Diagnostic Procedure

DTC P0506 DIAGNOSTIC PROCEDURE TABLE

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 the FREEZE FRAME DATA on the repair order, then go to the next step.
2	VERIFY RELATED REPAIR INFORMATION AVAILABILITY Verify related Service Bulletins and/or on-line 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 RELATED PENDING OR STORED DTCS Turn the ignition switch off, then to the ON position (Engine off). Verify PENDING CODE or stored DTCs using the WDS or equivalent. Are other DTCs present?	Yes	Repair the applicable DTCs. (See DTC TABLE .)
3		No	Go to the next step.
4	INSPECT A/C MAGNET CLUTCH OPERATION Turn the fan switch off. Is the magnet clutch still on?	Yes	Refer to "NO.24 A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY ." of ENGINE SYMPTOM TROUBLESHOOTING, then go to Step 9.
4		No	Go to the next step.
5	INSPECT PURGE SOLENOID VALVE MALFUNCTION Inspect the purge solenoid valve. (See PURGE SOLENOID VALVE INSPECTION .) Is purge solenoid valve normal?	Yes	Go to the next step.
5		No	Replace the purge solenoid valve, then go to Step 9. (See PURGE SOLENOID VALVE REMOVAL/INSTALLATION .)
6	INSPECT AIR CLEANER ELEMENT Remove the air cleaner element with the engine running. Is the engine speed increased?	Yes	Replace the air cleaner element, then go to Step 9. (See INTAKE AIR SYSTEM REMOVAL/INSTALLATION .)
6		No	Go to the next step.
7	INSPECT ENGINE COMPRESSION Inspect the engine compression. (See COMPRESSION INSPECTION .) Is the engine compression normal?	Yes	Go to the next step.
7		No	Overhaul the engine, then go to Step 9.
8	INSPECT GENERATOR Inspect the generator. (See GENERATOR INSPECTION [LF] .) Is the generator normal?	Yes	Go to the next step.
8		No	Repair or replace the related part, then go to the next step.
9	VERIFY TROUBLESHOOTING OF DTC P0506 COMPLETED Make sure to reconnect all disconnected connectors. Start the engine. Clear the DTC from the PCM memory using the WDS or equivalent. Depress the brake pedal for 14 s or more. Is the PENDING CODE for this DTC present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION .)
9		No	Go to the next step.
10	VERIFY AFTER REPAIR PROCEDURE Perform "AFTER REPAIR PROCEDURE". (See AFTER REPAIR PROCEDURE .) Is any DTC present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE .)
10		No	Troubleshooting completed.