Galant LS V6-3.0L SOHC (1999)
Simplified Wiring System: Initial Inspection and Diagnostic Overview
Description of On-Board Diagnostics
The SWS reduces the number of wires by sending multiple signals along a single wire. This reduces vehicle weight and simplifies construction by
reducing wiring harness complexity weight.
The ETACS-ECU, front-ECU and column switch (incorporated in column-ECU) have multiplex signal circuits that enable them to transmit and/or
receive multiple signals and communicate with other control unit.
Diagnostic Strategies
Use these steps to plan your diagnostic strategy. If you follow them carefully, you will be sure that you have exhausted most of the possible ways to find
a SWS fault.
1. Gather information about the problem from the customer.
2. Verify that the condition described by the customer exists.
3. Check the vehicle for any SWS DTC.
4. If you cannot verify the condition and there are no SWS DTCs, the malfunction is intermittent. Refer to How to Use Troubleshooting/inspection
Service Points - How to Cope with Intermittent Malfunctions.
5. If you can verify the condition but there are no SWS DTCs, or the system cannot communicate with the scan tool, refer to Symptom Chart.
6. If there is a SWS DTC, perform the diagnostic procedures for the DTC. Refer to Diagnostic Trouble Chart.
