How To Proceed With Troubleshooting
HINT:
Use the following procedure to troubleshoot the engine immobilizer system.
The intelligent tester should be used in steps 4, 5 and 7.
- VEHICLE BROUGHT TO WORKSHOP
- GO TO NEXT STEP
- CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK
- GO TO NEXT STEP
- CRANK ENGINE FOR MORE THAN 10 SECONDS
- GO TO NEXT STEP
- CHECK FOR DTCS
- Check for DTCs and note any codes that are output.
- Delete the DTC.
- Simulate the malfunction symptoms based on the DTCs recorded in step (a) to check if the same DTCs are output again.
- If the DTC does not reoccur, proceed to A.
- If any DTC of the SFI system reoccurs, proceed to B.
- If any DTC of the engine immobilizer system reoccurs, proceed to C.
B: Go to SFI SYSTEM
C: Go to step 8
A: GO TO NEXT STEP
- READ VALUE OF INTELLIGENT TESTER
- Connect the intelligent tester to the Controller Area Network Vehicle Interface Module (CAN VIM). Then connect the CAN VIM to the DLC3.
- Turn the ignition switch ON and push the intelligent tester main switch ON.
- Read the DATA LIST according to the display on the tester.DATA LIST
Item Measurement Item/ Display (Range) Normal Condition Diagnostic Note KEY SW Unlock warning switch signal /ON or OFF ON: Key is in ignition key cylinder
OFF: No key is in ignition key cylinder- OK: ON (Key is in ignition key cylinder)
NG: Go to DTC B2780
OK: GO TO NEXT STEP
- PROBLEM SYMPTOMS TABLE
- If the fault is not listed in the problem symptoms table, proceed to A.
- If the fault is listed in the problem symptoms table, proceed to B.
B: Go to step 8
A: GO TO NEXT STEP
- OVERALL ANALYSIS AND TROUBLESHOOTING
- DATA LIST / ACTIVE TEST
- Inspection with the intelligent tester (DATA LIST).
- Inspection with the intelligent tester (ACTIVE TEST).
- See TERMINALS OF ECU
- DATA LIST / ACTIVE TEST
- ADJUST, REPAIR OR REPLACE
- GO TO NEXT STEP
- CONFIRMATION TEST
- END