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.

DTC Description
DTC
Freeze Frame
61-11 Modulator-Control Unit Power Source Circuit (IG) Low Voltage
    

1.
Problem verification:

Problem verification
?1.
Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

?2.
Clear the DTC with the HDS.


?3.
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

?4.
Start the engine.

?5.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
61-11 Modulator-Control Unit Power Source Circuit (IG) Low Voltage
    

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 1:

VSA modulator-control unit check 1
?1.
Check and note the parameter(s) below with the HDS.
Signal
Current conditions
Values
Unit
BATTERY VOLTAGE
    

Is 9.5 V or more indicated?

     
YES
     
     
     
Check the battery terminal, then check for loose terminals between the battery and the VSA modulator-control unit 21P connector.?
     
NO
     
     
     
Go to step 3.
3.
VSA modulator-control unit check 2:

VSA modulator-control unit check 2
?1.
Using a voltmeter, measure and note the voltage across the battery terminals.

?2.
Compare the voltage noted in step 2 to the voltage in step 3.

Is the difference between the two voltage readings more than 3 V?

     
YES
     
     
     
Go to step 4.
     
NO
     
     
     
4.
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.

?2.
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

?3.
Start the engine.

?4.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
     

Is DTC 61-11 indicated?

     
YES
     
     
     
Check for loose terminals in the VSA modulator-control unit 21P connector. If the VSA modulator-control unit was updated and the symptom/indication is still present, replace the VSA modulator-control unit.?
     
NO
     
     
     
Troubleshooting is complete. If any other DTCs are indicated, go to the indicated DTCs troubleshooting.?