10C
Immobilizer Control System Check
Vehicle Not Equipped with Immobilizer Indicator Lamp
Step Action YES NO
1
1) Make sure that diagnosis switch terminal in monitor coupler is not grounded by service wire.
2) Check malfunction indicator lamp while ignition switch is ON (but without starting engine).
Does malfunction indicator lamp flash?
Go to Step 3.
If malfunction indicator lamp remains ON, go to Step 2. If malfunction indicator lamp remains OFF, go to Malfunction Indicator Lamp (MIL) Check:M13A without VVT .
2
1) Using service wire (2), ground diagnosis switch terminal in monitor coupler (1).
Does malfunction indicator lamp flash?
Immobilizer control system is in good condition.
Go to Malfunction Indicator Lamp (MIL) Check:M13A without VVT .
3
Does malfunction indicator lamp flash?
Go to Step 4.
Go to Malfunction Indicator Lamp (MIL) Check:M13A without VVT .
4
1) Check DTC stored in immobilizer control module referring to “Immobilizer Control Module” under DTC Check:M13A Model .
Is there any DTC(s)?
Go to flow table for DTC No.
Go to Step 5.
5
1) Check DTC stored in ECM referring to “ECM” under DTC Check:M13A Model .
Is there any DTC(s)?
Go to flow table for DTC No.
Substitute a known-good ECM and recheck. See NOTE.
NOTE:
After replacing with a known-good ECM, register ECM/Immobilizer Control Module code in ECM by performing procedure described in Procedure after Immobilizer Control Module Replacement:M13A Model .
Vehicle Equipped with Immobilizer Indicator Lamp
Step Action YES NO
1
1) Check immobilizer indicator lamp while ignition switch is ON (but without starting engine).
Does immobilizer indicator lamp flash?
Go to Step 3.
If immobilizer indicator lamp remains ON, go to Step 2. If immobilizer indicator lamp remains OFF, go to Immobilizer Indicator Lamp Check for Vehicle Equipped with Immobilizer Indicator Lamp (Immobilizer Indicator Lamp Does Not Light at Ignition Switch ON):M13A Model or Immobilizer Indicator Lamp Check for Vehicle Equipped with Immobilizer Indicator Lamp (Immobilizer Indicator Lamp Remains on after Engine Starts):M13A Model .
2
1) Check DTC stored in ECM referring to “ECM” under DTC Check:M13A Model .
Is there any DTC(s)?
Go to Immobilizer Indicator Lamp Check for Vehicle Equipped with Immobilizer Indicator Lamp (Immobilizer Indicator Lamp Does Not Light at Ignition Switch ON):M13A Model or Immobilizer Indicator Lamp Check for Vehicle Equipped with Immobilizer Indicator Lamp (Immobilizer Indicator Lamp Remains on after Engine Starts):M13A Model .
Immobilizer control system is in good condition.
3
1) Check DTC stored in immobilizer control module referring to “Immobilizer Control Module” under DTC Check:M13A Model .
Is there any DTC(s)?
Go to flow table for DTC No.
Go to Step 4.
4
1) Check DTC stored in ECM referring to “ECM” under DTC Check:M13A Model .
Is there any DTC(s) for immobilizer control system?
Go to flow table for DTC No.
Substitute a known-good ECM and recheck. See NOTE.
NOTE:
After replacing with a known-good ECM, register ECM/Immobilizer Control Module code in ECM by performing procedure described in Procedure after Immobilizer Control Module Replacement:M13A Model .