In some cases, wireless door lock control functions are normal but the hazard warning light answer-back function does not operate. In such cases, hazard warning light signal outputs from the main body ECU (multiplex network body ECU) may be malfunctioning.
The wireless door lock control system uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the wireless door lock control system after confirming that the communication system is functioning properly.
Select the setting by referring to the table below.
| Tester Display | Description | Default | Setting | ECU |
|---|---|---|---|---|
| Hazard Answer Back Function | Function that flashes the hazard warning lights once when the doors are locked by wireless operation and twice when the doors are unlocked by wireless operation | Enable | $00:Disable,$01:Enable | Main body ECU (Multiplex network body ECU) |
| Result | Proceed to |
|---|---|
| Hazard Answer Back is Enable | A |
| Hazard Answer Back is Disable | B |
A
B
Check the wireless door lock control function using the door control transmitter assembly.
| Result | Proceed to |
|---|---|
| Wireless door lock/unlock operates properly | A |
| Wireless door lock/unlock does not operate properly | B |
A
B
Read the Data List according to the display on the GTS.
| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| FR Door Lock Position Switch Status | Front door RH unlock detection switch signal | Lock or Unlock | Lock: Front door RH locked
Unlock: Front door RH unlocked |
- |
| FL Door Lock Position Switch Status | Front door LH unlock detection switch signal | Lock or Unlock | Lock: Front door LH locked
Unlock: Front door LH unlocked |
- |
| RR Door Lock Position Switch Status | Rear door RH unlock detection switch signal | Lock or Unlock | Lock: Rear door RH locked
Unlock: Rear door RH unlocked |
- |
| RL Door Lock Position Switch Status | Rear door LH unlock detection switch signal | Lock or Unlock | Lock: Rear door LH locked
Unlock: Rear door LH unlocked |
- |
| Tester Display |
|---|
| FR Door Lock Position Switch Status |
| FL Door Lock Position Switch Status |
| RR Door Lock Position Switch Status |
| RL Door Lock Position Switch Status |
The GTS display changes correctly in response to the lock/unlock operation.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Check that the hazard warning lights blink when the hazard warning signal switch is pressed.
Hazard warning lights blink.
| Proceed to |
|---|
| OK |
| NG |
OK
NG