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
INSPECTION PROCEDURE
Note
If the transponder key ECU assembly or key is replaced, refer to Service Bulletin.
When using the GTS with the engine switch off to troubleshoot:
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 Click here.
| NEXT |
|
CHECK FOR DTC
Check for DTCs Click here.
Tech Tips
Before checking for DTCs, perform the "DTC Output Confirmation Operation" procedure.
| Result | Proceed to |
|---|---|
| DTCs are not output | A |
| DTCs are output | B |
| B |
|
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: Body Electrical / Immobiliser or Main Body / Active Test.
Perform the Active Test 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 | ON: Immobiliser fuel cut on OFF: Immobiliser fuel cut off |
- |
| OK |
|---|
| The item in the Data List indicates "OFF". |
| Result | Proceed to |
|---|---|
| OK (for 1TR-FE, 2TR-FE) | A |
| OK (for 1KD-FTV, 2KD-FTV) | B |
| NG | C |
Tech Tips
*: Go to procedure:
for 1TR-FE (w/ Dual VVT-i): Click here
for 2TR-FE (w/ Secondary Air Injection System): Click here
for 2TR-FE (w/o Secondary Air Injection System): Click here
for 2TR-FE (w/ Dual VVT-i): Click here
for 1KD-FTV (w/ DPF): Click here
for 1KD-FTV (w/o DPF): Click here
for 2KD-FTV: Click here
| B |
|
GO TO ECD SYSTEM* |
| C |
|
CHECK SECURITY INDICATOR LIGHT OPERATION Click here |
| A |
|
GO TO SFI SYSTEM*
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. |
| NG |
|
CHECK SECURITY INDICATOR LIGHT OPERATION Click here |
| OK |
|
GO TO ENGINE DOES NOT START BUT INITIAL COMBUSTION OCCURS Click here
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. |
| 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 | Proceed to |
|---|---|
| Engine can be started | A |
| Engine cannot be started | B |
| B |
|
GO TO ENGINE DOES NOT START BUT INITIAL COMBUSTION OCCURS Click here |
| A |
|
REPLACE KEY
Replace the key.
Note
Key ID code registration is necessary when replacing the key.
Refer to Service Bulletin.
| 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 | Proceed to |
|---|---|
| Engine can be started | A |
| Engine cannot be started (for 1TR-FE, 2TR-FE) | B |
| Engine cannot be started (for 1KD-FTV, 2KD-FTV) | C |
Tech Tips
*: Go to procedure:
for 1TR-FE (w/ Dual VVT-i): Click here
for 2TR-FE (w/ Secondary Air Injection System): Click here
for 2TR-FE (w/o Secondary Air Injection System): Click here
for 2TR-FE (w/ Dual VVT-i): Click here
for 1KD-FTV (w/ DPF): Click here
for 1KD-FTV (w/o DPF): Click here
for 2KD-FTV: Click here
| B |
|
GO TO SFI SYSTEM* |
| C |
|
GO TO ECD SYSTEM* |
| A |
|
END (KEY WAS DEFECTIVE)
REPLACE TRANSPONDER KEY COIL
Temporarily replace the transponder key coil with a new or known good one Click here.
| 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 | Proceed to |
|---|---|
| Engine can be started | A |
| Engine cannot be started | B |
| B |
|
REPLACE TRANSPONDER KEY ECU ASSEMBLY Click here |
| A |
|
END (TRANSPONDER KEY COIL WAS DEFECTIVE)
REPLACE TRANSPONDER KEY ECU ASSEMBLY
Replace the transponder key ECU assembly with a new one.
Tech Tips
Refer to Service Bulletin.
Note
Key ID code registration is necessary when replacing the transponder key ECU assembly.
Refer to Service Bulletin.
| 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 | Proceed to |
|---|---|
| Engine can be started | A |
| Engine cannot be started | B |
| B |
|
REPLACE KEY Click here |
| A |
|
END (TRANSPONDER KEY ECU ASSEMBLY WAS DEFECTIVE)
REPLACE KEY
Temporarily replace the key with a new or known good one.
Note
Key ID code registration is necessary when replacing the key.
Refer to Service Bulletin.
| 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 | Proceed to |
|---|---|
| Engine can be started | A |
| Engine cannot be started (for 1TR-FE, 2TR-FE) | B |
| Engine cannot be started (for 1KD-FTV, 2KD-FTV) | C |
Tech Tips
*: Go to procedure:
for 1TR-FE (w/ Dual VVT-i): Click here
for 2TR-FE (w/ Secondary Air Injection System): Click here
for 2TR-FE (w/o Secondary Air Injection System): Click here
for 2TR-FE (w/ Dual VVT-i): Click here
for 1KD-FTV (w/ DPF): Click here
for 1KD-FTV (w/o DPF): Click here
for 2KD-FTV: Click here
| B |
|
GO TO SFI SYSTEM* |
| C |
|
GO TO ECD SYSTEM* |
| A |
|
END (KEY WAS DEFECTIVE)