| 1 |
- Retrieve the advanced keyless system OTC 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 trunk rid 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 (advanced key) inside the passenger compartment.
- Close all doors including trunk rid.
- 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 (advanced 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 (advanced key) battery known to be good.
- Operate the transmitter (advanced key).
- Does the keyless entry system operate properly?
|
Yes |
Replace the transmitter (advanced key). Then go to the next step. |
| No |
Go to the next step. |
| 5 |
- Measure the voltage at the keyless control module terminals 4H, 4J and 4L while operating the request switch.
- Operate driver's side front door request switch (4J): 5.0 V→1.0 V or less
- Operate passenger's side front door request switch (4H): 5.0 V→1.0 V or less
- Operate trunk lid 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 |
- Turn the start knob to LOCK position with mechanical key is not in ignition switch, and the start knob is not pushed.
- Measure the voltage following keyless control module connector.
- Terminal 3O (key reminder switch): below 1.0 V
- Terminal 3N (start knob (push switch)): below 1.0 V
- Terminal 3I (ACC voltage): below 1.0 V
- Terminal 3B (IG1 voltage): below 1.0 V
- Is the signal voltage normal?
|
Yes |
Go to the next step. |
| No |
Inspect and repair for open or short circuit in wiring between the suspect switch and keyless control module, then go to the next step. |
| 7 |
- Simulate the following keyless antenna using the M-MDS:
- ANT_RF# (keyless antenna (RH): terminals 2A and 2B)
- ANT_LF# (keyless antenna (LH): terminals 2C and 2D)
- ANT_BK# (keyless antenna (rear): terminals 2E and 2F)
- ANT_INN1# (keyless antenna (trunk): terminals 2G and 2H)
- ANT_INN2# (keyless antenna (rear No. 2): terminals 21 and 2J)
- ANT_INN3# (keyless antenna (center): terminals 2K and 2L)
- ANT_INN4# (keyless antenna (instrument panel): terminals 3G and 3H)
- Does each antenna operate properly (ON/OFF)?
|
Yes |
Go to the next step. |
| No |
- Inspect for open or short circuit between suspect keyless antenna and keyless control module.
- If the wiring harness is not normal, repair or replace for open or short circuit, then go to the next step.
|
| 8 |
- Measure the pulse profile using an oscilloscope at the keyless control module terminal 3U while operating the transmitter (advanced key).
- Is the pulse profile become long at moment of transmitter operation?
|
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.
|
| 9 |
- Measure the voltage at the keyless control module terminal 1A while operating the request switch.
- Unlock: 1.0 V or less→B+→1.0 V or less
- Is the voltage as above?
|
Yes |
Inspect the keyless control module and replace as necessary. |
| No |
Inspect and repair the wiring harness between keyless control module and door lock actuator.
If the wiring harness is normal, inspect the door lock actuator. |
| 10 |
- Does the keyless entry system operate properly?
|
Yes |
Troubleshooting completed. Explain repairs to the customers |
| No |
Re-inspect the malfunction symptoms, then repeat form Step 1 if malfunction recurs. |