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DTC No. P1C67-12: QC Signal failure
 
 
 
 
TROUBLE JUDGMENT
Check Condition
  • During quick charging (external power supply)
Judgment Criterion
  • The high input of the charging permission/prohibition signal is detected for 1 second or more.
 
 
TROUBLESHOOTING HINTS
  • Damaged wiring harness and connectors
  • Malfunction of the On Board Charger (OBC)/DC-DC converter
noteThe DTC No. P1C67-12 may be set due to the following external factor.
• Malfunction of the quick charger/external power supply equipment.
 
 
DIAGNOSIS
Required Special Tools:
  • MB992744: Vehicle communication interface-Lite (V.C.I.-Lite)
  • MB992745: V.C.I.-Lite main harness A
  • MB992747: V.C.I.-Lite USB cable short
  • MB992748: V.C.I.-Lite USB cable long
  • MB991223: Wiring harness set
  • MB992006: Extra fine probe
1.Check of the wiring harness between On Board Charger (OBC)/DC-DC converter and quick charge port (charging permission/prohibition signal line)
(1) Disconnect the On Board Charger (OBC)/DC-DC converter connector (B532), and measure at the wiring harness side.
(2) Change the power supply mode of the electric motor switch to ON (READY indicator: OFF).
(3) Measure the voltage between the following terminals.
  • Resistance between On Board Charger (OBC)/DC-DC converter connector (No. 3 terminal) and body ground
OK: 1 V or less
Is the check result normal?
Repair the connector(s) or wiring harness.
 
2.Check whether the DTC is set again.
(1) Erase the set DTC.
(2) Charge the drive battery by using the quick charger (external power supply equipment) other than the defective one.
(3) Check whether the DTC is set again.
Is the DTC set?
Replace the On Board Charger (OBC)/DC-DC converter (Refer to ON BOARD CHARGER (OBC) &DC-DC CONVERTER REMOVAL AND INSTALLATION).
Ask the user to inspect the quick charger/external power supply equipment.