DTC U3000:49 [WATER HEATER SYSTEM]SM2445573
DTC U3000:49 [WATER HEATER SYSTEM]

id070228730700

DTC

U3000:49

Internal electronic failure
DETECTION CONDITION
• CPU detects malfunction in the water heater unit
POSSIBLE CAUSE
• Water heater unit malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
INSPECT WATER HEATER UNIT
• Perform the water heater system operation check.
• Clear DTCs using the M-MDS.
• Perform the water heater unit DTC inspection using the M-MDS. (See DTC DISPLAY [WATER HEATER SYSTEM].) (See DTC DISPLAY [FULL-AUTO AIR CONDITIONER].)
• Is DTC U3000:49 displayed?
Yes
Replace the water heater unit, then go to the next step.
(See WATER HEATER UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
No
Go to the next step.
2
VERIFY AFTER REPAIR PROCEDURE
• Perform after repair procedure. (See DTC DISPLAY [WATER HEATER SYSTEM].) (See DTC DISPLAY [FULL-AUTO AIR CONDITIONER].)
• Are any DTCs present?
Yes
Go to the applicable DTC troubleshooting.
No
Troubleshooting completed.