Inspection Procedure
4: The front door lock actuator (driver’s side) signal is not received.
caution
Before replacing the ECU, ensure
that the power supply circuit, the earth circuit and the communication circuit are normal.
COMMENTS ON TROUBLE SYMPTOM
The front door lock actuator (driver’s side) input signal is used for the operation
judgement of the functions below. If the signal is abnormal, these functions will not work normally.
Central door locking
Keyless entry system
Room lamp
PROBABLE CAUSES
Malfunction of the front door lock actuator (driver’s
side)
Malfunction of the ETACS-ECU
Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
STEP 1. Connector check: D-06 front door lock actuator
(LH) <LHD> or D-03 front door lock actuator (RH) <RHD> connector
Q.
Is the check result normal?
Go to Step 2.
Repair the defective connector.
STEP 2. Front door lock actuator (driver’s side) check
Refer to GROUP 42 - Door .
Q.
Is the check result normal?
Go to Step 3.
Replace the front door lock actuator (driver’s side).
STEP 3. Resistance measurement at the D-06 front door lock actuator
(LH) <LHD> or D-03 front door lock actuator (RH) <RHD> connector
(1)Disconnect the connector, and measure at the wiring harness side.
(2)Measure the resistance between the D-06 front door lock actuator (RH) connector
terminal No. 3 and the body earth. <LHD> OK: Continuity exists (2 Ω or less)
(3)Measure the resistance between the D-03 front door lock actuator (RH) connector
terminal No. 3 and the body earth. <RHD> OK: Continuity exists (2 Ω or less)
Q.
Is the check result normal?
Go to Step 5.
Go to Step 4.
STEP 4. Wiring harness check between the D-06 front door lock actuator
(LH) connector (terminal 3) <LHD> or D-03 front door lock actuator (RH) connector (terminal
3) <RHD> and the body earth
Check the earth wires for open circuit.
note
Prior to the wiring harness inspection, check intermediate connector B-22 <LHD>, B-109 <RHD> and
earth connector B-25, and repair if necessary.
Q.
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 ).
Repair the wiring harness.
STEP 5. Connector check B-318 ETACS-ECU connector
Q.
Is the check result normal?
Go to Step 6
Repair the defective connector.
STEP 6. Wiring harness check between the D-06 front door lock actuator
(LH) connector (terminals 1 or 2) <LHD> or D-03 front door lock actuator (RH) connector
(terminals 1 or 2) <RHD> and the B-318 ETACS-ECU connector (terminals 36 or 41).
Check the input line for open circuit.
note
Prior to the wiring harness inspection, check intermediate connector B-22 <LHD>, B-109 <RHD>, and
repair if necessary.
Q.
Is the check result normal?
Go to Step 7
Repair the wiring harness.
STEP 7. M.U.T.-III data list
Change the status of driver’s door from unlocked to locked.
Item No.
Item name
Normal condition
20
Driver’s door unlock switch
ON → OFF
21
Driver’s door lock switch
OFF → ON
OK: Normal condition is displayed.
Q.
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 and register the ID codes (Refer to ).
)
)
)
)
Go to Step 2.
Repair the defective connector.
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