Shift Interlock System: Diagnosis Chevrolet TrailBlazer I рестайлинг

Diagnostic Starting Point - Automatic Transmission Shift Lock Control

Begin the system diagnosis with Diagnostic System Check - Vehicle . The Diagnostic System Check - Vehicle will provide the following information

1. The identification of the control modules which command the system
2. The ability of the control modules to communicate through the serial data circuit
3. The identification of any stored DTCs and their status

The use of the Diagnostic System Check - Vehicle will identify the correct procedure for diagnosing the system and where the procedure is located.

Symptoms - Automatic Transmission Shift Lock Control

Visual/Physical Inspection

1. Inspect for aftermarket devices which could affect the operation of the automatic transmission shift lock control system. Refer to «Checking Aftermarket Accessories»(ref-277749-S12414982982008011800000) .
2. Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom

1. «Park Lock Solenoid Inoperative»(ref-277800-S41230535192008011800000)
2. «Shift Lever Does Not Move with Brake Pedal Depressed»(ref-277800-S42382155982008011800000)
3. «Shift Lever Can Be Moved without Brake Pedal Depressed»(ref-277800-S36166836312008011800000)