THEFT DETERRENT / KEYLESS ENTRY IMMOBILISER SYSTEM(w/o Entry and Start System) Engine does not Start but Initial Combustion Occurs
DESCRIPTION
If the key ID codes of the door control transmitter assembly and transponder key ECU assembly match, the 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:
- ·
Before replacing the transponder key ECU assembly or ECM, refer to the Service Bulletin.
·Make sure that no DTCs are output. If any DTCs are output, proceed to the Diagnostic Trouble Code Chart.
·After completing repairs, confirm that the problem does not recur.
·After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".
PROCEDURE
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Body Electrical or Powertrain / Immobiliser or Engine / Trouble Codes.
Check for DTCs.
- Body Electrical > Immobiliser > Trouble Codes
- 50001 260
- Powertrain > Engine > Trouble Codes
- 50001 372
- Result:
Result Proceed to DTCs are not output (for SFI System) A DTCs are not output (for ECD System) B DTCs are output C
A
B
C
Enter the following menus: Powertrain / Engine / Data List.
Read the Data List according to the display on the GTS.
- Powertrain > Engine > Data List
-
Tester Display Measurement Item Range Normal Condition Diagnostic Note Immobiliser Fuel Cut Status Status of immobiliser system fuel cut ON or OFF OFF: Fuel cut off
ON: Fuel cut on-
- Powertrain > Engine > Data List
-
Tester Display Immobiliser Fuel Cut Status - 50003 372 65
- OK:
OFF is displayed after the engine is started.
- Result:
Proceed to OK NG
OK
NG
Check that the engine starts 5 seconds after the ignition switch was turned to ON.
- OK:
Engine starts normally.
- Result:
Proceed to OK NG
OK
NG
Using an oscilloscope, check the waveform.
| *a | Component with harness connected
(Transponder Key ECU Assembly) |
*b | Approximately 160 ms. |
| *c | Approximately 270 ms. | *d | Approximately 40 ms. |
| *e | Approximately 60 ms. | *f | IMO Waveform |
| *g | IMI Waveform | *h | Waveform A |
| *i | Waveform B | *j | Waveform C |
| *k | Waveform A (detail) | - | - |
- NOTICE:
-
The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
- Measurement Condition:
Tester Connection Condition Tool Setting Specified Condition N66-10 (EFII) - Body ground Within 3 seconds of engine start or within 3 seconds of ignition switch turned to ON after cable disconnected and reconnected to battery 2 V/DIV., 500 ms./DIV. Pulse generation
(See waveform B)N66-11 (EFIO) - Body ground Within 3 seconds of engine start or within 3 seconds of ignition switch turned to ON after cable disconnected and reconnected to battery 2 V/DIV., 500 ms./DIV. Pulse generation
(See waveform A and C)
- Result:
Result Proceed to Normal waveform A Waveform A is not output, or has abnormal wavelength or shape B Waveform B is not output, or has abnormal wavelength or shape C Waveform C is not output, or has abnormal wavelength or shape D
A
B
C
for 7GR-FKS:
for 1GD-FTV:
D
Register the communication ID between the transponder key ECU assembly and ECM.
- HINT:
-
Refer to Service Bulletin.
- Result:
Proceed to NEXT
NEXT
Check that the engine starts 5 seconds after the ignition switch was turned to ON.
- OK:
Engine starts normally.
- Result:
Proceed to OK NG
OK
NG
Disconnect the N66 transponder key ECU assembly connector.
for 7GR-FKS:
Disconnect the A1 ECM connector.
for 1GD-FTV:
Disconnect the A2 ECM connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
for 7GR-FKS Tester Connection Condition Specified Condition N66-10 (EFII) - A1-9 (IMO) Always Below 1 Ω N66-11 (EFIO) - A1-8 (IMI) Always Below 1 Ω N66-10 (EFII) or A1-9 (IMO) - Other terminals and body ground Always 10 kΩ or higher N66-11 (EFIO) or A1-8 (IMI) - Other terminals and body ground Always 10 kΩ or higher
for 1GD-FTV Tester Connection Condition Specified Condition N66-10 (EFII) - A2-17 (IMO) Always Below 1 Ω N66-11 (EFIO) - A2-16 (IMI) Always Below 1 Ω N66-10 (EFII) or A2-17 (IMO) - Other terminals and body ground Always 10 kΩ or higher N66-11 (EFIO) or A2-16 (IMI) - Other terminals and body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
Replace the transponder key ECU assembly with a new one.
- HINT:
-
Refer to Service Bulletin.
- Result:
Proceed to NEXT
NEXT
Register the recognition codes to the ECUs.
- HINT:
-
Refer to Service Bulletin.
- Result:
Proceed to NEXT
NEXT
Register the ECU communication ID codes.
- HINT:
-
Refer to Service Bulletin.
- Result:
Proceed to NEXT
NEXT
Check that the engine starts.
- OK:
Engine starts normally.
- Result:
Proceed to OK NG (for 7GR-FKS) NG (for 1GD-FTV (w/ EGR Cooler)) NG (for 1GD-FTV (w/ DPF)) NG (for 1GD-FTV (w/o EGR Cooler)) NG (for 1GD-FTV (for Water Cooled Type Intercooler)) NG (for 1GD-FTV (w/ Urea SCR System)) NG (for 1GD-FTV (w/ Exhaust Gas Temperature Sensor for EGR))
OK
NG (for 7GR-FKS)
NG (for 1GD-FTV (w/ EGR Cooler))
NG (for 1GD-FTV (w/ DPF))
NG (for 1GD-FTV (w/o EGR Cooler))
NG (for 1GD-FTV (for Water Cooled Type Intercooler))
NG (for 1GD-FTV (w/ Urea SCR System))
NG (for 1GD-FTV (w/ Exhaust Gas Temperature Sensor for EGR))