DTC B2939 [POWER LIFTGATE (PLG) SYSTEM]

id0902e9395300

DTC B2939

Clutch circuit malfunction
DETECTION CONDITION
The current flowing to the PLG motor is normal (1 A or more), however, the output signal of rotation sensor A continues to not change while the PLG is operating.
POSSIBLE CAUSE
•  Open circuit in wiring harness between PLG control module terminal 2I and PLG drive unit terminal M
•  Open circuit in wiring harness between PLG control module terminal 2G and PLG drive unit terminal N
•  Clutch malfunction
•  PLG control module malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
INSPECT WIRING HARNESS BETWEEN PLG CONTROL MODULE AND PLG DRIVE UNIT
•  Disconnect the PLG control module connector.
•  Disconnect the PLG drive unit connector.
•  Inspect the wiring harness between PLG control module terminals 2I and 2G, and PLG drive unit terminals M and N for an open circuit.
•  Is the wiring harness normal?
Yes
Replace the PLG drive unit.
(See POWER LIFTGATE (PLG) DRIVE UNIT REMOVAL/INSTALLATION.)
Go to the next step.
No
Repair or replace the wiring harness.
Go to the next step.
2
VERIFY CORRECTION COMPLETED
•  Reconnect the disconnected connector.
•  Clear the DTC.
•  Operate the PLG system.
•  Is DTC B2939 stored?
Yes
Replace the PLG control module.
(See POWER LIFTGATE (PLG) CONTROL MODULE REMOVAL/INSTALLATION.)
No
DTC troubleshooting completed.