DTC U3003:16 [INSTRUMENT CLUSTER]SM2445872
DTC U3003:16 [INSTRUMENT CLUSTER]

id0902e8999400

DESCRIPTION

Power supply circuit malfunction
DETECTION CONDITION
• Instrument cluster power supply circuit voltage is lower than 10 V when the ignition switch is ON.
POSSIBLE CAUSE
• PCM DTC is stored
• Battery malfunction
• Generator malfunction
• Instrument cluster connector or terminals malfunction
• Open circuit or short to ground in instrument cluster power supply circuit
― Short to ground in the wiring harness between battery positive terminal and instrument cluster terminal 2E
― ROOM 15 A fuse malfunction
― Open circuit in the wiring harness between battery positive terminal and instrument cluster terminal 2E
• Instrument cluster malfunction

Diagnostic Procedure

STEP

INSPECTION

ACTION
1
CONFIRM PCM DTC
• Perform the DTC inspection to confirm the PCM DTC using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [L5].) (See ON-BOARD DIAGNOSTIC TEST [L3 Turbo].) (See ON-BOARD DIAGNOSTIC TEST [MZR-CD 2.2].)
• Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [L5].)
(See DTC TABLE [L3 Turbo].)
(See DTC TABLE [MZR-CD 2.2].)
No
Go to the next step.
2
INSPECT BATTERY
• Inspect the battery. (See BATTERY INSPECTION [L5].) (See BATTERY INSPECTION [L3 Turbo].) (See BATTERY INSPECTION [MZR-CD 2.2].)
• Is there any malfunction?
Yes
Recharge or replace the battery, then go to Step 6.
(See BATTERY RECHARGING [L5].)
(See BATTERY RECHARGING [L3 Turbo].)
(See BATTERY RECHARGING [MZR-CD 2.2].)
(See BATTERY REMOVAL/INSTALLATION [L5].)
(See BATTERY REMOVAL/INSTALLATION [L3 Turbo].)
(See BATTERY REMOVAL/INSTALLATION [MZR-CD 2.2].)
No
Go to the next step.
3
INSPECT GENERATOR
• Inspect the generator. (See GENERATOR INSPECTION [L5].) (See GENERATOR INSPECTION [L3 Turbo].) (See GENERATOR INSPECTION [MZR-CD 2.2].)
• Is there any malfunction?
Yes
Replace the generator, then go to Step 6.
(See GENERATOR REMOVAL/INSTALLATION [L5].)
(See GENERATOR REMOVAL/INSTALLATION [L3 Turbo].)
(See GENERATOR REMOVAL/INSTALLATION [MZR-CD 2.2].)
No
Go to the next step.
4
INSPECT INSTRUMENT CLUSTER CONNECTOR CONDITION
• Turn the ignition switch to the LOCK position.
• Disconnect the negative battery cable.
• Disconnect the instrument cluster connector.
• Inspect the connector for poor connection (such as damaged/pulled-out pins, and corrosion).
• Is there any malfunction?
Yes
Repair or replace the connector or terminals, then go to Step 6.
No
Go to the next step.
5
INSPECT POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT OR SHORT TO GROUND
• Instrument cluster connector is disconnected.
• Reconnect the negative battery cable.
• Measure the voltage at instrument cluster terminal 2E (wiring harness-side).
• Is the voltage B+?
Yes
Go to the next step.
No
Inspect the ROOM 15 A fuse.
If the fuse is melt:
• Repair or replace the wiring harness for a possible short to ground.
• Replace the fuse.
If the fuse is deterioration:
• Replace the fuse.
If the fuse is normal:
• Repair or replace the wiring harness for a possible open circuit.
Go to the next step.
6
VERIFY TROUBLESHOOTING COMPLETED
• Make sure reconnect the disconnected connectors.
• Reconnect the negative battery cable.
• Clear the DTC from the instrument cluster using the M-MDS. (See CLEARING DTC [INSTRUMENT CLUSTER].)
• Turn the ignition switch to the ON position.
• Perform the “DTC INSPECTION” to confirm the instrument cluster DTC using the M-MDS. (See DTC INSPECTION [INSTRUMENT CLUSTER].)
• Is the same DTC present?
Yes
Replace the instrument cluster, then go to the next step.
(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
No
Go to the next step.
7
VERIFY THAT NO OTHER DTCs ARE PRESENT
• Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [INSTRUMENT CLUSTER].)
No
DTC troubleshooting completed.