DESCRIPTION
If the key ID codes of the key and transponder key ECU assembly match, the engine immobiliser system is unset and the engine start permission signal is sent to the ECM. When the ID codes of the transponder key ECU assembly and ECM match, the engine starts.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
If the transponder key ECU assembly or ECM is replaced, refer to Registration (See page ).
PROCEDURE
1. |
CLEAR DTC |
(a) Clear the DTCs (See page ).
|
2. |
CHECK FOR DTC |
(a) Check for DTCs (See page ).
Result
Result |
Proceed to |
---|---|
DTCs are not output |
A |
DTCs are output |
B |
B |
GO TO DIAGNOSTIC TROUBLE CODE CHART |
|
3. |
READ VALUE USING TECHSTREAM (IMMOBILISER FUEL CUT) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine and ECT or Engine / Data List.
(e) Read the Data List according to the display on the Techstream.
Engine and ECT (for 2TR-FE)
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
Immobiliser Fuel Cut |
Status of immobiliser fuel cut / ON or OFF |
- |
- |
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
Immobiliser Fuel Cut |
Status of immobiliser fuel cut / ON or OFF |
- |
- |
OK:
OFF is displayed after the ignition switch is turned ON.
Result
Result |
Proceed to |
---|---|
NG |
A |
OK (for 2TR-FE) |
B |
OK (for 2GR-FKS) |
C |
B |
GO TO SFI SYSTEM |
C |
GO TO SFI SYSTEM |
|
4. |
CHECK WHETHER ENGINE STARTS |
(a) Using a registered key, turn the ignition switch to ON.
(b) Check that the engine starts 5 seconds after the ignition switch was turned to ON.
OK:
Engine starts normally.
Result
Result |
Proceed to |
---|---|
NG (for 2TR-FE) |
A |
NG (for 2GR-FKS) |
B |
OK |
C |
B |
GO TO STEP 15 |
C |
USE SIMULATION METHOD TO CHECK |
|
5. |
CHECK ECM (TERMINAL IMI) |
(a) Using an oscilloscope, check the waveform.
Text in Illustration
*A |
for Automatic Transmission |
*B |
for Manual Transmission |
*a |
Component with harness connected (ECM) |
*b |
Waveform 1 |
*c |
Waveform 2 |
*d |
Approximately 160 ms |
*e |
Approximately 270 ms |
- |
- |
Measurement Condition:
Tester Connection |
Condition |
Tool Setting |
Specified Condition |
---|---|---|---|
E20-10 (IMI) - Body ground |
Within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal |
2 V/DIV., 500 ms./DIV. |
Pulse generation (See waveform) |
Result |
Proceed to |
---|---|
Normal waveform |
A |
Waveform 1 not output, or has abnormal wavelength or shape |
B |
Waveform 2 not output, or has abnormal wavelength or shape |
C |
B |
GO TO STEP 12 |
C |
GO TO STEP 13 |
|
6. |
CHECK ECM (TERMINAL IMO) |
(a) Using an oscilloscope, check the waveform.
Text in Illustration
*A |
for Automatic Transmission |
*B |
for Manual Transmission |
*a |
Component with harness connected (ECM) |
*b |
Waveform |
*c |
Approximately 160 ms |
*d |
Approximately 270 ms |
Measurement Condition:
Tester Connection |
Condition |
Tool Setting |
Specified Condition |
---|---|---|---|
E20-9 (IMO) - Body ground |
Within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal |
2 V/DIV., 500 ms./DIV. |
Pulse generation (See waveform) |
Result |
Proceed to |
---|---|
Normal waveform |
A |
Waveform not output, or has abnormal wavelength or shape |
B |
B |
GO TO STEP 9 |
|
7. |
REGISTER ECU COMMUNICATION ID |
(a) Register the communication ID between the transponder key ECU assembly and ECM (See page ).
|
8. |
CHECK WHETHER ENGINE STARTS |
(a) Using a registered key, turn the ignition switch to ON.
(b) Check that the engine starts 5 seconds after the ignition switch was turned to ON.
OK:
Engine starts normally.
OK |
END (REGISTERED COMMUNICATION ID WAS DEFECTIVE) |
NG |
GO TO STEP 13 |
9. |
REPLACE ECM |
(a) Temporarily replace the ECM with a new one (See page ).
|
10. |
REGISTER ECU COMMUNICATION ID |
(a) Register the ECU communication ID (See page ).
|
11. |
CHECK WHETHER ENGINE STARTS |
(a) Using a registered key, turn the ignition switch to ON.
(b) Check that the engine starts 5 seconds after the ignition switch was turned to ON.
OK:
Engine starts normally.
OK |
END (ECM WAS DEFECTIVE) |
NG |
GO TO SFI SYSTEM |
12. |
CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU ASSEMBLY - ECM) |
(a) Disconnect the T10 transponder key ECU assembly connector.
(b) Disconnect the E20 ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
T10-13 (EFIO) - E20-10 (IMI) |
Always |
Below 1 Ω |
T10-13 (EFIO) or E20-10 (IMI) - Body ground |
Always |
10 kΩ or higher |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
13. |
REPLACE TRANSPONDER KEY ECU ASSEMBLY |
(a) Replace the transponder key ECU assembly with a new one (See page ).
