Driver's Unit

Remove the driver's multiplex control unit from the driver'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 3.
  
  Fig 1: Identifying Driver's Under-Dash Fuse/Relay Box Socket
  Courtesy of AMERICAN HONDA MOTOR CO., INC.
  
  Fig 2: Identifying Driver's Multiplex Control Unit Connector B
  Courtesy of AMERICAN HONDA MOTOR CO., INC.
  
  Fig 3: Identifying Driver's Under-Dash Fuse/Relay Box Connector E
  Courtesy of AMERICAN HONDA MOTOR CO., INC.

With the driver's multiplex control unit still disconnected, make these input tests at the connectors.

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

If all the input tests prove OK, go to step 4.

CONTROL UNIT INPUT TEST (DRIVER'S UNIT - 1 OF 2)

Cavity

Wire

Test condition

Test: Desired result

Possible cause if result is not obtained

A14

Fuse/relay box socket

Under all conditions

Check for continuity to ground:
There should be continuity.

Poor ground (G401)
Faulty driver's fuse/relay box
An open in the wire

B11

BLK

Under all conditions

Check for continuity to ground:
There should be continuity.

Poor ground (G501)
An open in the wire

A24

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

A12

Fuse/relay box socket

Under all conditions

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

Blown No. 54 (40 A) fuse in the under-hood fuse/relay box
Blown No. 13 (7.5 A) fuse in the passenger's under-dash fuse/relay box
An open in the wire

Fuse/relay box socket

Shift lever in P position

Check for continuity to ground:
There should be continuity.

Poor ground (G101, G102)
Faulty transmission range switch
Faulty driver's fuse/relay box
An open in the wire

B14

BLU/WHT

Under all conditions

Check for continuity between the B14 terminal and the PCM 56P connector B terminal No. 26 ⁽¹⁾ (disconnected):
There should be continuity.

An open in the wire

Check for continuity between the B14 terminal and body ground:
There should be no continuity.

Short in the wire

⁽¹⁾	For PCM connector terminal locations (see PCM INPUTS AND OUTPUTS AT CONNECTOR A ).

Reconnect the driver's multiplex control unit to the driver's under-dash fuse/relay box, turn the ignition switch ON (II) to keep the system awake, and make these input tests at the appropriate connectors on the driver's under-dash fuse/relay box.

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

If all the input tests prove OK, go to step 1 in PASSENGER'S UNIT .

CONTROL UNIT INPUT TEST (DRIVER'S UNIT - 2 OF 2)

Cavity	Wire	Test condition	Test: Desired result	Possible cause if result is not obtained
E3	GRN/ORN	Driver's door open	Check for voltage to ground: There should be less than 1 V.	Faulty driver's door switch An open in the wire
E3	GRN/ORN	Driver's door closed	Check for voltage to ground: There should be 5 V or more.	Faulty driver's door switch Short to ground in the wire