C1008

C1008-BRAKE FLUID LEVEL CIRCUIT HIGH





For a complete wiring diagram REFER to DIAGRAMS/ELECTRICAL .


- When Monitored:
With the ignition on.

- Set Condition:
When the TIPM indicates that the Brake Fluid Level Circuit is greater than 4.9 volts for more then 5 seconds.






Diagnostic Test


1. BRAKE FLUID LEVEL SWITCH SIGNAL VOLTAGE ABOVE 4.9 VOLTS
NOTE: This DTC must be active for the results of this test to be valid.

Turn the ignition on.
With the scan tool, read Brake Fluid Level Switch Signal voltage.
Is the voltage above 4.9 volts?

Yes


- Go To 2


No


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


2. (B20) BRAKE FLUID LEVEL SWITCH SIGNAL CIRCUIT FOR SHORT TO BATTERY VOLTAGE




Turn the ignition off.
Disconnect the Brake Fluid Level Switch harness connector.
Turn the ignition on.
Measure the voltage of the (B20) Brake Fluid Level signal circuit in the Brake Fluid Level Switch harness connector to ground.
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.ABS Verification Test


No


- Go To 3


3. BRAKE FLUID LEVEL SWITCH INTERNAL FAILURE




Turn the ignition off.
Connect a jumper wire between the (B20) Brake Fluid Level signal circuit and the (P37) Brake Fluid Level Switch Return circuit in the Brake Fluid Level Switch harness connector
Turn the ignition on.
With the scan tool, read the Brake Fluid Level Switch voltage
Is the voltage below 1.0 volt?

Yes


- Go To4


No


- Go To5


4. BRAKE SWITCH RESISTANCE
Turn the ignition off.
Measure the resistance of the Brake Fluid Level Switch.
Is the resistance between 9000-11000 ohms?

Yes



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


No


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


5. (B20) BRAKE FLUID LEVEL SWITCH CIRCUIT OPEN




Turn the ignition off.
Disconnect the TIPM harness connector.
Measure the resistance of the (B20) Brake Fluid Level signal circuit between the Brake Fluid Level Switch harness connector and the TIPM harness connector.
Is the resistance below 5 ohms?

Yes


- Go To6


No


- Repair the open in the (B20) Brake Fluid Level Switch signal circuit.
- Perform ABS VERIFICATION TEST.ABS Verification Test


6. (P37) SWITCH RETURN CIRCUIT OPEN




Reconnect the TIPM harness connector.
Measure the resistance of the (P37) Brake Fluid Level Switch return circuit between the Brake Fluid Level Switch harness connector and ground.
Is the resistance below 5.0 ohms?

Yes


- Replace the TIPM.
- Perform ABS VERIFICATION TEST.ABS Verification Test


No


- Repair the open in the (P37) Switch Return circuit.
- Perform ABS VERIFICATION TEST.ABS Verification Test