Inspection Procedure O-10
The driver's or passenger's door lock actuator switch is not sent to the ETACS-ECU.Driver's Or Passenger's Door Lock Actuator Switch Input Circuit:
Connector:
CIRCUIT OPERATION
The ETACS-ECU uses the input signal from the driver's, passenger's, rear and back door lock actuator switch to operate the following functions.
TECHNICAL DESCRIPTION (COMMENT)
The input signal from the driver's door lock actuator switch is used to operate the following systems or functions:
- Central door locking system
- Forgotten key prevention function
- Rolling lock function
- Keyless entry system
- Interior light dimming function
- Theft-alarm system
If the signal fails, these systems or function will not work normally.
TECHNICAL DESCRIPTION (COMMENT)
The input signal from the passenger's door lock actuator switch is used to operate the following systems or functions:
- Forgotten key prevention function
- Rolling lock function
- Theft-alarm system
If the signal fails, these systems or function will not work normally.
TROUBLESHOOTING HINTS
- Malfunction of the driver's or passenger's door latch assembly
- Malfunction of the ETACS-ECU
- Damaged harness wires or connectors
DIAGNOSIS
Required Special Tools:
- MB991223: Test Harness Set
- MB991502: Scan Tool (MUT-II)
- MB991529: Diagnostic Trouble Code Check Harness
STEP 1. Check the location of malfunction.
Q: Which door lock actuator switch signal is not input?
Driver's door: Go to Step 2.
Passenger's door: Go to Step 8.
STEP 2. Check the driver's door lock actuator switch.
Q: Is the driver's door lock actuator switch in good condition?
YES:Go to Step 3.
NO: Replace it. The input signal from the driver's door lock actuator switch should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.
STEP 3. Check the driver's door lock actuator switch ground circuit at driver's door lock actuator switch connector E-13
1. Disconnect driver's door lock actuator switch connector E-13 and measure at the harness side.
2. Measure the resistance between terminal 1 and ground.
Q: Is the resistance less than 2 ohm?
YES: Go to Step 6.
NO: Go to Step 4.
STEP 4. Check driver's door lock actuator switch connector E-13 for damage.
Q: Is driver's door lock actuator switch connector E-13 in good condition?
YES: Go to Step 5.
NO: Repair or replace it. Refer to Harness Connector Inspection. The input signal from the driver's door lock actuator switch should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.
STEP 5. Check the harness wires between driver's door lock actuator switch connector E-13 and ground.
NOTE: After checking intermediate connector C-211, check the wires. If intermediate connector C-211 is damaged, repair or replace it. Refer to Harness Connector Inspection.
Q: Are the harness wires between driver's door lock actuator switch connector E-13 and ground in good condition?
YES: There is no action to be taken.
NO: Repair them. The input signal from the driver's door lock actuator switch should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.
STEP 6. Check the driver's door lock actuator switch connector E-13 and ETACS-ECU connector C-312 for damage.
YES: Go to Step 7.
NO: Repair or replace them. Refer to Harness Connector Inspection. The input signal from the driver's door lock actuator switch should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.
STEP 7. Check the harness wires between driver's door lock actuator switch connector E-13 and ETACS-ECU connector C-312.
NOTE: After checking intermediate connector C-211, check the wires. If intermediate connector C-211 is damaged, repair or replace it. Refer to Harness Connector Inspection.
Q: Are the harness wires between driver's door lock actuator switch connector E-13 and ETACS-ECU connector C-312 in good condition?
YES: Replace the ETACS-ECU. The input signal from the driver's door lock actuator switch should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.
NO: Repair them. The input signal from the driver's door lock actuator switch should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.
STEP 8. Check the passenger's door lock actuator switch.
Q: Is the passenger's door lock actuator switch in good condition?
YES: Go to Step 9.
NO: Replace it. The input signal from the passenger's door lock actuator switch should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.
STEP 9. Check the passenger's door lock actuator switch ground circuit at passenger's door lock actuator switch connector E-07.
1. Disconnect passenger's door lock actuator switch connector E-07 and measure at the harness side.
2. Measure the resistance between terminal 3 and ground.
Q: Is the resistance less than 2 ohm?
YES: Go to Step 12.
NO: Go to Step 10.
STEP 10. Check passenger a door lock actuator switch connector E-07 for damage.
Q: Is passenger's door lock actuator switch connector E-07 in good condition?
YES: Go to Step 11.
NO: Repair or replace it. Refer to Harness Connector Inspection. The input signal from the passenger's door lock actuator switch should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.
STEP 11. Check the harness wires between passenger's door lock actuator switch connector E-07 and ground.
NOTE: After checking intermediate connector C-213, check the wires. If intermediate connector C-213 is damaged, repair or replace it. Refer to Harness Connector Inspection.
Q: Are the harness wires between passenger's door lock actuator switch connector E-07 and ground in good condition?
YES: There is no action to be taken.
NO: Repair them. The input signal from the passenger's door lock actuator switch should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.
STEP 12. Check the passenger's door lock actuator switch connector E-07 and ETACS-ECU connector C-312 for damage.
YES: Go to Step 13.
NO: Repair or replace them. Refer to Harness Connector Inspection. The input signal from the passenger's door lock actuator switch should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.
STEP 13. Check the harness wires between passenger's door lock actuator switch connector E-07 and ETACS-ECU connector C-312.
NOTE: After checking intermediate connector C-213, check the wires. If intermediate connector C-213 is damaged, repair or replace it. Refer to Harness Connector Inspection.
Q: Are the harness wires between passenger's door lock actuator switch connector E-07 and ETACS-ECU connector C-312 in good condition?
YES: Replace the ETACS-ECU. The input signal from the passenger's door lock actuator switch should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.
NO: Repair them. The input signal from the passengers door lock actuator switch should be able to be checked and the functions, which are described in the "Technical Description (comment)," should work normally.