DTC B1318 [MULTI INFORMATION DISPLAY]SM2445945
DTC B1318 [MULTI INFORMATION DISPLAY]

id0902i4935500

DESCRIPTION

Low power supply circuit voltage
DETECTION CONDITION
• Multi information display 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
• Multi information display connector or terminals malfunction
• Open circuit or short to ground in multi information display power supply circuit
― Short to ground in wiring harness between ignition switch and multi information display terminal 1E
― METER 15 A fuse malfunction
― Open circuit in wiring harness between ignition switch and multi information display terminal 1E
• Multi information display malfunction

Diagnostic Procedure

STEP

INSPECTION

ACTION
1
VERIFY PCM DTC
• Perform the PCM DTC inspection 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 MULTI INFORMATION DISPLAY CONNECTOR CONDITION
• Turn the ignition switch to the LOCK position.
• Disconnect the negative battery cable.
• Disconnect the multi information display connector.
• Inspect the connector and terminals (corrosion, damage, pin disconnection).
• Is there any malfunction?
Yes
Repair or replace the connector and/or terminal, then go to Step 6.
No
Go to the next step.
5
INSPECT POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT OR SHORT TO GROUND
• Multi information display connector is disconnected.
• Reconnect the negative battery cable.
• Turn the ignition switch to the ON position.
• Measure the voltage at multi information display terminal 1E (wiring harness-side).
• Is the voltage B+?
Yes
Go to the next step.
No
Inspect the METER 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 to reconnect the disconnected connectors.
• Reconnect the negative battery cable.
• Clear the DTC from multi information display using the M-MDS. (See CLEARING DTC [MULTI INFORMATION DISPLAY].)
• Turn the ignition switch to the ON position.
• Perform the “DTC INSPECTION” to confirm the multi information display DTC. (See DTC INSPECTION [MULTI INFORMATION DISPLAY].)
• Is the same DTC present?
Yes
Replace the multi information display, then go to the next step.
(See MULTI INFORMATION DISPLAY 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 [MULTI INFORMATION DISPLAY].)
No
DTC troubleshooting completed.