Symptom Simulation

SYMPTOM SIMULATION

HINT: The most difficult case in troubleshooting is when no symptoms occur. In such cases, a thorough customer problem analysis must be carried out. Then the same or similar conditions and environment in which the problem occurred in the customer's vehicle should be simulated. No matter how experienced or skilled a technician may be, if troubleshooting proceeds without confirmation of the problem symptoms, something important is likely to be overlooked and a wrong guess may be made at some point in the repair operation.

This leads to a standstill in troubleshooting.




a. Simulation method: When vibration seems to be the major cause.

HINT: Perform this method only during the primary check period (for approximately 6 seconds after the ignition switch is turned to the ON position).

1. Use your finger to slightly vibrate the part of the sensor considered to be the problem cause, and check whether the malfunction recurs.

HINT: Wiggling the relays too strongly may result in open relays.

2. Gently wiggle the connector.
3. Gently wiggle wire harness.
The connector joint and the pivot of the vibration are the areas that should be checked most thoroughly.

b. Specific simulation method for DTC B1795: Repetitively turn the ignition switch from the LOCK to ON position 50 times in a row (LOCK to ON to LOCK should be counted as once).