C1008

C1008-BRAKE FLUID LEVEL CIRCUIT HIGH





For a complete wiring diagram, refer to the Wiring Information.

- When Monitored:
With the ignition on.

- Set Condition:
When the Totally Integrated Power Module (TIPM) detects the Brake Fluid Level Circuit voltage is greater than expected for more than five seconds.





1. CHECK FOR ACTIVE DIAGNOSTIC TROUBLE CODE (DTC)
1. Turn the ignition on.
2. With the scan tool, read the TIPM DTCs.

Does the scan tool display this DTC as active?

Yes

- Go To 2

No

- Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. CHECK THE (B20) BRAKE FLUID LEVEL SWITCH SENSE CIRCUIT FOR A SHORT TO VOLTAGE IN THE HARNESS




1. Turn the ignition off.
2. Disconnect the Brake Fluid Level Switch harness connector.
3. Disconnect the TIPM C7 harness connector.
4. Turn the ignition on.
5. Measure the voltage between ground and the (B20) Brake Fluid Level Switch Sense circuit.

Is there any voltage present?

Yes

- Repair the short to voltage in the (B20) Brake Fluid Level Switch Sense circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 3

3. CHECK THE (B20) BRAKE FLUID LEVEL SWITCH SENSE CIRCUIT FOR AN OPEN IN THE HARNESS




1. Turn the ignition off.
2. Measure the resistance of the (B20) Brake Fluid Level Switch Sense circuit between the Brake Fluid Level Switch harness connector and the TIPM C7 harness connector.

Is the resistance below 5.0 Ohms?

Yes

- Go To 4

No

- Repair the open in the (B20) Brake Fluid Level Switch Sense circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

4. CHECK THE (Z901) GROUND CIRCUIT FOR AN OPEN IN THE HARNESS




1. Using a 12-volt test light connected to 12-volts, check the (Z901) Ground circuit.

Does the test light illuminate brightly?

Yes

- Go To 5

No

- Repair the open in the (Z901) Ground circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

5. CHECK THE TIPM FOR CORRECT OPERATION




1. Connect a jumper wire between the (B20) Brake Fluid Level Switch Sense circuit and the (Z901) Ground circuit in the Brake Fluid Level Switch harness connector.
2. Turn the ignition on.
3. With the scan tool, read the Brake Fluid Level Voltage.

Is the voltage below 1.0 volt?

Yes

- Replace the Brake Fluid Level Switch.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Replace the TIPM. Totally Integrated Power Module (TIPM) - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.