C1232

C1232-DRIVE TEST: PRESSURE SENSOR

For a complete wiring diagram Refer to Diagrams/Electrical. Electrical Diagrams.


- When Monitored:

During the Drive Test.

- Set Condition:

If the Pressure Sensor fails to indicate a high enough pressure.








Diagnostic Test


1. CHECK FOR A DTC C1232-DRIVE TEST: PRESSURE SENSOR

NOTE: This DTC must be active for the results of this test to be valid. If any other Pressure Sensor DTCs are present they must be repaired before continuing.

Turn the ignition on.

With the scan tool, read and record DTCs.

With the scan tool, read and record Freeze Frame information.

Start the engine.

Perform ECU initialization with drive test on ABM. Refer to ABS VERIFICATION TEST. ABS Verification Test


NOTE: Apply brakes firmly when performing the drive test.

With the scan tool, read and record DTCs.

Does the scan tool display: C1232-DRIVE TEST: PRESSURE SENSOR?

Yes

- Go To 2

No

- Refer to the INTERMITTENT CONDITION diagnostic procedure. ABS Intermittent Condition Test.
- ABS-INTERMITTENT CONDITION TEST. ABS Intermittent Condition Test



2. CHECK BRAKE PRESSURE SENSOR

With the scan tool look at Pressure Sensor Signal.

Engine running and no brake applied pressure should read less then 15 bar (218 psi). With moderate brake apply pressure should be above 15 bar (218 psi.)

Were any problems found?

Yes

- Replace the Integrated Control Unit.
- Perform ABS VERIFICATION TEST. ABS Verification Test

No

- Go To 3



3. CHECK HYDRAULIC SYSTEM & BRAKE SYSTEM COMPONENT INSTALLATION & FUNCTION

Verify that the Anti-Lock Brakes Module and Hydraulic Control Unit are properly installed.

Verify that the hydraulic system is properly filled and bled.

Verify that the brake system components are installed and functioning properly.

Were any problems found?

Yes

- Repair as necessary.
- Perform ABS VERIFICATION TEST. ABS Verification Test

No

- Replace the Integrated Control Unit.
- Perform ABS VERIFICATION TEST. ABS Verification Test