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Diagnostic Procedure

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DIAGNOSTIC PROCEDURE - BRAKE FLUID SWITCH CIRCUIT OPEN

TEST ACTION APPLICABILITY
1
NOTE: Ensure that the Brake Fluid Level Switch harness connector is properly connected.
With the DRBIII®, erase DTCs.Cycle the ignition and wait approximately 15 seconds.With the DRBIII®, read DTCs.Does the DRBIII® display BRAKE FLUID SWITCH CIRCUIT OPEN?Yes --> Go To 2No --> The condition is not present at this time. Monitor DRBIII® parameters while wiggling the related wire harness. Refer to any Technical Service Bulletins that may apply. Visually inspect the related wiring harness and connectors.Perform BODY VERIFICATION TEST - VER 1  .		 All
2 Turn the ignition off.
Disconnect the Brake Fluid Level Switch harness connector.
Check connectors - Clean/repair as necessary.
Measure the internal resistance of the Brake Fluid Level (Red Brake Warning Indicator Driver) Switch.
Is the resistance above 1.1k (1,100) ohms?
Yes --> Replace the Brake Fluid Level (Red Brake Warning Indicator Driver) Switch in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1  .
No --> Go To 3		 All
3 Turn the ignition off.
Disconnect the Brake Fluid Level Switch harness connector.
Check connectors - Clean/repair as necessary.
Measure the resistance between ground and the Brake Fluid Level Switch Ground circuit.
Is the resistance above 5.0 ohms?
Yes --> Repair the Brake Fluid Level (Red Brake Warning Indicator Driver) Switch Ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1  .
No --> Go To 4		 All
4 Turn the ignition off.
Disconnect the Brake Fluid Level Switch harness connector.
Disconnect the Instrument Cluster harness connector.
Measure the resistance of the Red Brake Warning Indicator Driver circuit.
Is the resistance above 5.0 ohms?
Yes --> Repair the Red Brake Warning Indicator Driver circuit for an open.
Perform BODY VERIFICATION TEST - VER 1  .
No --> Replace and configure the Instrument Cluster in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1  .		 All
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