Diagnostic procedure

WARNING: This page is about a different variant/trim than selected.

DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	Does engine idle roughly?	Yes	Go to symptom troubleshooting "NO. 8 ENGINE RUNS ROUGH/ROLLING IDLE ".
1	Does engine idle roughly?	No	Go to the next step.
2	Turn off A/C switch and fan switch. Does A/C magnetic clutch engage?	Yes	Go to symptom troubleshooting "NO. 24 A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY ."
2		No	Go to the next step.
3	Verify the following: Proper routing of and no damage to vacuum lines No air leakage from intake-air system Are all items normal?	Yes	Go to the next step.
3		No	Service if necessary. Repeat Step 3.
4	Connect WDS or equivalent to DLC-2. Turn ignition switch to ON (Engine off). Retrieve any DTCs. Are there any DTCs displayed?	Yes	DTC is displayed: Go to appropriate DTC test.
4		No	No DTC is displayed: Go to the next step.
5	Perform electronic throttle control system operation inspection. (See ELECTRONIC THROTTLE CONTROL SYSTEM INSPECTION ). Does electronic throttle control system work properly?	Yes	Go to the next step.
5		No	Repair or replace malfunctioning part according to electronic throttle control system operation inspection results.
6	Disconnect vacuum hose between purge solenoid valve and intake manifold from purge solenoid valve side. Plug opening end of vacuum hose. Drive vehicle. Does engine condition improve?	Yes	Inspect EVAP control system.
6		No	Go to the next step.
7	Connect WDS or equivalent to DLC-2. Access the following PCM and TCM (ATX) PIDs. PCM PIDs: APP1 APP2 BOO CPP (MTX) CPP/PNP (MTX) TP_REL MAF VSS TCM PID: TR VSS Drive the vehicle with monitoring PIDs. Are the PID values within specified?	Yes	Go to the next step.
7		No	If the APP1 or APP2 PID is not specified: Inspect accelerator position sensor. If the BOO PID is not specified: Inspect brake switch. If the CPP PID is not specified: Inspect clutch switch. If the CPP/PNP PID is not specified: Inspect neutral switch. If the TP_REL PID is not specified: Inspect TP sensor. If the MAF PID is not specified: Inspect MAF sensor. If the VSS PID for PCM is not specified: Inspect VSS sensor. (MTX without ABS) Inspect ABS wheel speed sensors, (except for MTX without ABS) If the TR PID is not specified: Inspect TR switch. If the VSS PID for TCM is not specified: Inspect VSS sensor.
8	Verify test results. If okay, return to diagnostic index to service any additional symptoms. If malfunction remains, inspect related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. If vehicle is repaired, troubleshooting completed. If vehicle is not repaired or additional diagnostic information is not available, reprogram PCM if later calibration is available. Retest.