DTC B1317 [WATER HEATER SYSTEM]

id070228815400

DTC B1317

Input voltage high

DETECTION CONDITION

•  Voltage detected at water heater unit terminals E is more than 16 V.

POSSIBLE CAUSE

•  Short to power circuit between the generator and PCM

•  Generator malfunction

•  Battery malfunction

DTC B1317	Input voltage high
DETECTION CONDITION	• Voltage detected at water heater unit terminals E 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 the next step.
1		No	Inspect charging system.
2	INSPECT WATER HEATER UNIT • Clear the DTC. (See CLEARING DTC [WATER HEATER SYSTEM].) • Perform the KOEO Self Test. (See DTC DISPLAY [WATER HEATER SYSTEM].) • Is the same DTC present?	Yes	Replace the water heater unit. (See WATER HEATER UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
2		No	Go to the next step.
3	VERIFY AFTER REPAIR PROCEDURE • Perform the after repair procedure. (See CLEARING DTC [WATER HEATER SYSTEM].) (See DTC DISPLAY [WATER HEATER SYSTEM].) • Are any DTCs present?	Yes	Go to the applicable DTC troubleshooting.
3		No	Troubleshooting completed.