DTC B1318 [POWER LIFTGATE (PLG) SYSTEM]
id0902e9395000
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DTC B1318 |
Power supply voltage decreases |
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DETECTION CONDITION
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Input voltage from the battery is excessively low (below 10.5 V)
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POSSIBLE CAUSE
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• PLG 20 A fuse malfunction
• Open or short circuit in wiring harness between PLG control module terminal 1C and battery
• Battery malfunction
• Generator malfunction
• PLG control module malfunction
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Diagnostic procedure
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STEP |
INSPECTION |
ACTION |
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1
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INSPECT BATTERY VOLTAGE
• Inspect the battery voltage.
(See BATTERY INSPECTION [MZI-3.7].)
• Is the battery voltage normal?
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Yes
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Go to the next step.
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No
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Recharge or replace the battery.
(See BATTERY RECHARGING [MZI-3.7].)
Go to Step 4.
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2
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INSPECT FOR PCM DTCs
• Connect the M-MDS to the DLC-2.
• Are any DTCs for the PCM displayed?
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Yes
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Perform troubleshooting according to the corresponding DTC inspection.
Go to Step 4.
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No
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Go to the next step.
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3
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INSPECT THE FOLLOWING WIRING HARNESSES
• Disconnect the negative battery cable.
• Disconnect the positive battery cable.
• Disconnect the PLG control module connector.
• Inspect the wiring harness between PLG control module terminal 1C (wiring harness-side) and positive battery terminal (wiring harness-side) for an open circuit/short circuit to ground system.
• Is the wiring harness normal?
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Yes
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Go to the next step.
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No
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Repair or replace the wiring harness.
Go to the next step.
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4
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VERIFY CORRECTION COMPLETED
• Reconnect the disconnected connector.
• Clear the DTC.
• Operate the PLG system.
• Is DTC B1318 stored?
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Yes
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Replace the PLG control module.
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No
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DTC troubleshooting completed.
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