C1000

C1000-BRAKE PEDAL SWITCH 1 CIRCUIT PERFORMANCE





For a complete wiring diagram, refer to the wiring information Electrical Diagrams.

- Theory of Operation
The Totally Integrated Power Module (TIPM) monitors the (L53) Stop Lamp Switch Output circuit or three minutes once the set conditions have been met. If the Stop Lamp Switch Output is still active, the stop lamps are disabled, and code C1000 is set. The stop lamps are reactivated when the request is present during the next key cycle.

- When Monitored:
Ignition Switch OFF.

All Doors Closed.

CAN B and C are Ready to go to sleep.

When Set:
When the set conditions have been met and the brake switch input has been active for more than 3 consecutive minutes.






1. ACTIVE DTC

NOTE: If any Engine Brake DTCs are present they must be repaired before continuing.

NOTE: Make sure the Stop Lamp Switch is properly adjusted before continuing.

1. Ignition on, engine not running.
2. With a scan tool, select View DTCs.

Is the DTC Active at this time?

Yes

- Go To 2

No

- Perform the ABS INTERMITTENT CONDITION diagnostic procedure. ABS Intermittent Condition Test.

2. STOP LAMP SWITCH




1. Turn the ignition off.
2. Disconnect the Stop Lamp Switch.
3. Measure the resistance between the (A924) Fused B+ terminal and the (L53) Stop Lamp Switch Output terminal in the Stop Lamp Switch.
4. Apply and release the brake pedal while monitoring the ohmmeter.

Does the resistance change from below 5.0 Ohms to an open circuit?

Yes

- Go To 3

No

- Replace the Stop Lamp Switch.
- Perform the Body Verification Test. Body Verification Test.

3. (L53) STOP LAMP SWITCH OUTPUT CIRCUIT




1. Reconnect the Stop Lamp Switch.
2. Disconnect the Totally Integrated Power Module (TIPM) harness connector.
3. Turn the ignition on.
4. Using a 12-volt test light connected to ground, check the (L53) Stop Lamp Switch Output circuit in the Totally Integrated Power Module (TIPM) harness connector while pressing and releasing the brake pedal several times.

Does the test light change from illuminated when the pedal is pressed to not illuminated when the pedal is released?

Yes

- Replace and program the Totally Integrated Power Module (TIPM).
- Perform the Body Verification Test. Body Verification Test.

No

- Repair the (L53) Stop Lamp Switch Output circuit for a short to voltage.
- Perform the Body Verification Test. Body Verification Test.