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 ECU Assembly |
| *b | Transponder Key Coil |
CAUTION / NOTICE / HINT
Note
If the transponder key ECU assembly or key is replaced, refer to the Service Bulletin.
When using the GTS with the vehicle ignition switch off, connect the GTS to the vehicle and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select the Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Immobiliser. While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.
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 | ||||
|---|---|---|---|---|
|
| DTCs are not output (for Diesel) |
|
GO TO STEP 4 Click here |
| DTCs are output |
|
GO TO DIAGNOSTIC TROUBLE CODE CHART Click here |
| DTCs are not output (for Gasoline) |
|
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: Body Electrical / Engine and ECT / 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 | OFF/ON | - | - |
| Tester Display |
|---|
| Immobiliser Fuel Cut |
| OK |
|---|
| OFF is displayed after the engine is started. |
| Result | |||||
|---|---|---|---|---|---|
|
| OK (for 2AR-FE) |
|
GO TO SFI SYSTEM Click here |
| OK (for 3ZR-FAE) |
|
GO TO SFI SYSTEM Click here |
| OK (for 3ZR-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 | |||
|---|---|---|---|
|
| Engine can be started |
|
GO TO STEP 11 Click here |
| Engine cannot be started |
|
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 | |||
|---|---|---|---|
|
| Engine can be started |
|
END (TRANSPONDER KEY COIL WAS DEFECTIVE) |
| Engine cannot be started |
|
REPLACE TRANSPONDER KEY ECU ASSEMBLY
Replace the transponder key ECU assembly with a new one.
Tech Tips
Refer to the Service Bulletin.
Note
Key ID code registration is necessary when replacing the transponder key ECU assembly.
Refer to the 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 | |||
|---|---|---|---|
|
| Engine can be started |
|
END (TRANSPONDER KEY ECU ASSEMBLY WAS DEFECTIVE) |
| Engine cannot be started |
|
REPLACE KEY
Replace the key.
Note
Key ID code registration is necessary when replacing the key.
Refer to the 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 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
| Engine can be started |
|
END (KEY WAS DEFECTIVE) |
| Engine cannot be started (for 2AR-FE) |
|
GO TO SFI SYSTEM Click here |
| Engine cannot be started (for 3ZR-FAE) |
|
GO TO SFI SYSTEM Click here |
| Engine cannot be started (for 3ZR-FE) |
|
GO TO SFI SYSTEM Click here |
| Engine cannot be started (for 1AD-FTV) |
|
GO TO ECD SYSTEM Click here |
| Engine cannot be started (for 2AD-CCo) |
|
GO TO ECD SYSTEM Click here |
| Engine cannot be started (for 2AD-DPF) |
|
GO TO ECD SYSTEM Click here |
| Engine cannot be started (for 2AD-FHV) |
|
GO TO ECD SYSTEM Click here |