'04-'06 models

Remove the gauge assembly and disconnect its connectors (see GAUGE ASSEMBLY REPLACEMENT ).
Inspect the 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: Inspecting Connector And Socket Terminals (Gauge Assembly 30P Connector A)
  Courtesy of AMERICAN HONDA MOTOR CO., INC.
  
  Fig 2: Inspecting Connector And Socket Terminals (Gauge Assembly 22P Connector B)
  Courtesy of AMERICAN HONDA MOTOR CO., INC.
  
  Fig 3: Inspecting Connector And Socket Terminals (Gauge Assembly 16P Connector C)
  Courtesy of AMERICAN HONDA MOTOR CO., INC.

With the connectors 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.

GAUGE INPUT TEST (CONNECTORS DISCONNECTED)

Cavity	Wire	Test condition	Test: Desired result	Possible cause if result is not obtained
A22	WHT/RED	Ignition switch ON (II)	Attach to ground: The back-up lights should come on.	Faulty reverse relay An open in the wire

Reconnect the connectors to the gauge assembly, and make sure 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, the gauge assembly must be faulty, replace it.

GAUGES INPUT TEST (CONNECTORS RECONNECTED)

Cavity	Wire	Test condition	Test: Desired result	Possible cause if result is not obtained
C10	YEL	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
C11	WHT/YEL	Under all conditions	Check for voltage to ground: There should be battery voltage.	Blown No. 13 (7.5 A) fuse in the passenger's under-dash fuse/ relay box An open in the wire
C12 C13	BLK	Under all conditions	Check for voltage to ground: There should be less than 1 V.	Poor ground (G501) An open in the wire
C2	BLU/WHT	Ignition key is in the ignition switch	Check for voltage to ground: There should be less than 1 V.	Poor ground (G401) Faulty ignition key switch An open in the wire
C2	BLU/WHT	Ignition key is out of the ignition switch	Check for voltage to ground: There should be 5 V or more.	Faulty ignition key switch Short to ground
A8	WHT	Transmission range switch in R position	Check for voltage to ground: There should be less than 1 V.	Poor ground (G101, G102) Faulty transmission range switch An open in the wire
A8	WHT	Transmission range switch in other any position than R position	Check for voltage to ground: There should be 5 V or more.	Faulty transmission range switch Short to ground
B6	GRN/RED	Ignition switch ON (II), parking brake pedal pressed	Check for voltage to ground: There should be less than 1 V.	Poor ground Faulty parking brake switch An open in the wire
B6	GRN/RED	Ignition switch ON (II), parking brake pedal released	Check for voltage to ground: There should be 5 V or more.	Faulty parking brake switch Short to ground
B12	PNK	Driver's door lock knob switch in locked	Check for voltage to ground: There should be less than 1 V.	Faulty driver's door lock knob switch An open in the wire
B12	PNK	Driver's door lock knob switch in unlocked	Check for voltage to ground: There should be 5 V or more.	Faulty driver's door lock knob switch Short to ground
B20	BLU/RED	Ignition switch ON (II), driver's seat belt unbuckled	Check for voltage to ground: There should be less than 1 V.	Faulty driver's seat belt switch An open in the wire
B20	BLU/RED	Ignition switch ON (II), driver's seat belt buckled	Check for voltage to ground: There should be 5 V or more.	Faulty driver's seat belt switch Short to ground