DTC B1318[PJB]

id090208831000

DTC B1318

Battery voltage low
DETECTION CONDITION
Input voltage from the battery is excessively low
POSSIBLE CAUSE
•  Open circuit in wiring harness between PJB terminal J-01 F and battery
•  Open circuit in wiring harness between PJB terminal J-03 AP and battery
•  Short to GND in wiring harness between PJB terminal J-01 F and battery
•  Short to GND in wiring harness between PJB terminal J-03 AP and battery
•  Battery malfunction
•  Generator malfunction
•  PJB malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
INSPECT DTC FROM PCM
•  Connect the M-MDS to the DLC-2.
•  Are any DTCs from the PCM displayed?
Yes
Perform DTC inspection.
(See DTC TABLE[ZJ, ZY, Z6].)
(See DTC TABLE[MTX, LF ATX (FS5A-EL)].)
(See DTC TABLE[LF ATX (FN4A-EL), L3 ATX].)
(See DTC TABLE[L3 Turbo].)
(See DTC TABLE[MZ-CD 1.6 (Y6)].)
Go to Step 5.
No
Go to the next step.
2
INSPECT PJB CONNECTOR
•  Disconnect the PJB connector.
•  Inspect the PJB connector terminals for poor connection (such as damaged/pulled-out pins, and corrosion).
•  Is there any malfunction?
Yes
Repair or replace the terminal, then go to Step 5.
No
Go to the next step.
3
INSPECT PJB POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT
•  Disconnect the negative battery cable.
•  Disconnect the positive battery cable.
•  Inspect for continuity between following terminals:
―  PJB terminal J-01 F (wiring harness-side) — battery positive terminal (wiring harness-side)
―  PJB terminal J-03 AP (wiring harness-side) — battery positive terminal (wiring harness-side)
•  Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness for a possible open circuit, then go to Step 5.
4
INSPECT PJB POWER SUPPLY CIRCUIT FOR SHORT TO GND
•  Inspect for continuity between following terminals:
―  PJB terminal J-01 F (wiring harness-side) — body GND
―  PJB terminal J-03 AP (wiring harness-side) — body GND
•  Is there continuity?
Yes
Repair or replace the wiring harness for a possible short to GND, then go to the next step.
No
Go to the next step.
5
VERIFY TROUBLESHOOTING COMPLETED
•  Make sure to reconnect all disconnected connectors.
•  Clear the DTC from the PJB memory using the M-MDS.
•  Turn the ignition switch to LOCK position then ON position.
•  Is the same DTC present?
Yes
Replace the PJB.
(See PASSENGER JUNCTION BOX (PJB) REMOVAL/INSTALLATION.)
No
DTC troubleshooting completed.