Diagnostic procedure

DTC P0703 - DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA HAS BEEN RECORDED Has FREEZE FRAME DATA been recorded?	Yes	Go to the next step.
1		No	Record FREEZE FRAME DATA on repair order, then go to the next step.
2	VERIFY RELATED REPAIR INFORMATION AVAILABILITY Check for related Service Bulletins availability. Is any related repair information available?	Yes	Perform repair or diagnosis according to the available repair information. If the vehicle is not repaired, go to the next step.
2		No	Go to the next step.
3	INSPECT BRAKE SWITCH SIGNAL CIRCUIT FOR SHORT TO POWER Measure voltage between brake switch connector terminal B and body ground. Is voltage B+ ?	Yes	Repair or replace harness for short to power, then go to Step 9.
3		No	Go to Next step.
4	INSPECT BRAKE SWITCH CONNECTOR FOR POOR CONNECTION Turn ignition switch to OFF. Disconnect brake switch connector. Check for poor connection (damaged/pulled-out terminals, corrosion, etc.). Is there malfunction?	Yes	Repair or replace the terminal, then go to Step 9.
4		No	Go to the next step.
5	INSPECT BRAKE SWITCH POWER CIRCUIT FOR OPEN CIRCUIT Measure voltage between brake switch connector terminal A and body ground. Is voltage B+?	Yes	Go to the next step.
5		No	Repair or replace brake switch power circuit for open, then Go to Step 9.
6	INSPECT PCM CONNECTOR FOR POOR CONNECTION Turn ignition switch to OFF. Disconnect PCM connector. Check for poor connection (damaged/pulled-out terminals, corrosion, etc.). Is there any malfunction?	Yes	Repair terminal, then go to Step 9.
6		No	Go to the next step.
7	INSPECT BRAKE SWITCH SIGNAL CIRCUIT FOR OPEN CIRCUIT Connect breakout box with PCM connector disconnected. Connect brake switch connector. Turn ignition switch to ON (engine OFF). Depress brake pedal and measure voltage between breakout box terminal 82 and body ground. Is voltage B+?	Yes	Go to the next step.
7		No	Repair or replace harness for open, then go to Step 9.
8	INSPECT BRAKE SWITCH Perform brake switch inspection. (See BRAKE SWITCH INSPECTION .) Is brake switch okay?	Yes	Go to the next step.
8		No	Replace brake switch, then go to the next step.
9	VERIFY TROUBLESHOOTING OF DTC P0703 COMPLETED Make sure to reconnect all disconnected connectors. Clear the DTC from the memory using the WDS or equivalent. Drive vehicle 30 km/h {18.6 mph} or more. Depress and release brake pedal more than 10 times while driving vehicle. Is PENDING CODE for this DTC present?	Yes	Replace PCM, then go to the next step.
9		No	Go to the next step.
10	VERIFY AFTER REPAIR PROCEDURE Perform the "After Repair Procedure". (See AFTER REPAIR PROCEDURE .) Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE .)
10		No	Troubleshooting completed.