Diagnostic System Check - Manual Transmission

Diagnostic System Check - Manual Transmission
Circuit Description

Important: Do not perform this check if no driveability concern exists.

The Diagnostic System Check - Manual Transmission is an organized approach to identifying a condition created by an electrical or mechanical malfunction in the manual transmission or its control module. The Diagnostic System Check - Manual Transmission is the starting point for any driveability concern diagnosis. This directs the service technician to the next logical step in order to diagnose the concern. Understanding the table and using it correctly will reduce diagnostic time, and will prevent the replacement of good parts.

Test Description
The numbers below refer to the step numbers on the diagnostic table.
1. This test ensures that the scan tool is getting power.
2. This test ensures that the scan tool is communicating to the ECM through the local area network (LAN).
3. This test checks to see if any ECM related DTCs should be diagnosed first.
5. This test checks for ECM failure DTCs.
6. This test checks for ECM failure DTCs.
9. This test checks to see if the customer concern is with Inspection and Maintenance (I/M) testing.