DTC 51: Motor Lock: DTC 52: Motor Stuck

WARNING: This page is about a different car, the 2011 Honda Insight and 2010 Honda Insight. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see HOW TO USE THE HDS (HONDA DIAGNOSTIC SYSTEM) ).

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Turn the ignition switch to LOCK (0).
Test-drive the vehicle at 19 mph (30 km/h) or more.
NOTE: Drive the vehicle on the road, not on a lift.
Check for DTCs with the HDS.
Is DTC 51 or 52 indicated?

YES -Go to step 6.

NO -Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting (see INTERMITTENT FAILURES ).
Turn the ignition switch to LOCK (0).
Check the No. 58 (30 A) fuse in the under-hood fuse/relay box.
Is the fuse blown?

YES -Go to step 8.

NO -Reinstall the checked fuse, then Go to step 16.
Disconnect the VSA modulator-control unit 47P connector (see step 2).
Check for continuity between VSA modulator-control unit 47P connector terminal No. 1 and body ground.

Fig 1: Checking Continuity Between VSA Modulator-Control Unit 47P Connector Terminal 1 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Repair a short to body ground in the wire between the No. 58 (30 A) fuse in the under-hood fuse/relay box and the VSA modulator-control unit.

NO -Install a new No. 58 (30 A) fuse in the under-hood fuse/relay box, then go to step 10.
Reconnect the VSA modulator-control unit 47P connector.
Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Turn the ignition switch to LOCK (0).
Test-drive the vehicle at 19 mph (30 km/h) or more.
NOTE: Drive the vehicle on the road, not on a lift.
Check for DTCs with the HDS.
Is DTC 51 or 52 indicated?

YES -Go to step 20.

NO -Troubleshooting is complete.
Disconnect the VSA modulator-control unit 47P connector (see step 2).
Measure the voltage between VSA modulator-control unit 47P connector terminal No. 1 and body ground.

Fig 2: Measuring Voltage Between VSA Modulator-Control Unit 47P Connector Terminal 1 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES -Go to step 18.

NO -Repair an open in the wire between the No. 58 (30 A) fuse in the under-hood fuse/relay box and the VSA modulator-control unit.
Check for continuity between VSA modulator-control unit 47P connector terminal No. 47 and body ground.

Fig 3: Checking Continuity Between VSA Modulator-Control Unit 47P Connector Terminal 47 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Go to step 19.

NO -Repair an open in the wire between the VSA modulator-control unit and body ground (G203).
Reconnect the VSA modulator-control unit 47P connector.
Update the VSA modulator-control unit if it does not have the latest software (see VSA MODULATOR-CONTROL UNIT UPDATE ). If the unit already has the latest software, substitute a known-good VSA modulator-control unit (see VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION ).
Turn the ignition switch to LOCK (0).
Test-drive the vehicle at 19 mph (30 km/h) or more.
NOTE: Drive the vehicle on the road, not on a lift.
Check for DTCs with the HDS.
Is DTC 51 or 52 indicated?

YES -Check for loose terminals in the VSA modulator-control unit 47P connector. If the VSA modulator-control unit was updated, substitute a known-good VSA modulator-control unit (see VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION ), then retest. If the VSA modulator-control unit was substituted, Go to step 1.

NO -If the VSA modulator-control unit was updated, troubleshooting is complete. If the VSA modulator-control unit was substituted, replace the original VSA modulator-control unit (see VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION ). If any other DTCs are indicated, go to the indicated DTCs troubleshooting.