DTC U3003:16 [INSTRUMENT CLUSTER]

id0902e8999400

DTC U3003:16

Battery positive voltage is low

Detection Condition

Instrument cluster power supply voltage less than 10 V

Possible Causes

•  Open circuit or short to ground in the wiring harness between the battery (+) terminal and instrument cluster terminal 2S or terminal 2U.

•  Open circuit or short to the power supply in the wiring harness between the instrument cluster and body ground

•  METER 10 A fuse malfunction

•  ROOM 15 A fuse malfunction

•  Battery malfunction

•  Instrument cluster malfunction

DTC U3003:16	Battery positive voltage is low
Detection Condition	Instrument cluster power supply voltage less than 10 V
Possible Causes	• Open circuit or short to ground in the wiring harness between the battery (+) terminal and instrument cluster terminal 2S or terminal 2U. • Open circuit or short to the power supply in the wiring harness between the instrument cluster and body ground • METER 10 A fuse malfunction • ROOM 15 A fuse malfunction • Battery malfunction • Instrument cluster malfunction

System Wiring Diagram

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Diagnostic Procedure

Step

Inspection

Action

1

BATTERY INSPECTION

•  Refer to the battery inspection and inspect the battery.
(See BATTERY INSPECTION [ZJ, ZY].)

(See BATTERY INSPECTION [MZ-CD 1.4 DI Turbo].)

(See BATTERY INSPECTION [MZ-CD 1.6 (Y6)].)

•  Is the battery normal?

Yes

Go to the next step.

No

Replace or charge the battery.

(See BATTERY REMOVAL/INSTALLATION [ZJ, ZY].)

(See BATTERY RECHARGING [ZJ, ZY].)

(See BATTERY REMOVAL/INSTALLATION [MZ-CD 1.4 DI Turbo].)

(See BATTERY RECHARGING [MZ-CD 1.4 DI Turbo].)

(See BATTERY REMOVAL/INSTALLATION [MZ-CD 1.4 DI Turbo].)

(See BATTERY RECHARGING [MZ-CD 1.6 (Y6)].)

(See BATTERY REMOVAL/INSTALLATION [MZ-CD 1.6 (Y6)].)

2

FUSE INSPECTION

•  Turn the ignition switch to the LOCK position.

•  Disconnect the negative battery cable.

•  Remove the METER 10 A fuse and ROOM 15 A fuse.

•  Is the fuse normal?

Yes

Go to the next step.

No

Replace the METER 10 A fuse or ROOM 15 A fuse.

3

INSPECT WIRING HARNESS BETWEEN BATTERY (+) TERMINAL AND INSTRUMENT CLUSTER

•  Turn the ignition switch to the LOCK position.

•  Disconnect the negative battery cable.

•  Install the METER 10 A fuse and ROOM 15 A fuse.

•  Remove the meter hood.
(See METER HOOD REMOVAL/INSTALLATION.)

•  Remove the instrument cluster.
(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)

•  Disconnect the instrument cluster connector.

•  Connect the negative battery cable.

•  Measure the voltage between instrument cluster terminals 2S and 2U.

•  Is the voltage between 9—15.9 V?

Yes

Go to the next step.

No

Repair the related wiring harness.

4

INSPECT WIRING HARNESS BETWEEN INSTRUMENT CLUSTER AND BODY GROUND

•  Inspect the wiring harness between instrument cluster connector terminal 2A and body ground.

―  Short to power supply

―  Open circuit

•  Is the wiring harness normal?

Yes

Go to the next step.

No

Replace the wiring harness between the instrument cluster and body ground.

5

PERFORM INSTRUMENT CLUSTER DTC INSPECTION

•  Connect the instrument cluster connector.

•  Connect the negative battery cable.

•  Turn the ignition switch to the ON position.

•  Clear DTCs using the M-MDS.
(See CLEARING DTC [INSTRUMENT CLUSTER].)

•  Perform the instrument cluster DTC inspection using the M-MDS.
(See DTC INSPECTION [INSTRUMENT CLUSTER].)

