CAUTIONCOMMENTS ON TROUBLE SYMPTOM
Input signal from the front passenger's door lock key cylinder switch is used to operate the central door locking function. If the signal is abnormal, the central door locking function will not work normally.POSSIBLE CAUSES
- Malfunction of the front passenger's door lock key cylinder switch
- Malfunction of the ETACS-ECU
- Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
Step 3. Measure the resistance at the E-18 door lock key cylinder switch (RH) connector.
- Disconnect the connector, and measure at the wiring harness side.
- Resistance between E-18 door lock key cylinder switch (RH) connector terminal No.2 and body earth
OK: 2 Ω
or less
Q: Is the check result normal?
YES:
Go to Step 5
.NO: Go to Step 4
.Step 4. Check the wiring harness between E-18 door lock key cylinder switch (RH) connector terminal No.2 and body earth.
NOTE: Prior to the wiring harness inspection, check intermediate connector C-15, and repair if necessary.
- Check the earth wires for open circuit.
Q: Is the check result normal?
YES:
Intermittent malfunction. (Refer to GROUP 00 -
How to Cope with Intermittent Malfunction 
).)NO: Repair the wiring harness.
Step 6. Check the wiring harness from E-18 door lock key cylinder switch (RH) connector terminal Nos.1 and 3 to C-220 ETACS-ECU connector terminal Nos.28 and 27.
NOTE: Prior to the wiring harness inspection, check intermediate connector C-15, and repair if necessary.
- Check the input line for open circuit.
Q: Is the check result normal?
YES:
Go to Step 7.NO: Repair the wiring harness.