| 1 |
- Retrieve the advanced keyless system DTC using the M-MDS.
- Are there DTC displayed?
|
Yes |
Perform the applicable DTC diagnostic procedures. |
| No |
Go to the next step. |
| 2 |
- Did the customer attempt to operate each front doors and liftgate using the request switch?
|
Yes |
Go to the next step. |
| No |
Inspect the advanced keyless system operations using the request switch. If the advanced keyless system is inoperative, then go to the next step. |
| 3 |
- Prepare the followings:
- Make sure that there is no transmitter (card key) inside the passenger compartment.
- Close all doors including liftgate.
- Remove the key from the steering lock.
- Make sure that start knob is to the LOCK position. (Do not Press the knob)
- Make sure that the transmitter (card key) is within the advanced keyless system operative area (within 80 cm {2.6 ft
} from front door)
- Does the advanced keyless system operate properly?
|
Yes |
The system is normal. Explain the advanced keyless system operation. |
| No |
Go to the next step. |
| 4 |
- Replace with a transmitter (card key) battery known to be good.
- Operate the transmitter (card key).
- Does the keyless entry system operate properly?
|
Yes |
Replace the transmitter (card key). Then go to the next step. |
| No |
Go to the next step. |
| 5 |
- Measure the voltage at the keyless control module terminals 3H, 3J and 3L while operating the request switch.
- Operate driver's side front door request switch (4H): 5.0 V
-->1.0 V or less
- Operate passenger's side front door request switch (4J): 5.0 V
-->1.0 V or less
- Operate liftgate request switch (4L): 5.0 V
-->1.0 V or less
- Is the voltage as above?
|
Yes |
Go to the next step. |
| No |
Inspect and repair the applicable wiring harness as necessary, then go to the next step. |
| 6 |
- Measure the voltage at the following keyless control module terminal while operating the request switch.
- Terminal 1A and 1B for driver's side keyless antenna
- Terminal 1C and 1D for passenger's side keyless antenna
- Terminal 1E and 1F for exterior, rear keyless antenna
- Terminal 1G and 1H for interior, rear (4SD)/interior, RR (5HB, WGN) keyless antenna
- Terminal 1I and 1J for interior, RL keyless antenna (5HB, WGN)
- Terminal 1K and 1L for interior, middle keyless antenna
- Terminal 2G and 25H for interior, front keyless antenna
- Is the voltage within 4.0-6.0 V?
|
Yes |
Go to the next step. |
| No |
Inspect and repair the applicable wiring harness between the keyless antenna and the keyless control module, then go to the next step. |
| 7 |
- Measure the voltage at the keyless control module terminals 2U (keyless receiver) while operating the any request switch.
- Is the voltage as above?
|
Yes |
Go to the next step. |
| No |
- Inspect the wiring harness between the keyless receiver and the keyless control module.
- If the harness is normal, replace the keyless receiver.
- If the harness is malfunctioning, repair the wiring harness.
- Go to the next step.
|
| 8 |
- Measure the voltage at the keyless control module terminals 2R (BCM) while operating the request switch.
- Unlock: 1.0 V or less-->B+-->
1.0 V or less
- Is the voltage as above?
|
Yes |
Inspect and repair the wiring harness between the BCM and the keyless control module, then go to the next step. |
| No |
Inspect the keyless control module. If the keyless control module is malfunctioning, replace the module. |
| 9 |
- Does the keyless entry system operate properly?
|
Yes |
Troubleshooting completed. Explain repairs to the customer. |
| No |
Reinspect the malfunction symptoms, then repeat form Step 1 if malfunction recurs. |