How To Proceed With Troubleshooting

VEHICLE BROUGHT TO WORK SHOP
(See CUSTOMER PROBLEM ANALYSIS CHECK )
CHECK AND CLEAR DTC (See PRE-CHECK )
DTC IS NOT OUTPUT (PROCEED TO MULTIPLEX COMMUNICATION SYSTEM - DIAGNOSTICS )

DTC IS OUTPUT (Go To Step 4)
PROBLEM SYMPTOM CONFIRMATION
SYMPTOM DOES NOT OCCUR (Go to step 5)

SYMPTOM OCCURS (Go to step 6)
SYMPTOM SIMULATION (See PRE-CHECK )
DTC CHECK (See PRE-CHECK )
MALFUNCTION CODE (Go to step 7)

NORMAL CODE (Go to step 8)
DTC CHART (See DIAGNOSTIC TROUBLE CODE CHART )
Go to step 9
PROBLEM SYMPTOMS TABLE
(See CIRCUIT DESCRIPTION - DTC P0500/21 or CIRCUIT DESCRIPTION - DIAGNOSIS CIRCUIT
IDENTIFICATION OF PROBLEM
REPAIR OR REPLACE
CONFIRMATION TEST
END