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DTC B1317

id070200815400

DTC B1317 | Input voltage high
DETECTION CONDITION | • Voltage detected at water heater unit terminals A is more than 16 V.
POSSIBLE CAUSE | • Short to power circuit between the generator and PCM • Generator malfunction • Battery malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | INSPECT BATTERY VOLTAGE • Measure battery voltage. • Is voltage less than 16 V? | Yes | Go to next step.
No | Inspect charging system.
2 | INSPECT WATER HEATER UNIT • Clear the DTC. • Perform the KOEO Self Test. (SeeKOEO Self Test/Combustion Test.) • Is the same DTC present? | Yes | Replace the water heater unit. (See WATER HEATER UNIT REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)
No | Go to the next step.
3 | VERIFY AFTER REPAIR PROCEDURE • Perform the after repair procedure. (SeeAfter Repair Procedure.) • Are any DTCs present? | Yes | Go to the applicable DTC troubleshooting.
No | Troubleshooting completed.