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Inspection Procedure 8: The liftgate lock actuator <vehicles without power liftgate> or liftgate latch <vehicles with power liftgate> signal is not received.
 
 
cautionBefore replacing the ECU, ensure that the power supply circuit, the ground circuit and the communication circuit are normal.
 
 
TECHNICAL DESCRIPTION (COMMENT)
If there is an error to the liftgate lock actuator <vehicles without power liftgate> or liftgate latch <vehicles with power liftgate> input signal, the liftgate lock actuator <vehicles without power liftgate> or liftgate latch <vehicles with power liftgate> signal is no longer output to the communication line.
 
 
TROUBLESHOOTING HINTS
  • The liftgate lock actuator may be defective <vehicles without power liftgate>
  • The liftgate latch may be defective <vehicles with power liftgate>
  • The ETACS-ECU may be defective
  • The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector
 
 
DIAGNOSIS
Required Special Tools:
  • MB991223: Harness Set
  • MB992006: Extra Fine Probe
STEP 1. Check the installation condition.
Check that the liftgate lock actuator <vehicles without power liftgate> or liftgate latch <vehicles with power liftgate> is installed to the body correctly.
Is the check result normal?
Go to Step 2.
Correct the installation condition.
 
STEP 2. Liftgate lock actuator <vehicles without power liftgate> or liftgate latch <vehicles with power liftgate> check
Refer to GROUP 42A - Liftgate <vehicles without power liftgate> or <vehicles with power liftgate>.
Is the check result normal?
Go to Step 3.
Replace the liftgate lock actuator <vehicles without power liftgate> or liftgate latch <vehicles with power liftgate>.
 
STEP 3. Check of short to power supply, short to ground, and open circuit in TRID line between ETACS-ECU connector and liftgate lock actuator <vehicles without power liftgate> or liftgate latch <vehicles with power liftgate> connector
Is the check result normal?
Go to Step 4.
Repair the connector(s) or wiring harness.
 
STEP 4. Using scan tool (M.U.T.-IIISE), check data list.
(1)
cautionTo prevent damage to scan tool (M.U.T.-IIISE), always turn off the power supply mode of the electric motor switch before connecting or disconnecting scan tool (M.U.T.-IIISE).
Connect scan tool (M.U.T.-IIISE). Refer to "How to connect Scan Tool (M.U.T.-IIISE) ."
(2) Open the liftgate.
 
Item No.Item nameNormal condition
260Gate ajar switchOpen
OK: Normal condition is displayed.
Is the check result normal?
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ).
Replace the ETACS-ECU.