C1008-BRAKE FLUID LEVEL CIRCUIT HIGH
For a complete wiring diagram Refer to Section 8W.
- When Monitored:
With the ignition on.
- Set Condition:
When the Totally Integrated Power Module indicates that the Brake Fluid Level Circuit is greater than 4.9 volts for more than 5 seconds.
| Possible Causes |
| (B20) BRAKE FLUID LEVEL SWITCH SIGNAL CIRCUIT OPEN |
| (B20) BRAKE FLUID LEVEL SWITCH SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE |
| BRAKE FLUID LEVEL SWITCH INTERNAL FAILURE |
| (Z925) SENSOR GROUND CIRCUIT OPEN |
| TOTALLY INTEGRATED POWER MODULE |
Diagnostic Test
1.BRAKE FLUID LEVEL SWITCH SIGNAL VOLTAGE ABOVE 4.9 VOLTSNOTE: This DTC must be active for the results of this test to be valid.
Is the voltage above 4.9 volts?
Yes
- Go To 2
No
- Refer to the INTERMITTENT CONDITION diagnostic procedure.
- Refer to the ABS-INTERMITTENT CONDITION TEST. (Refer to 5 - BRAKES - DIAGNOSIS AND TESTING)
2. (B20) BRAKE FLUID LEVEL SWITCH SIGNAL CIRCUIT FOR SHORT TO BATTERY VOLTAGE
Is the voltage above 5.2 volts?
Yes
- Repair the (B20) Brake Fluid Level signal circuit for a short to voltage.
- Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).
No
- Go To 3
3.BRAKE FLUID LEVEL SWITCH INTERNAL FAILURE
Is the voltage below 1.0 volt?
Yes
- Replace the Brake Fluid Level Switch in accordance with the Service Information.
- Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).
No
- Go To4
4.
Is the resistance below 5 ohms?
Yes
- Go To5
No
- Repair the open in the (B20) Brake Fluid Level Switch signal circuit.
- Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).
5.
Is the resistance below 5.0 ohms?
Yes
- Replace and program the Totally Integrated Power Module in accordance with the Service Information.
- Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).
No
- Repair the open in the (Z925) Sensor ground circuit .
- Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).