DTC B144E:95 [POWER LIFTGATE (PLG) CONTROL MODULE]


id0902o8048000

Description

Error signal received from power liftgate (PLG) drive unit (RH)

Detection condition
•  The power liftgate (PLG) control module detects a pulse opposite to the direction from the power liftgate (PLG) drive unit (RH).
Fail-safe
•  Stops the power liftgate (PLG) system operation.
Possible cause
•  Power liftgate (PLG) drive unit (RH) connector or terminal malfunction
•  Power liftgate (PLG) control module connector or terminal malfunction
•  Short to ground in wiring harness between the following terminals:
?  Power liftgate (PLG) drive unit (RH) terminal D?Power liftgate (PLG) control module terminal 1I
?  Power liftgate (PLG) drive unit (RH) terminal B?Power liftgate (PLG) control module terminal 1G
•  Short to power supply in wiring harness between the following terminals:
?  Power liftgate (PLG) drive unit (RH) terminal D?Power liftgate (PLG) control module terminal 1I
?  Power liftgate (PLG) drive unit (RH) terminal B?Power liftgate (PLG) control module terminal 1G
•  Open circuit in wiring harness between the following terminals:
?  Power liftgate (PLG) drive unit (RH) terminal D?Power liftgate (PLG) control module terminal 1I
?  Power liftgate (PLG) drive unit (RH) terminal B?Power liftgate (PLG) control module terminal 1G
•  Power liftgate (PLG) drive unit (RH) malfunction
•  Power liftgate (PLG) control module malfunction

Diagnostic Procedure

STEP

INSPECTION

ACTION

1
INSPECT POWER LIFTGATE (PLG) DRIVE UNIT (RH) CONNECTOR CONDITION
•  Switch the ignition off.
•  Disconnect the negative battery terminal.
•  Disconnect the power liftgate (PLG) drive unit (RH) connector.
•  Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
•  Is the connector normal?
Yes
Go to the next step.
No
Repair or replace the connector, then go to Step 7.
2
INSPECT POWER LIFTGATE (PLG) CONTROL MODULE CONNECTOR CONDITION
•  Disconnect the power liftgate (PLG) control module connector.
•  Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
•  Is the connector normal?
Yes
Go to the next step.
No
Repair or replace the connector, then go to Step 7.
3
INSPECT POWER LIFTGATE (PLG) DRIVE UNIT (RH) CIRCUIT FOR SHORT TO GROUND
•  Verify that the power liftgate (PLG) drive unit (RH) and power liftgate (PLG) control module connectors are disconnected.
•  Inspect for continuity between the following terminals (wiring harness-side) and body ground:
?  Power liftgate (PLG) drive unit (RH) terminal D
?  Power liftgate (PLG) drive unit (RH) terminal B
•  Is there continuity?
Yes
Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
•  Power liftgate (PLG) drive unit (RH) terminal D?Power liftgate (PLG) control module terminal 1I
•  Power liftgate (PLG) drive unit (RH) terminal B?Power liftgate (PLG) control module terminal 1G
If there is a common connector:
•  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.
•  Repair or replace the malfunctioning part.
If there is no common connector:
•  Repair or replace the wiring harness which has a short to ground.
Go to Step 7.
No
Go to the next step.
4
INSPECT POWER LIFTGATE (PLG) DRIVE UNIT (RH) CIRCUIT FOR SHORT TO POWER SUPPLY
•  Verify that the power liftgate (PLG) drive unit (RH) and power liftgate (PLG) control module connectors are disconnected.
•  Connect the negative battery terminal.
•  Measure the voltage at the following terminals (wiring harness-side):
?  Power liftgate (PLG) drive unit (RH) terminal D
?  Power liftgate (PLG) drive unit (RH) terminal B
•  Is the voltage 0 V?
Yes
Go to the next step.
No
Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
•  Power liftgate (PLG) drive unit (RH) terminal D?Power liftgate (PLG) control module terminal 1I
•  Power liftgate (PLG) drive unit (RH) terminal B?Power liftgate (PLG) control module terminal 1G
If there is a common connector:
•  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to power supply.
•  Repair or replace the malfunctioning part.
If there is no common connector:
•  Repair or replace the wiring harness which has a short to power supply.
Go to Step 7.
5
INSPECT POWER LIFTGATE (PLG) DRIVE UNIT (RH) CIRCUIT FOR OPEN CIRCUIT
•  Switch the ignition off.
•  Disconnect the negative battery terminal.
•  Verify that the power liftgate (PLG) drive unit (RH) and power liftgate (PLG) control module connectors are disconnected.
•  Inspect for continuity between the following terminals (wiring harness-side):
?  Power liftgate (PLG) drive unit (RH) terminal D?Power liftgate (PLG) control module terminal 1I
?  Power liftgate (PLG) drive unit (RH) terminal B?Power liftgate (PLG) control module terminal 1G
•  Is there continuity?
Yes
Go to the next step.
No
Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
•  Power liftgate (PLG) drive unit (RH) terminal D?Power liftgate (PLG) control module terminal 1I
•  Power liftgate (PLG) drive unit (RH) terminal B?Power liftgate (PLG) control module terminal 1G
If there is a common connector:
•  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.
•  Repair or replace the malfunctioning part.
If there is no common connector:
•  Repair or replace the wiring harness which has an open circuit.
Go to Step 7.
6
INSPECT POWER LIFTGATE (PLG) DRIVE UNIT (RH)
•  Inspect the power liftgate (PLG) drive unit (RH).
•  Is the power liftgate (PLG) drive unit (RH) normal?
Yes
Go to the next step.
No
Replace the power liftgate (PLG) drive unit (RH), then go to the next step.
7
VERIFY THAT REPAIRS HAVE BEEN COMPLETED
•  Always reconnect all disconnected connectors.
•  Connect the negative battery terminal.
•  Clear the DTC for the power liftgate (PLG) control module using the M-MDS.
•  Retrieve the power liftgate (PLG) control module DTCs using the M-MDS.
•  Is the same DTC displayed?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the power liftgate (PLG) control module.
Go to the next step.
No
Go to the next step.
8
VERIFY IF OTHER DTCs DISPLAYED
•  Are any other DTCs displayed?
Yes
Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
No
DTC troubleshooting completed.