Parking Brake - VIN Range: G00442->G45170

PINPOINT TEST G295394p2: DTC C1094, C1769, C1782, C1783; PARK BRAKE APPLY SWITCH CIRCUIT FAILURE/SHORT TO GROUND, PARK BRAKE RELEASE SWITCH CIRCUIT FAILURE/SHORT TO GROUND
G295394t3: CHECK THE SIGNAL GROUND TO THE EP13 SWITCH PACK
1. Measure the resistance between TI-82, pin 02 (13K) and GROUND.
^ Is the resistance greater than 5 ohms?
Yes: GO to Pinpoint Test G295394t4.
No: GO to Pinpoint Test G295394t5.

G295394t4: CHECK THE SIGNAL GROUND CIRCUIT TO THE EP13 SWITCH PACK FOR HIGH RESISTANCE
1. Disconnect the battery negative terminal.
2. Disconnect the EP13 control module electrical connector, CR32.
3. Measure the resistance between TI-82, pin 06 (WU) and CR32, pin 12 (WU).
^ Is the resistance greater than 5 ohms?
Yes: REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams. CLEAR the DTC. TEST the system for normal operation.
No: GO to Pinpoint Test G295394t5.

G295394t5: CHECK THE VOLTAGE FROM THE EP13 CONTROL MODULE TO THE SWITCH PACK
1. Reconnect the battery negative terminal.
2. Reconnect the EP13 control module electrical connector, CR32.
3. Turn the ignition switch to the ON position.
4. Measure the voltage between TI-82, pin 08 (WU) and GROUND.
5. Measure the voltage between TI-82, pin 04 (RW) and GROUND.
Is either voltage less than 3 volts?
Yes: GO to Pinpoint Test G295394t6.
No: Check the EP13 switch function. CLEAR the DTC. TEST the system for normal operation.

G295394t6: CHECK THE EP13 CONTROL MODULE TO SWITCH PACK CIRCUITS FOR HIGH RESISTANCE
1. Disconnect the battery negative terminal.
2. Disconnect the EP13 control module electrical connector, CR32.
3. Measure the resistance between TI-82, pin 08 (WU) and CR32, pin 05 (WU).
4. Measure the resistance between TI-82, pin 04 (RW) and CR32, pin 06 (RW).
^ Is either resistance greater than 5 ohms?
Yes: REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams. CLEAR the DTC. TEST the system for normal operation.
No: GO to Pinpoint Test G295394t7.

G295394t7: CHECK THE EP13 CONTROL MODULE TO SWITCH PACK CIRCUITS FOR SHORT TO GROUND
1. Reconnect the battery negative terminal.
2. Measure the resistance between TI-82, pin 08 (WU) and GROUND.
3. Measure the resistance between TI-82, pin 04 (RW) and GROUND.
^ Is either resistance less than 10,000 ohms?
Yes: REPAIR the short circuit.
No: Contact dealer technical support for advice on possible EP13 control module failure.