|
DTC B1318 |
Input voltage low |
|
DETECTION CONDITION |
• Voltage detected at water heater unit terminals A is less than 9 V.
|
|
POSSIBLE CAUSE
|
• Generator malfunction
• Battery malfunction
|
|
|
|
|
DTC B1318 |
Input voltage low |
|
DETECTION CONDITION |
• Voltage detected at water heater unit terminals A is less than 9 V.
|
|
POSSIBLE CAUSE
|
• Generator malfunction
• Battery malfunction
|
|
|
|
Diagnostic procedure
|
STEP
|
INSPECTION
|
ACTION
|
|
|---|---|---|---|
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1
|
INSPECT BATTERY VOLTAGE
• Measure battery voltage.
• Is voltage more than 9 V?
|
Yes
|
Go to next step.
|
|
No
|
Battery is weak.
• Inspect charging system.
|
||
|
2
|
INSPECT WIRING HARNESS BETWEEN W.HEAT 40 A FUSE AND WATER HEATER UNIT
• Turn ignition switch to ON position.
• Measure voltage at water heater unit connector terminal A.
• Is voltage more than 9 V?
|
Yes
|
Go to next step.
|
|
No
|
Repair wiring harness.
|
||
|
3
|
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.
|
||
|
4
|
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.
|
||
