C1002

C1002-BRAKE PEDAL SWITCH 1 CIRCUIT HIGH





For a complete wiring diagram Refer to Diagram/Electrical. Electrical Diagrams


- Theory of Operation

The TIPM monitors the (L53) Primary Brake Switch Signal Circuit (L53] Brake Lamp Switch Output Circuit) for three minutes once the set conditions have been met.

- When Monitored:

Ignition Switch OFF.


All Doors Closed.


CAN B and C are Ready to go to sleep.

When Set:

The TIPM monitors the L53 Brake Switch Signal Circuit once the set conditions have been met and the brake switch input has been active for more than 3 consecutive minutes.








Diagnostic Test


1. CHECK FOR DTC C1002-BRAKE PEDAL SWITCH 1 CIRCUIT HIGH

NOTE: This DTC must be active for the results of this test to be valid.

Turn the ignition on.

With the scan tool, record and erase DTCs.

Cycle the ignition switch from off to on.

With the scan tool, read DTCs.

Does the scan tool display: C1002-BRAKE PEDAL SWITCH 1 CIRCUIT HIGH?

Yes

- Go To 2

No

- The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires.
- Refer to the ABS-INTERMITTENT CONDITION TEST. ABS Intermittent Condition Test



2. CHECK (L53) PRIMARY BRAKE SWITCH SIGNAL CIRCUIT SHORTED TO VOLTAGE





Turn the ignition on.

Using a 12-volt test light connected to ground, back probe the (L53) Primary Brake Switch Circuit at the Stop Lamp Switch connector.

Does the test light illuminate brightly?

Yes

- Go To 3

No

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



3. STOP LAMP BRAKE PEDAL SWITCH SHORTED





Turn the ignition off.

Disconnect the Stop Lamp Switch harness connector.

Measure the resistance of the Stop Lamp Switch between (L53) Pin 2 and (A924) Pin 1.

Is there continuity?

Yes

- Replace the Stop Lamp Switch and then Go To 4

No

- Go To 5



4. CHECK (L53) PRIMARY BRAKE SWITCH SIGNAL CIRCUIT SHORTED TO VOLTAGE





Reconnect the Stop Lamp Switch connector.

Turn the ignition on.

Using a 12-volt test light connected to ground, back probe the (L53) Primary Brake Switch Circuit.

Does the test light illuminate?

YES

- Go To 5

NO

- Perform ABS VERIFICATION TEST. ABS Verification Test



5. CHECK TIPM BACK FEEDING VOLTAGE TO (L53) PRIMARY BRAKE SWITCH SIGNAL CIRCUIT





Turn the ignition off.

Disconnect the Totally Integrated Power Module (TIPM) harness connector.

Turn the ignition on.

Using a 12-volt test light connected to ground, test the (L53) Primary Brake Switch Circuit.

Does the test light illuminate?

YES

- Repair the short to voltage in the (L53) Primary Brake Switch Signal circuit.
- Perform ABS VERIFICATION TEST. ABS Verification Test

No

- Replace and program the Totally Integrated Power Module.
- Perform ABS VERIFICATION TEST. ABS Verification Test