DESCRIPTION
When a key is inserted into the ignition key cylinder, the transponder key coil receives the key ID code and sends it to the transponder key ECU assembly.
If an error in communication between the transponder key coil and transponder key ECU assembly occurs, this symptom may occur.
WIRING DIAGRAM
| *a | Transponder Key Coil |
| *b | Transponder Key ECU Assembly |
CAUTION / NOTICE / HINT
Note
If the transponder key ECU assembly or key is replaced, refer to Service Bulletin.
PROCEDURE
CLEAR DTC
Clear the DTCs.
| Result | ||
|---|---|---|
|
| NEXT |
|
CHECK FOR DTC
Check for DTCs.
Tech Tips
Before checking for DTCs, perform the "DTC Output Confirmation Operation" procedure.
| Result | ||||||||
|---|---|---|---|---|---|---|---|---|
|
| B |
|
GO TO STEP 4 Click here |
| C |
|
GO TO DIAGNOSTIC TROUBLE CODE CHART Click here |
| A |
|
READ VALUE USING GTS (IMMOBILISER FUEL CUT)
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Data List.
Read the Data List according to the display on the GTS.
| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Immobiliser Fuel Cut | Status of immobiliser system fuel cut | ON or OFF | - | - |
| Tester Display |
|---|
| Immobiliser Fuel Cut |
| OK |
|---|
| OFF is displayed after the engine is started. |
| Result | |||||
|---|---|---|---|---|---|
|
| OK (1TR-FE) |
|
GO TO SFI SYSTEM Click here |
| OK (2TR-FE) |
|
GO TO SFI SYSTEM Click here |
| OK (1GR-FE) |
|
GO TO SFI SYSTEM Click here |
| NG |
|
CHECK SECURITY INDICATOR LIGHT OPERATION
Check that the security indicator light turns off when a registered key is inserted into the ignition key cylinder.
| OK |
|---|
| Security indicator light turns off. |
| Result | |||
|---|---|---|---|
|
| OK |
|
GO TO ENGINE DOES NOT START BUT INITIAL COMBUSTION OCCURS Click here |
| NG |
|
CHECK SECURITY INDICATOR LIGHT OPERATION
Check that the security indicator light turns off when another registered key is inserted into the ignition key cylinder.
| OK |
|---|
| Security indicator light turns off. |
| Result | |||
|---|---|---|---|
|
| NG |
|
REPLACE TRANSPONDER KEY COIL Click here |
| OK |
|
CHECK WHETHER ENGINE STARTS
Using another registered key, turn the ignition switch to ON.
Check that the engine starts 5 seconds after the ignition switch was turned to ON.
| OK |
|---|
| Engine starts normally. |
| Result | |||
|---|---|---|---|
|
| OK |
|
GO TO STEP 13 Click here |
| NG |
|
GO TO ENGINE DOES NOT START BUT INITIAL COMBUSTION OCCURS Click here |
REPLACE TRANSPONDER KEY COIL
Replace the transponder key coil.
| Result | ||
|---|---|---|
|
| NEXT |
|
CHECK WHETHER ENGINE STARTS
Using a registered key, turn the ignition switch to ON.
Check that the engine starts 5 seconds after the ignition switch was turned to ON.
| OK |
|---|
| Engine starts normally. |
| Result | ||||||
|---|---|---|---|---|---|---|
|
| A |
|
END (TRANSPONDER KEY COIL WAS DEFECTIVE) |
| B |
|
REPLACE TRANSPONDER KEY ECU ASSEMBLY
Replace the transponder key ECU assembly with a new one.
Tech Tips
Refer to Service Bulletin.
| Result | ||
|---|---|---|
|
| NEXT |
|
REGISTER KEY
Register the key.
Tech Tips
Refer to Service Bulletin.
| Result | ||
|---|---|---|
|
| NEXT |
|
REGISTER ECU COMMUNICATION ID
Register the ECU communication ID.
Tech Tips
Refer to Service Bulletin.
| Result | ||
|---|---|---|
|
| NEXT |
|
CHECK WHETHER ENGINE STARTS
Using a registered key, turn the ignition switch to ON.
Check that the engine starts 5 seconds after the ignition switch was turned to ON.
| OK |
|---|
| Engine starts normally. |
| Result | |||
|---|---|---|---|
|
| OK |
|
END (TRANSPONDER KEY ECU ASSEMBLY WAS DEFECTIVE) |
| NG |
|
REPLACE KEY
Replace the key.
Note
Key ID code registration is necessary when replacing the key.
Refer to Service Bulletin.
| Result | ||
|---|---|---|
|
| NEXT |
|
CHECK WHETHER ENGINE STARTS
Using a registered key, turn the ignition switch to ON.
Check that the engine starts 5 seconds after the ignition switch was turned to ON.
| OK |
|---|
| Engine starts normally. |
| Result | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| A |
|
END (KEY WAS DEFECTIVE) |
| B |
|
GO TO SFI SYSTEM Click here |
| C |
|
GO TO SFI SYSTEM Click here |
| D |
|
GO TO ECD SYSTEM Click here |
| E |
|
GO TO ECD SYSTEM Click here |
| F |
|
GO TO ECD SYSTEM Click here |
| G |
|
GO TO ECD SYSTEM Click here |
| H |
|
GO TO ECD SYSTEM Click here |
| I |
|
GO TO ECD SYSTEM Click here |
| J |
|
GO TO SFI SYSTEM Click here |
| K |
|
GO TO ECD SYSTEM Click here |