Diagnostic procedure

DTC P2502 [L3] DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	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.
1		No	Go to the next step.
2	INSPECT BATTERY Turn the ignition switch off. Inspect the battery. Is the battery normal?	Yes	Go to the next step.
2		No	Replace the battery, then go to Step 7.
3	INSPECT GENERATOR Inspect the generator. (See GENERATOR INSPECTION [L3] .) Is the generator normal?	Yes	Go to the next step.
3		No	Replace the generator, then go to Step 7. (See GENERATOR REMOVAL/INSTALLATION [L3] .)
4	INSPECT POOR INSTALLATION OF GENERATOR TERMINAL Turn the ignition switch off. Inspect for looseness of generator terminal B installation nut. Is nut loose?	Yes	Tighten generator terminal B installation nut, then go to Step 7.
4		No	Go to the next step.
5	INSPECT POOR INSTALLATION OF BATTERY POSITIVE TERMINAL Inspect for looseness of battery positive terminal. Is the terminal loose?	Yes	Connect the battery positive terminal correctly, then go to Step 7.
5		No	Go to the next step.
6	INSPECT BATTERY CHARGING CIRCUIT Disconnect the generator terminal B. Measure the voltage between generator terminal B (wiring-harness-side) and body ground. Is the voltage B+ ?	Yes	Go to the next step.
6		No	Repair or replace the wiring harness between generator terminal B and battery positive terminal, then go to the next step.
7	VERIFY TROUBLESHOOTING OF DTC P2502 COMPLETED Make sure to reconnect all connectors. Clear the DTC from the PCM memory using the M-MDS. (See AFTER REPAIR PROCEDURE .) Perform the KOER self test. (See KOEO/KOER SELF TEST .) Is the same DTC present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION .)
7		No	Go to the next step.
8	VERIFY AFTER REPAIR PROCEDURE Perform "AFTER REPAIR PROCEDURE". (See AFTER REPAIR PROCEDURE .) Is there any DTC present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE .)
8		No	Troubleshooting completed.