How To Proceed With Troubleshooting

PRE-COLLISION: PRE-COLLISION SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

HOW TO PROCEED WITH TROUBLESHOOTING
HINT:
- Use these procedures to troubleshoot the pre-collision system.
- The Techstream should be used in steps 2, 3, 4 and 6.

1. VEHICLE BROUGHT TO WORKSHOP
NEXT -- Continue to next step.
2. CHECK MULTIPLEX COMMUNICATION SYSTEM
(a) Use the Techstream to check if the multiplex communication system is functioning normally.

Result:





B -- GO TO MULTIPLEX COMMUNICATION SYSTEM
A -- Continue to next step.
3. CHECK CAN COMMUNICATION SYSTEM
(a) Use the Techstream to check for normally functioning of CAN communication system.
(1) Perform bus check (communication malfunctioning DTC).
(2) Perform bus check (communication Bus check).

Result:





B -- GO TO CAN COMMUNICATION SYSTEM
A -- Continue to next step.
4. CHECK FOR DTC
(a) Check for DTCs.
(1) Record the DTCs.
(b) Clear the DTCs.
(c) Recheck for DTCs.
(1) Attempt to duplicate the malfunction and check if the DTCs are output again Pre-Collision System.

Result:





B -- GO TO DTC CHART
C -- SYMPTOM SIMULATION
A -- Continue to next step.
5. PROBLEM SYMPTOMS TABLE
(a) If the result is not listed on the problem symptoms table, proceed to A.
(b) If the result is listed on the problem symptoms table, proceed to B.
B -- GO TO STEP 7
A -- Continue to next step.
6. OVERALL ANALYSIS AND TROUBLESHOOTING
(a) DATA LIST/ACTIVE TEST Pre-Collision System
(b) Terminals of ECU Pre-Collision System
NEXT -- Continue to next step.
7. ADJUST, REPAIR OR REPLACE
NEXT -- Continue to next step.
8. CONFIRMATION TEST
NEXT -- END