•  Is DTC U3003:16 displayed?

Yes

Replace the instrument cluster.

(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)

Go to the next step.

No

DTC troubleshooting completed.

6

VERIFY THAT NO OTHER DTCs ARE RECORDED

•  Clear DTCs using the M-MDS.
(See CLEARING DTC [INSTRUMENT CLUSTER].)

•  Inspect the instrument cluster DTCs.
(See DTC INSPECTION [INSTRUMENT CLUSTER].)

•  Are any other DTCs displayed?

Yes

Perform the corresponding DTC inspection.

(See DTC TABLE [INSTRUMENT CLUSTER].)

No

DTC troubleshooting completed.

Step	Inspection		Action
1	BATTERY INSPECTION • Refer to the battery inspection and inspect the battery. (See BATTERY INSPECTION [ZJ, ZY].) (See BATTERY INSPECTION [MZ-CD 1.4 DI Turbo].) (See BATTERY INSPECTION [MZ-CD 1.6 (Y6)].) • Is the battery normal?	Yes	Go to the next step.
1		No	Replace or charge the battery. (See BATTERY REMOVAL/INSTALLATION [ZJ, ZY].) (See BATTERY RECHARGING [ZJ, ZY].) (See BATTERY REMOVAL/INSTALLATION [MZ-CD 1.4 DI Turbo].) (See BATTERY RECHARGING [MZ-CD 1.4 DI Turbo].) (See BATTERY REMOVAL/INSTALLATION [MZ-CD 1.4 DI Turbo].) (See BATTERY RECHARGING [MZ-CD 1.6 (Y6)].) (See BATTERY REMOVAL/INSTALLATION [MZ-CD 1.6 (Y6)].)
2	FUSE INSPECTION • Turn the ignition switch to the LOCK position. • Disconnect the negative battery cable. • Remove the METER 10 A fuse and ROOM 15 A fuse. • Is the fuse normal?	Yes	Go to the next step.
2		No	Replace the METER 10 A fuse or ROOM 15 A fuse.
3	INSPECT WIRING HARNESS BETWEEN BATTERY (+) TERMINAL AND INSTRUMENT CLUSTER • Turn the ignition switch to the LOCK position. • Disconnect the negative battery cable. • Install the METER 10 A fuse and ROOM 15 A fuse. • Remove the meter hood. (See METER HOOD REMOVAL/INSTALLATION.) • Remove the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.) • Disconnect the instrument cluster connector. • Connect the negative battery cable. • Measure the voltage between instrument cluster terminals 2S and 2U. • Is the voltage between 9—15.9 V?	Yes	Go to the next step.
3		No	Repair the related wiring harness.
4	INSPECT WIRING HARNESS BETWEEN INSTRUMENT CLUSTER AND BODY GROUND • Inspect the wiring harness between instrument cluster connector terminal 2A and body ground. ― Short to power supply ― Open circuit • Is the wiring harness normal?	Yes	Go to the next step.
4		No	Replace the wiring harness between the instrument cluster and body ground.
5	PERFORM INSTRUMENT CLUSTER DTC INSPECTION • Connect the instrument cluster connector. • Connect the negative battery cable. • Turn the ignition switch to the ON position. • Clear DTCs using the M-MDS. (See CLEARING DTC [INSTRUMENT CLUSTER].) • Perform the instrument cluster DTC inspection using the M-MDS. (See DTC INSPECTION [INSTRUMENT CLUSTER].) • Is DTC U3003:16 displayed?	Yes	Replace the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.) Go to the next step.
5		No	DTC troubleshooting completed.
6	VERIFY THAT NO OTHER DTCs ARE RECORDED • Clear DTCs using the M-MDS. (See CLEARING DTC [INSTRUMENT CLUSTER].) • Inspect the instrument cluster DTCs. (See DTC INSPECTION [INSTRUMENT CLUSTER].) • Are any other DTCs displayed?	Yes	Perform the corresponding DTC inspection. (See DTC TABLE [INSTRUMENT CLUSTER].)
6		No	DTC troubleshooting completed.