DTC B1830: Right Mirror Horizontal Sensor Open

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Clear the DTCs with the HDS.
Turn the ignition switch to LOCK (0) and then back to ON (II).
Operate the right power mirror in each direction with the power mirror switch.
Check for DTCs with the HDS.
Is DTC B1832 indicated?

YES -Go to step 5.

NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections.
Turn the ignition switch to LOCK (0).
Remove the front passenger's door panel (see FRONT DOOR PANEL REMOVAL/INSTALLATION ).
Disconnect the power mirror control unit 24P connector.
Disconnect the right power mirror 16P connector.
Check for continuity between right power mirror 16P connector terminal No. 6 and body ground.

Fig 1: Checking Continuity Between Right Power Mirror 16P Connector Terminal No. 6 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Repair a short to ground in the wire.

NO -Go to step 10.
Connect power mirror control unit 24P connector terminal No. 7 to body ground with a jumper wire.

Fig 2: Identifying Power Mirror Control Unit 24P Connector Terminal No. 7 Connection With Body Ground Using Jumper Wire
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check for continuity between right power mirror 16P connector terminal No. 6 and body ground.

Fig 3: Checking Continuity Between Right Power Mirror 16P Connector Terminal No. 6 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Go to step 12.

NO -Repair an open or high resistance in the wire.
Check for continuity between body ground and right power mirror 16P connector terminals No. 4 and No. 3 individually.

Fig 4: Checking Continuity Between Body Ground And Right Power Mirror 16P Connector Terminals No. 4 And No. 3
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Repair a short to ground in the wire.

NO -Go to step 13.
Connect power mirror control unit 24P connector terminals No. 19 and No. 20 to body ground with a jumper wire.

Fig 5: Identifying Power Mirror Control Unit 24P Connector Terminals No. 19 And No. 20 Connection With Body Ground With Using Jumper Wire
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check for continuity between body ground and right power mirror 16P connector terminals No. 4 and No. 3 individually.

Fig 6: Checking Continuity Between Body Ground And Right Power Mirror 16P Connector Terminals No. 4 And 3
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Go to step 15.

NO -Repair an open or high resistance in the wire.
Check for continuity between power mirror control unit 24P connector terminal No. 6 and body ground.

Fig 7: Checking Continuity Between Power Mirror Control Unit 24P Connector Terminal No. 6 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Repair a short to ground in the wire.

NO -Go to step 16.
Connect power mirror control unit 24P connector terminal No. 6 to body ground with a jumper wire.

Fig 8: Identifying Power Mirror Control Unit 24P Connector Terminal No. 6 Connection With Body Ground Using Jumper Wire
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check for continuity between right power mirror 16P connector terminal No. 5 and body ground.

Fig 9: Checking Continuity Between Right Power Mirror 16P Connector Terminal No. 5 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Go to step 18.

NO -Repair an open or high resistance in the wire.
Reconnect the power mirror control unit 24P connector.
Turn the ignition switch to ON (II).
Measure the voltage between power mirror control unit 24P connector terminals No. 6 and No. 7.

Fig 10: Measuring Voltage Between Power Mirror Control Unit 24P Connector Terminals No. 6 And 7
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there about 5 V?

YES -Faulty right power mirror position sensor; replace the power mirror actuator (see POWER MIRROR ACTUATOR REPLACEMENT ).

NO -Substitute a known-good power mirror control unit, and recheck. If the DTC is gone, the original power mirror control unit is faulty; replace it (see POWER MIRROR CONTROL UNIT INPUT TEST/REPLACEMENT ).