DTC Troubleshooting

WARNING: This page is about a different car, the 2006 Suzuki XL-7. However, it is still accessible from the selected car via links, so may be relevant.

DTC DIAGNOSTIC TROUBLESHOOTING CHART

Step	Action	YES	NO
1	Was "Engine and Emission Control System" performed?	Go to Step 2.	Go to ENGINE AND EMISSION CONTROL SYSTEM CHECK .
2	Check wire circuit Turn OFF ignition switch. Disconnect connector from IMT vacuum solenoid valve. Check for proper connection of IMT vacuum solenoid valve connector at "BLU/BLK" and "GRY/RED" wire terminals. If OK, turn ON ignition switch and measure voltage between "BLU/BLK" wire of IMT vacuum solenoid valve connector and engine ground. Is voltage 10 - 14 V?	Go to Step 3.	Open in "BLU/BLK" circuit.
3	Check wire circuit Remove ECM cover. Turn OFF ignition switch. Disconnect connectors from ECM. Check for proper connection of ECM connector at "E61-21" terminal. If OK, measure resistance between "E61- 21" terminal of ECM connector and vehicle body ground. Is resistance infinity?	Go to Step 4.	"GRY/RED" circuit shorted to ground.
4	Check wire circuit Turn ON ignition switch. Measure voltage "E61-21" terminal of ECM connector and vehicle body ground. Is voltage 0 V?	Go to Step 5.	"GRY/RED" circuit shorted to power supply line.
5	Check wire circuit Turn OFF ignition switch. Connect connectors from ECM. Turn ON ignition switch. Measure voltage "E61-21" terminal of ECM connector and vehicle body ground. Is voltage 10 - 14 V?	Go to Step 6.	Open in "GRY/RED" circuit.
6	Check IMT vacuum solenoid valve performance Check IMT vacuum solenoid valve referring to IMT VACUUM TANK ASSEMBLY INSPECTION . Is check result satisfactory?	Substitute a known-good ECM and recheck.	Replace vacuum tank assembly.