Recline Position Sensor:

Remove the driver's power seat. See POWER HEATED SEATS .
Disconnect the 6P connector from the recline motor/position sensor and the 12P connector from the power seat control unit.
Check for continuity between the No. 4 terminal of the recline position sensor and C12 terminal of the power seat control unit.

Fig 1: Checking Continuity At Recline Position Sensor 6P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?
1. YES -Go to step 4.
2. NO -Repair open in the BRN/BLK wire.
Check for continuity between the No. 5 terminal of the recline position sensor and C5 terminal of the power seat control unit.

Fig 2: Checking Continuity Between No. 5 Terminal Of Recline Position Sensor And C5 Terminal Of Power Seat Control Unit
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?
1. YES -Go to step 5.
2. NO -Repair open in the YEL/BLK wire.
Reconnect the 6P and 12P connectors.
Check for voltage between the No. 6 terminal of the recline position sensor and body ground.

Fig 3: Checking Voltage Between No. 6 Terminal Of Recline Position Sensor And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there about 5 V?
1. YES -Go to step 7.
2. NO -Repair the open or the short to ground in the BRN/WHT wire.
Check for voltage pulse between the No. 5 terminal of the recline position sensor and body ground when the recline switch moves forward or backward.

Fig 4: Checking For Voltage Pulse
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Does voltage pulse from 0 to about 5 V alternately?
1. YES -Replace the power seat control unit.
2. NO -Check for a short in the wire. If the wire is OK, faulty recline position sensor; replace the recline motor assembly.