VSA DTC 61-12
DTC 61-12 : Modulator-Control Unit Power Source Circuit (IG) Low Voltage
NOTE: Before you troubleshoot, review the how to troubleshoot the VSA system - Refer to:
How to Troubleshoot the VSA System (2014 2015 2016) or
How to Troubleshoot the VSA System (2017 2018 2019 2020) .
| DTC Description | DTC | Freeze Frame |
|---|---|---|
| 61-12 Modulator-Control Unit Power Source Circuit (IG) Low Voltage |
DTCs (VSA)
- Problem verification
- 1. Turn the vehicle to the ON mode.
- 2. Clear the DTC with the HDS.
- 3. Turn the vehicle to the OFF (LOCK) mode.
- 4. Start the engine, and warm it up to normal operating temperature (the radiator fan comes on).
- 5. Test-drive the vehicle at 6 mph (10 km/h) or more.
NOTE: Drive the vehicle on the road, not on a lift.
- 6. Check for DTCs with the HDS.
DTC Description DTC Freeze Frame 61-12 Modulator-Control Unit Power Source Circuit (IG) Low Voltage Is DTC 61-12 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 - Refer to:
How to Troubleshoot the VSA System (2014 2015 2016) or
How to Troubleshoot the VSA System (2017 2018 2019 2020) ,
then check the battery - Refer to:
Battery Test (2016 2017 2018 2019 2020)
If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the Freeze data/on-board snapshot.
- VSA modulator-control unit check
- 1. Check and note the parameter(s) below with the HDS.
Signal Current conditions Values Unit BATTERY VOLTAGE - 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 - Refer to:
Battery Test (2016 2017 2018 2019 2020) ,
and check for any PGM-FI DTCs - Refer to:
How to Troubleshoot the Fuel and Emissions Systems (2014-20) or
How to Troubleshoot the Fuel and Emissions Systems (With Auto Idle Stop System) (2016-20)
- 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 than 3 V?
YES
Check the battery - Refer to: Battery Test (2014 2015), or Battery Test (2016) ,
and check for any PGM-FI DTCs - Refer to:
How to Troubleshoot the Fuel and Emissions Systems (2014-20) or
How to Troubleshoot the Fuel and Emissions Systems (With Auto Idle Stop System) (2016-20)
NO
Go to step 3.
- Open wire check (IG1 SAFETY line)
- 1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Disconnect the following connector.
VSA modulator-control unit 38P connector - 3. Turn the vehicle to the ON mode.
- 4. Measure the voltage between test points 1 and 2.
Test condition Vehicle ON mode VSA modulator-control unit 38P connector: disconnected Test circuit IG1 SAFETY Test point 1 VSA modulator-control unit 38P connector No. 36 (BLU) Test point 2 Body ground Is there battery voltage?
YES
The IG1 SAFETY wire is OK. Go to step 4.
NO
Repair an open or high resistance in the wire between the No. D23 (7. 5 A) fuse in the driver's under-dash fuse/relay box and the VSA modulator-control unit.
- VSA modulator-control unit check (update)
- 1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Reconnect the following connector.
VSA modulator-control unit 38P connector - 3. Update the VSA modulator-control unit if it does not have the latest software.
- 4. Turn the vehicle to the OFF (LOCK) mode.
- 5. Start the engine, and warm it up to normal operating temperature (the radiator fan comes on).
- 6. Test-drive the vehicle at 6 mph (10 km/h) or more.
NOTE: Drive the vehicle on the road, not on a lift.
- 7. Check for DTCs with the HDS.
DTC Description DTC Freeze Frame Is DTC 61-12 indicated?
YES
Check for loose terminals in the VSA modulator-control unit 38P 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.