VSA System

Control System DTCs

VSA DTC Troubleshooting: 61-11

DTC 61-11 : Modulator-Control Unit Power Source Circuit (IG) Low Voltage

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information Reading and Clearing Diagnostic Trouble Codes.

1. Problem verification:

Problem verification
-1. Turn the ignition switch to ON (II).

-2. Clear the DTC with the HDS.

-3. Turn the ignition switch to LOCK (0).

-4. Start the engine.

-5. Check for DTCs with the HDS.

Is DTC 61-11 indicated?
-YES- The failure is duplicated. Go to step 2.
-NO- Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting.

2. VSA modulator-control unit check:

VSA modulator-control unit check
-1. Check and note BATTERY voltage in the VSA DATA LIST with the HDS.

-2. Using a voltmeter, measure and note the voltage across the battery terminals.
NOTE: If the voltage is below 9.5 V, check the battery Battery Test, and check the PGM-FI DTCs How To Troubleshoot The Fuel And Emissions Systems.

-3. Compare the voltage noted in step 2-1 to the voltage in step 2-2.

Is the difference between the two voltage readings less then 3 V?
-YES- Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting.
-NO- Go to step 3.

3. VSA modulator-control unit check (update):

VSA modulator-control unit check (update)
-1. Update the VSA modulator-control unit if it does not have the latest software Programming and Relearning.

-2. Turn the ignition switch to LOCK (0).

-3. Start the engine.

-4. Check for DTCs with the HDS.

Is DTC 61-11 indicated?
-YES- Check for loose terminals in the VSA modulator-control unit 22P connector. If the VSA modulator-control unit was updated and the symptom/indication is still present, replace the VSA modulator-control unit Service and Repair.
-NO- Troubleshooting is complete. If any other DTCs are indicated, go to the indicated DTCs troubleshooting.