated from the hydraulic modulator in
vehicles with hill start assistance (HSA). If there is a fault, the complete hydraulic modulator
unit with ABS control unit must always be replaced.
• Before replacing the ABS control unit, Tech 2 must be used for determining whether the fault
can be allocated unambiguously to the ABS control unit.
• The ABS control unit may not be used again after suffering mechanical impact loading
(collision, impact).
• When replacing the ABS control unit, take particular care with regard to absolute cleanliness.
Only lint-free cloths may be used. After removal, the outside of the hydraulic modulator must
be cleaned with cleaning agent which does not contain mineral oil.
• The connections on the hydraulic modulator must be sealed immediately with suitable plugs
after detaching the brake lines.
• When the ABS control unit has been removed, care must be taken that no liquids can run
into the plug and into the inside of the ABS control unit.
• Never work with compressed air in the area of the hydraulic modulator with the brake system
open.
• The electronic printed circuit board is exposed when the ABS control unit has been detached.
The electrical contact surfaces in the ABS control unit must not be touched with the hand or
with other objects.
• No moisture or dirt particles may penetrate into the inside of the ABS control unit.
• Ensure that the ABS MK70 has all the seal rings complete. Missing seal rings lead to a short
circuit caused by moisture penetration.
© 2010 General Motors Corporation. All rights reserved.
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2008 Saturn Astra | Astra (VIN A) Service Manual | Brakes | Antilock Brake System | Repair Instructions |
Document ID: 1999456
Antilock Brake System Automated Bleed Procedure
1. For vehicles equipped with MK60/MK70, bleed the brake system. Refer to Hydraulic Brake
System Bleeding .
2. For vehicles equipped with MK60/MK70, apply the parking brake.
3. For vehicles equipped with MK60/MK70, connect the Tech 2 and switch on:
4. For vehicles equipped with MK60/MK70, follow the instructions of the Tech 2.
5. Disconnect the Tech 2.
Important: Repeat bleeding brake system if brake pedal is not hard.
6. For vehicles equipped with MK60/MK70, bleed the brake system. Refer to Hydraulic Brake
System Bleeding .
• Select menu "Vehicle Diagnoses"
• Select model year
• Select vehicle "Astra"
• Select "Chassis" system
• Select "MK70 / ABS MK60 ESP"
• Switch on ignition and confirm by pressing the button
• Select "Additional Functions"
• Follow further instructions of Tech 2
© 2010 General Motors Corporation. All rights reserved.
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2008 Saturn Astra | Astra (VIN A) Service Manual | Brakes | Antilock Brake System | Repair Instructions |
Document ID: 1989940
Electronic Brake Control Module Replacement (MK70)
Removal Procedure
Important: It is essential to comply with the instruction for the hydraulic modulator and the
electronic brake control module (EBCM). Refer to ABS Control Unit General Repair
Specification .
1. Remove the hydraulic modulator with the EBCM. Refer to Brake Pressure Modulator Valve
Replacement .
2. Remove the EBCM from the modulator.
2.1. Remove the 3 bolts (1).
2.2. Remove the EBCM from the hydraulic modulator without tilting it.
© 2010 General Motors Corporation. All rights reserved.
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3. Remove the 8 seal rings (1) carefully by hand.
Installation Procedure
1. Push the 8 new seal rings (1, 2) carefully on the valves.
Notice: Refer to Fastener Notice in the Preface section.
2. Install the new EBCM to hydraulic modulator.
Tighten
Tighten the hydraulic modulator bolts to 2 N·m (18 lb in).
3. Install the hydraulic modulator with EBCM. Refer to Brake Pressure Modulator Valve
Replacement .
4. For programming procedures, refer to Control Module References .
2.1. Push the EBCM onto the hydraulic modulator carefully without tilting it.
2.2. Attach 3 new bolts.
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Thank you for considering this comprehensive Service Repair Workshop Manual for the 2008-2009 Saturn Astra.
This manual is an invaluable resource for both professional mechanics and DIY enthusiasts, covering every service and repair procedure with clear, step-by-step instructions and detailed illustrations.
By utilizing this manual, you can save a substantial amount of money by performing your own repairs. It gives you the flexibility to print specific pages, chapters, or the entire manual, and it can also be easily accessed on your tablet or smartphone.
Models Covered:
- All Models
- All Engines
- All Trim Types
- All Transmission Types
Contents:
- Comprehensive coverage of all repair procedures from A-Z
- Inclusive of every repair and service procedure
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