#
DTC P2504 [AJ]

BME010202500W02

DTC P2504 | Battery overcharge
--- | ---
DETECTION CONDITION | • The PCM determines that the generator output voltage is 18.5 V or above, or the battery voltage is 16.0 V or above when the engine is running. Diagnostic support note • This is a continuous monitor (other). • The MIL illuminates if the PCM detects the above malfunction condition in the first drive cycle.
• PENDING CODE is available if the PCM detects the above malfunction condition.
• FREEZE FRAME DATA is not available.
• DTC is stored in PCM memory.
POSSIBLE CAUSE | • Generator malfunction • Connector or terminal malfunction • Short to power circuit between generator connector terminal D and PCM terminal 36 • PCM malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | VERIFY FREEZE FRAME DATA HAS BEEN RECORDED • Has FREEZE FRAME DATA been recorded? | Yes | Go to next step.
No | Record FREEZE FRAME DATA on repair order, then go to next step.
2 | VERIFY RELATED REPAIR INFORMATION AVAILABILITY • Check for related Service Information and/or on-line repair information availability. • Is any related repair information available? | Yes | Perform repair or diagnosis according to available repair information. • If vehicle is not repaired, go to next step.
No | Go to next step.
3 | INSPECT GENERATOR CONNECTOR FOR POOR CONNECTION • Turn the ignition switch off. • Disconnect generator connector. • Check for poor connection (such as damaged, pulled-out pins, and corrosion). • Is there any malfunction? | Yes | Repair or replace terminal, then go to Step 8.
No | Go to next step.
4 | CLASSIFY GENERATOR MALFUNCTION OR OTHER MALFUNCTION • Turn the ignition switch to ON (Engine OFF). • Measure voltage between generator terminal D (harness-side) and body GND. • Is voltage B+? | Yes | Go to next step.
No | Malfunction at the generator. Go to step 7.
5 | INSPECT PCM CONNECTOR FOR POOR CONNECTION • Turn the ignition switch off. • Disconnect PCM connector. • Check for poor connection (such as damaged, pulled-out pins, and corrosion). • Is there any malfunction? | Yes | Repair or replace terminal, then go to Step 8.
No | Go to next step.
6 | INSPECT GENERATOR CONTROL CIRCUIT FOR SHORT TO POWER • Turn the ignition switch to ON (Engine OFF). • Measure voltage between generator terminal D (harness-side) and body GND. • Is voltage B+? | Yes | Repair or replace harness for short to power, then go to Step 8.
No | Go to step 8.
7 | INSPECT GENERATOR CONTROL TERMINAL FOR SHORT TO POWER • Turn the ignition switch to ON (Engine OFF). • Measure voltage between generator terminal D (part-side) and body GND. • Is voltage B+? | Yes | Replace generator, then go to next step. (See GENERATOR REMOVAL/INSTALLATION [AJ].)
No | Go to next step.
8 | VERIFY TROUBLESHOOTING OF DTC P2504 COMPLETED • Make sure to reconnect all disconnected connectors. • Clear DTC from memory using WDS equivalent. • Turn the ignition switch to OFF, then start engine. • Is same DTC present? | Yes | Replace PCM, then go to next step. (See PCM REMOVAL/INSTALLATION [AJ].)
No | Go to next step.
9 | VERIFY AFTER REPAIR PROCEDURE • Perform "AFTER REPAIR PROCEDURE". (See AFTER REPAIR PROCEDURE [AJ].) • Are any DTCs present? | Yes | Go to applicable DTC inspection. (See DTC TABLE [AJ] (VIN: JM0 LW10J300 301406-, JMZ LW69J7*# 307683-, JM8 LW28J**# 301514-, JM8 LW28A**# 301514- (Assumed)).)
No | Troubleshooting completed.