DTC B1832: Left Mirror Horizontal Sensor Open

WARNING: This page is about a different car, the 2011 Honda Pilot, 2010 Honda Pilot, and 2009 Honda Pilot. However, it is still accessible from the selected car via links, so may be relevant.

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 DTC 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 B1830 indicated?

YES - Go to step 5.

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

YES - Repair a short to ground in the wire. ■

NO - Go to step 10.

Fig 1: Checking Continuity Between Right Power Mirror Connector (13P) Terminal 6 & Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Connect power mirror control unit connector (24P) terminal No. 7 to body ground with a jumper wire.

Fig 2: Connecting Power Mirror Control Unit Connector (24P) Terminal No. 7 To Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check for continuity between right power mirror connector (16P) terminal No. 6 and body ground.
Is there continuity?

YES - Go to step 12.

NO - Repair an open or high resistance in the wire. ■

Fig 3: Checking Continuity Between Right Power Mirror Connector (16P) Terminal No. 6 & Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check for continuity between right power mirror connector (16P) terminals No. 4 and No. 3 and body ground.
Is there continuity?

YES - Repair a short to ground in the wire. ■

NO - Go to step 13.

Fig 4: Checking Continuity Between Right Power Mirror Connector (16P) Terminals 4, 3 & Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Connect power mirror control unit connector (24P) terminals No. 19 and No. 20 to body ground with a jumper wire.

Fig 5: Power Mirror Control Unit Connector (24P) Terminals No. 19 And No. 20
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check for continuity between right power mirror connector (16P) terminals No. 4 and No. 3 and body ground.
Is there continuity?

YES - Go to step 15.

NO - Repair an open or high resistance in the wire. ■

Fig 6: Checking Continuity Between Right Power Mirror Connector (16P) Terminals 4, 3 & Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check for continuity between power mirror control unit connector (24P) terminal No. 6 and body ground.
Is there continuity?

YES - Repair a short to ground in the wire. ■

NO - Go to step 16.

Fig 7: Checking Continuity Between Power Mirror Control Unit Connector (24P) Terminal No. 6 & Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Connect power mirror control unit connector (24P) terminal No. 6 to body ground with a jumper wire.

Fig 8: Connecting Power Mirror Control Unit Connector (24P) Terminal No. 6 To Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check for continuity between right power mirror connector (16P) terminal No. 5 and body ground.
Is there continuity?

YES - Go to step 18.

NO - Repair an open or high resistance in the wire. ■

Fig 9: Checking Continuity Between Right Power Mirror Connector (16P) Terminal No. 5 & Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Reconnect the power mirror control unit connector (24P).
Turn the ignition switch to ON (II).
Measure the voltage between power mirror control unit connector (24P) terminals No. 6 and No. 7.
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 ). ■

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