Diesel Data: Automotive Repair

How To Proceed With Troubleshooting








THEFT DETERRENT: THEFT DETERRENT SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

HOW TO PROCEED WITH TROUBLESHOOTING
HINT:
- Use this procedure to troubleshoot the theft deterrent system.
- The Techstream should be used in steps 3 and 5.

1. VEHICLE BROUGHT TO WORKSHOP
NEXT -- Continue to next step.
2. INSPECT BATTERY VOLTAGE
Standard voltage:
11 to 14 V
HINT: If the voltage is below 11 V, recharge or replace the battery before proceeding.

NEXT -- Continue to next step.
3. CHECK FOR DTC
(a) Check for DTCs and note any codes that are output.
(b) Delete the DTCs.
(c) Check whether the same DTCs recur by simulating the conditions indicated by the DTCs noted in step (a) above.
(1) If no DTCs recur, proceed to A.
(2) If the same DTCs recur, proceed to B.
B -- Go to step 6
A -- Continue to next step.
4. PROBLEM SYMPTOMS TABLE
(a) If the fault is not listed in the problem symptoms table, proceed to A.
(b) If the fault is listed in the problem symptoms table, proceed to B.
B -- Go to step 6
A -- Continue to next step.
5. OVERALL ANALYSIS AND TROUBLESHOOTING
(a) Data list/Active test Theft Deterrent System
(b) Terminals of ECU Theft Deterrent System
(c) System Description Theft Deterrent System
NEXT -- Continue to next step.
6. ADJUST, REPAIR OR REPLACE
NEXT -- Continue to next step.
7. CONFIRMATION TEST
NEXT -- END