Diagnostic procedure

DTC P0123 - 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 and/or online repair information 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	VERIFY CURRENT INPUT SIGNAL STATUS - IS CONCERN INTERMITTENT OR CONSTANT Connect breakout box with PCM disconnected. Turn key to ON (Engine off). Check voltage at breakout box terminal 40 while gradually depressing accelerator pedal. Is voltage above 4.96 V?	Yes	Go to the next step.
3		No	Intermittent concern exists. Go to INTERMITTENT CONCERNS TROUBLESHOOTING procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING .)
4	CHECK TP SENSOR CONNECTOR Turn the ignition switch off. Verify that the TP sensor connector is connected securely. Is connector okay?	Yes	Go to the next step.
4		No	Connect the connector securely, then go to Step 11.
5	INSPECT POOR CONNECTION OF TP SENSOR CONNECTOR Disconnect TP sensor connector. Check for poor connection (damaged, pulled-out terminals, corrosion, etc.). Is there any malfunction?	Yes	Repair or replace suspected terminal, then go to Step 11.
5		No	Go to the next step.
6	INSPECT TP SENSOR Perform TP sensor inspection. (See THROTTLE POSITION (TP) SENSOR INSPECTION ) Is TP sensor okay?	Yes	Go to the next step.
6		No	Replace TP sensor, then go to Step 11.
7	VERIFY TP SENSOR GROUND CIRCUIT FOR OPEN AT TP SENSOR CONNECTOR Check continuity between TP sensor terminal A (harness-side) and body ground. Is there continuity?	Yes	Go to step 10.
7		No	Go to the next step.
8	VERIFY TP SENSOR GROUND CIRCUIT FOR OPEN Check continuity between TP sensor connector terminal A and body ground. Is there continuity?	Yes	Repair or replace open circuit between TP sensor connector terminal A (harness-side) and PCM connector terminal 20 (harness-side). Then, go to Step 11.
8		No	Go to the next step.
9	CHECK PCM CONNECTOR Disconnect PCM connector. Check for poor connection (damaged, pulled-out terminals, corrosion, etc.). Is there any malfunction?	Yes	Repair terminal, then go to Step 11.
9		No	Go to Step 11.
10	VERIFY TP SIGNAL CIRCUIT FOR SHORT TO CONSTANT VOLTAGE CIRCUIT Check continuity between TP sensor connector terminals B and C. Is there continuity?	Yes	Repair or replace suspected harness, then go to the next step.
10		No	Go to the next step.
11	VERIFY TROUBLESHOOTING OF DTC P0123 COMPLETED Make sure to reconnect all disconnected connectors. Turn key to ON (Engine off). Clear the DTC from the PCM memory using the WDS or equivalent. Does the same DTC appear?	Yes	Replace PCM, then go to the next step.
11		No	Go to the next step.
12	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 .)
12		No	Troubleshooting completed.