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.
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.