Chevrolet Captiva Service & Repair Manual: Antilock Brake System Diagnosis & Testing

Chevrolet Captiva Service & Repair Manual / Brakes / Antilock Brake System Diagnosis & Testing

1.	Verify that following areas function as designed:

Battery is fully charged and cables are clean and tight.

Fuses are not open.

Ground circuits for area of customer concern are clean, tight, and in correct location.

All connections/connectors for area of concern are fully seated.

There are no aftermarket devices that affect operation of system.

A suitably programmed scan tool powers up.

2.	Understand and validate customer concern. Inspect visible system components for obvious damage or conditions that may cause concern.

3.	Verify symptom is not exclusively a mechanical concern. If symptom is exclusively a mechanical concern, diagnose and repair as required.

4.	Verify vehicle powers up with ignition "ON". If vehicle does not power up, diagnose and repair as required.

5.	Perform vehicle DTC Information function using a suitably programmed scan tool. Verify at least one control module communicates with scan tool. Record any control module that is not communicating, any DTC, including symptom byte, and control module that has set DTC.

6.	Verify there are no current control module Internal Hardware Performance DTCs set. If any DTC of this type is set, diagnose and repair as required.

7.	Verify vehicle is built with any control module listed as not communicating.

8.	Verify there are no current control module Power Mode or Communication DTCs set If any DTC of this type is set, diagnose and repair as required.

9.	With driver door open, observe scan tool Power Mode parameter while cycling ignition switch through all power modes. Verify current Power Mode parameter matches actual ignition switch positions.

10.	Verify that engine cranks and runs.

11.	Verify there are no other DTCs set. If other DTCs are set, diagnose them in order as follows:

Voltage DTCs.

Programming, Setup, Configuration or Software Performance DTCs.

Component related DTCs.

System related DTCs.

Any remaining DTCs.

12.	Verify customer concern is not related to inspection/maintenance testing if inspection and maintenance testing has been performed.

13.	Diagnose any remaining customer concern.

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