DTC P2504:00 [MZR 1.5, MZR 1.6]

id0102f0709700

DTC P2504:00

Charging system voltage high input

DETECTION CONDITION

•  The PCM determines that the generator output voltage is 18.5 V or more or battery voltage is 16.0 V or more while the engine running.

Diagnostic support note

•  This is continuous monitor (other).

•  The MIL does not illuminate.

•  FREEZE FRAME DATA (Mode 2)/Snapshot data is not available.

•  The DTC is stored in the PCM memory.

POSSIBLE CAUSE

•  Generator connector or terminals malfunction

•  Battery malfunction

•  PCM connector or terminals malfunction

•  Short to power supply in wiring harness between generator terminal D and PCM terminal 2AF

•  Generator malfunction

•  PCM malfunction

DTC P2504:00	Charging system voltage high input
DETECTION CONDITION	• The PCM determines that the generator output voltage is 18.5 V or more or battery voltage is 16.0 V or more while the engine running. Diagnostic support note • This is continuous monitor (other). • The MIL does not illuminate. • FREEZE FRAME DATA (Mode 2)/Snapshot data is not available. • The DTC is stored in the PCM memory.
POSSIBLE CAUSE	• Generator connector or terminals malfunction • Battery malfunction • PCM connector or terminals malfunction • Short to power supply in wiring harness between generator terminal D and PCM terminal 2AF • Generator malfunction • PCM malfunction

Diagnostic procedure

STEP	INSPECTION		ACTION
1	VERIFY RELATED SERVICE INFORMATION AVAILABILITY • Verify related Service Information availability. • Is any related Service Information available?	Yes	Perform repair or diagnosis according to the available Service Information. • If the vehicle is not repaired, go to the next step.
1		No	Go to the next step.
2	INSPECT GENERATOR CONNECTOR AND TERMINALS • Switch the ignition to off. • Disconnect the generator connector. • Inspect for poor connection (such as damaged/pulled-out pins, and corrosion). • Is there any malfunction?	Yes	Repair or replace the connector or terminals, then go to Step 7.
2		No	Go to the next step.
3	INSPECT BATTERY • Inspect the battery. (See BATTERY INSPECTION [MZR 1.5, MZR 1.6].) • Is there any malfunction?	Yes	Replace the battery, then go to Step 7. (See BATTERY REMOVAL/INSTALLATION [MZR 1.5, MZR 1.6].)
3		No	Go to the next step.
4	INSPECT PCM CONNECTOR AND TERMINALS • Disconnect the PCM connector. • Inspect for poor connection (such as damaged/pulled-out pins, and corrosion). • Is there any malfunction?	Yes	Repair or replace the connector or terminals, then go to Step 7.
4		No	Go to the next step.
5	INSPECT GENERATOR CONTROL CIRCUIT FOR SHORT TO POWER SUPPLY • Generator and PCM connectors are disconnected. • Switch the ignition to ON (engine off). • Measure the voltage between generator terminal D (wiring harness-side) and body ground. • Is there any voltage?	Yes	Repair or replace the wiring harness for a possible short to power supply, then go to Step 7.
5		No	Go to the next step.
6	INSPECT GENERATOR • Switch the ignition to off. • Inspect the generator. (See GENERATOR INSPECTION [MZR 1.5, MZR 1.6].) • Is there any malfunction?	Yes	Repair or replace the malfunctioning part according to the inspection results, then go to the next step. (See GENERATOR REMOVAL/INSTALLATION [MZR 1.5, MZR 1.6].) (See GENERATOR DISASSEMBLY/ASSEMBLY [MZR 1.5, MZR 1.6].)
6		No	Go to the next step.
7	VERIFY DTC TROUBLESHOOTING COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the PCM memory using the M-MDS. (See AFTER REPAIR PROCEDURE [MZR 1.5, MZR 1.6].) • Perform the KOER self test. (See KOEO/KOER SELF TEST [MZR 1.5, MZR 1.6].) • Is the same DTC present?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the PCM. (See PCM REMOVAL/INSTALLATION [MZR 1.5, MZR 1.6].) Go to the next step.
7		No	Go to the next step.
8	VERIFY AFTER REPAIR PROCEDURE • Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [MZR 1.5, MZR 1.6].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [MZR 1.5, MZR 1.6].)
8		No	DTC troubleshooting completed.