How To Proceed With Troubleshooting

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

HINT
* Use the following procedure to troubleshoot the pre-collision system.
* The Techstream should be used in steps 3, 4, 5 and 7.

1. VEHICLE BROUGHT TO WORKSHOP

NEXT -- Continue to next step.

2. INSPECT BATTERY VOLTAGE

Standard voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.

NG -- CHARGE OR REPLACE BATTERY
OK -- Continue to next step.

3. CHECK MULTIPLEX COMMUNICATION SYSTEM

(a) Use the Techstream to check if the multiplex communication system (MPX) is functioning normally.

Result





B -- GO TO MULTIPLEX COMMUNICATION SYSTEM How To Proceed With Troubleshooting
A -- Continue to next step.

4. CHECK CAN COMMUNICATION SYSTEM

(a) Use the Techstream to check if the CAN communication system is functioning normally.

Result





B -- GO TO CAN COMMUNICATION SYSTEM How to Proceed With Troubleshooting
A -- Continue to next step.

5. 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 Pre-Collision System

C -- GO TO SYMPTOM SIMULATION How To Proceed With Troubleshooting
A -- Continue to next step.

6. PROBLEM SYMPTOMS TABLE

Refer to Problem Symptoms Table Pre-Collision System.

Result





B -- Go to step 7
A -- Continue to next step.

7. PERFORM TROUBLESHOOTING BASED ON MALFUNCTION SYMPTOM

(a) Data List / Active Test Pre-Collision System

(b) Terminals of ECU Pre-Collision System

NEXT -- Continue to next step.

8. ADJUST, REPAIR OR REPLACE

NEXT -- Continue to next step.

9. CONFIRMATION TEST

NEXT -- END