DTC B1004, B2449, B2450 [WATER HEATER SYSTEM]


id070228815100

DTC

B1004

Glow plug malfunction: short to battery or transistor failure

B2449

Glow plug circuit short to ground

B2450

Glow plug circuit open

DETECTION CONDITION
•  CPU detects malfunction in glow plug circuit
POSSIBLE CAUSE
•  Water heater unit malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
INSPECT WATER HEATER UNIT
•  Replace the water heater unit.
•  Perform the Combustion Test.
•  Are any DTCs present?
Yes
Go to the applicable DTC troubleshooting.
No
Troubleshooting completed.