DTC Troubleshooting

WARNING: This page is about a different car, the 2006 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Before this troubleshooting, read and observe Precautions for DTC Troubleshooting.

DTC TROUBLESHOOTING CHART

Step	Action	YES	NO
1	Cruise control switch check Check cruise control switch referring to CRUISE CONTROL SWITCH INSPECTION . Is it in good condition?	Go to Step 2.	Replace cruise control switch.
2	Cruise control command switch circuit check Disconnect connectors from ECM with ignition switch turned OFF. Check for proper connection of cruise control switch circuit terminal to ECM connector. If connections are OK, check the following for cruise command switch circuit. Resistance between "LT GRN" wire terminal and "BLK/YEL" wire terminal of cruise control switch connector are infinity (no continuity check) Resistance between "LT GRN" wire terminal of cruise control switch connector and vehicle body ground is infinity (ground short check) Is it in good condition?	Substitute a known-good ECM and recheck.	Repair or replace wire circuit.

Step

Action

YES

Cruise control switch check

Check cruise control switch referring to CRUISE CONTROL SWITCH INSPECTION .

Is it in good condition?

Go to Step 2.

Replace cruise control switch.

Cruise control command switch circuit check

Disconnect connectors from ECM with ignition switch turned OFF.
Check for proper connection of cruise control switch circuit terminal to ECM connector.
If connections are OK, check the following for cruise command switch circuit.

Resistance between "LT GRN" wire terminal and "BLK/YEL" wire terminal of cruise control switch connector are infinity (no continuity check)
Resistance between "LT GRN" wire terminal of cruise control switch connector and vehicle body ground is infinity (ground short check)

Is it in good condition?

Substitute a known-good ECM and recheck.

Repair or replace wire circuit.