NOTICE:
Key ID code registration is necessary when replacing the transponder key ECU assembly, refer to Registration (See page ).
|
14. |
CHECK WHETHER ENGINE STARTS |
(a) Using a registered key, turn the ignition switch to ON.
(b) Check that the engine starts 5 seconds after the ignition switch was turned to ON.
OK:
Engine starts normally.
OK |
END (TRANSPONDER KEY ECU ASSEMBLY WAS DEFECTIVE) |
NG |
GO TO SFI SYSTEM |
15. |
CHECK ECM (TERMINAL IMI) |
(a) Using an oscilloscope, check the waveform.
Text in Illustration
*a |
Component with harness connected (ECM) |
*b |
Waveform 1 |
*c |
Waveform 2 |
*d |
Approximately 160 ms |
*e |
Approximately 270 ms |
- |
- |
Measurement Condition:
Tester Connection |
Condition |
Tool Setting |
Specified Condition |
---|---|---|---|
E14-8 (IMI) - Body ground |
Within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal |
2 V/DIV., 500 ms./DIV. |
Pulse generation (See waveform) |
Result |
Proceed to |
---|---|
Normal waveform |
A |
Waveform 1 not output, or has abnormal wavelength or shape |
B |
Waveform 2 not output, or has abnormal wavelength or shape |
C |
B |
GO TO STEP 22 |
C |
GO TO STEP 23 |
|
16. |
CHECK ECM (TERMINAL IMO) |
(a) Using an oscilloscope, check the waveform.
Text in Illustration
*a |
Component with harness connected (ECM) |
*b |
Waveform |
*c |
Approximately 160 ms |
*d |
Approximately 270 ms |
Measurement Condition:
Tester Connection |
Condition |
Tool Setting |
Specified Condition |
---|---|---|---|
E14-9 (IMO) - Body ground |
Within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal |
2 V/DIV., 500 ms./DIV. |
Pulse generation (See waveform) |
Result |
Proceed to |
---|---|
Normal waveform |
A |
Waveform not output, or has abnormal wavelength or shape |
B |
B |
GO TO STEP 19 |
|
17. |
REGISTER ECU COMMUNICATION ID |
(a) Register the communication ID between the transponder key ECU assembly and ECM (See page ).
|
18. |
CHECK WHETHER ENGINE STARTS |
(a) Using a registered key, turn the ignition switch to ON.
(b) Check that the engine starts 5 seconds after the ignition switch was turned to ON.
OK:
Engine starts normally.
OK |
END (REGISTERED COMMUNICATION ID WAS DEFECTIVE) |
NG |
GO TO STEP 23 |
19. |
REPLACE ECM |
(a) Temporarily replace the ECM with a new one (See page ).
|
20. |
REGISTER ECU COMMUNICATION ID |
(a) Register the ECU communication ID (See page ).
|
21. |
CHECK WHETHER ENGINE STARTS |
(a) Using a registered key, turn the ignition switch to ON.
(b) Check that the engine starts 5 seconds after the ignition switch was turned to ON.
OK:
Engine starts normally.
OK |
END (ECM WAS DEFECTIVE) |
NG |
GO TO SFI SYSTEM |
22. |
CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU ASSEMBLY - ECM) |
(a) Disconnect the T10 transponder key ECU assembly connector.
(b) Disconnect the E14 ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
T10-13 (EFIO) - E14-10 (IMI) |
Always |
Below 1 Ω |
T10-13 (EFIO) or E14-10 (IMI) - Body ground |
Always |
10 kΩ or higher |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
23. |
REPLACE TRANSPONDER KEY ECU ASSEMBLY |
(a) Replace the transponder key ECU assembly with a new one (See page ).
NOTICE:
Key ID code registration is necessary when replacing the transponder key ECU assembly, refer to Registration (See page ).
|
24. |
CHECK WHETHER ENGINE STARTS |
(a) Using a registered key, turn the ignition switch to ON.
(b) Check that the engine starts 5 seconds after the ignition switch was turned to ON.
OK:
Engine starts normally.
OK |
END (TRANSPONDER KEY ECU ASSEMBLY WAS DEFECTIVE) |
NG |
GO TO SFI SYSTEM |
Automatic Disconnecting Differential Motor Limit Switch Circuit (P17A4)
DESCRIPTION
When the A.D.D. actuator switches between 2WD and 4WD, the DL1 and DL2 terminals
of the limit switch and ADD terminal of the A.D.D. position switch change to one
of the following ON/OFF combinations listed in the table below.
Terminal
In 2WD
Switchi ...
Installation
INSTALLATION
PROCEDURE
1. INSTALL REAR AXLE SHAFT OIL SEAL
(a) Using SST and a hammer, install a new oil seal.
SST: 09950-60020
09951-00770
SST: 09950-70010
09951-07150
2. INSTALL REAR AXLE SHAFT WITH BACKING PLATE
(a) Install a new O-ring.
(b) Install the rear axle shaft with backing ...
Daytime Running Light Relay Circuit
DESCRIPTION
The main body ECU (multiplex network body ECU) controls the daytime running lights.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing
the following inspection procedure.
If the main body ECU (mult ...