Rear Window

Before testing the wiper/washer control functions, troubleshoot the multiplex control system (see TROUBLESHOOTING ).
Passenger's Multiplex Control Unit
Remove the passenger's multiplex control unit from the passenger's under-dash fuse/relay box, and disconnect its connector.
Inspect all connector and socket terminals to be sure they are all making good contact.
- If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.
- If the terminals look OK, go to step 4.
  PASSENGER'S UNDER-DASH FUSE/RELAY BOX SOCKET (Passenger's multiplex control unit connector A)
  
  Fig 1: Identifying Passenger's Multiplex Control Unit Connector Terminals
  Courtesy of AMERICAN HONDA MOTOR CO., INC.
  
  PASSENGER'S MULTIPLEX CONTROL UNIT CONNECTOR B
  
  Fig 2: Identifying Passenger's Multiplex Control Unit Connector Terminals
  Courtesy of AMERICAN HONDA MOTOR CO., INC.

With the passenger's multiplex control unit still disconnected, make these input tests at the connector and passenger's under-dash fuse/relay box sockets.

If any test indicates a problem, find and correct the cause, then recheck the system.

If all the input tests prove OK, the control unit must be faulty; replace the control unit.

RESULT REFERENCE CHART (PASSENGER'S MULTIPLEX CONTROL UNIT STILL CONNECTOR AND PASSENGER'S UNDER-DASH FUSE/RELAY BOX SOCKETS)

Cavity

Wire

Test condition

Test: Desired result

Possible cause if result is not obtained

A22

Fuse/relay box socket

Ignition switch ON (II)

Check for voltage to ground: There should be battery voltage.

Blown No. 9 (10 A) fuse in the driver's under-dash fuse/relay box
Faulty driver's fuse/relay box
An open in the wire

B22 ⁽²⁾

BLK

Under all conditions

Check for voltage to ground: There should be less than 1 V.

Poor ground (G503)
An open in the wire

B16⁽¹⁾

RED/BLU

Ignition switch ON (II)

Attach to ground: The rear window wiper motor should run.

Blown No. 7 (7.5 A) fuse in the driver's under-dash fuse/relay box
Faulty rear window intermittent wiper relay
An open in the wire

B14⁽¹⁾ B16⁽¹⁾

LT GRN/BLK and RED/BLU

Ignition switch ON (II)

Attach B16 to ground, check for voltage between B14 and ground: There should be 4 V or more with the wiper in the park position and 0 V as it sweeps.

Blown No. 7 (7.5 A) fuse in the driver's under-dash fuse/relay box
Faulty rear window intermittent wiper relay
Faulty rear window wiper motor
An open in the wire

B15 ⁽²⁾

BLU/GRN

Ignition switch ON (II) and rear wiper switch ON

Check for voltage to ground: There should be battery voltage.

Blown No. 7 (7.5 A) fuse in the driver's under-dash fuse/relay box
Faulty wiper/washer switch
An open in the wire

B18 ⁽²⁾

GRN/YEL

Ignition switch ON (II) and washer switch ON

Check for voltage to ground: There should be battery voltage.

Blown No. 7 (7.5 A) fuse in the driver's under-dash fuse/relay box
Faulty wiper/washer switch
An open in the wire

⁽¹⁾	Passenger's multiplex control unit connector B

⁽²⁾	Make this test at passenger's multiplex control unit connector B with all connectors reconnected