The Lcd Segment Check; The Gauge Drive Circuit Check; The Communication Line Check; Ending The Self-Diagnosis Function - Honda Civic 2002-2003 Service Manual

The LCD Segment Check:
When entering the self-diagnosis mode, the odo/trip segment blinks five times.
The Gauge Drive Circuit Check:
r--:'I
t=:J
When entering the self-diagnosis mode, the speedometer, the tachometer, the fuel gauge, and the coolant
temperature gauge needles sweep from the minimum position to maximum position, then return to the minimum
position.
NOTE: After the beeper stops sounding and the needles return to the minimum position, pushing the trip/reset button
starts the beeper drive circuit check (one beep) and the gauge drive circuit check again.
The check cannot be started until the needles return to the minimum position.
Self-diagnosis
ON
-----.J
mode
OFF
Trip/Reset
ON
n
n
rLJl
switch
OFF
Gauge needles
ON
U LJ
OFF
Beeper
ON
OFF
---------
..
5
sec
The Communication Line Check:
The needles sweep from the
minimum position to the
maximum position, then return
to the minimum position.
In the self-diagnosis mode, after the ado/trip LCD segments check, the self-diagnosis starts the communication line
check.
If all segments comes on, the communication line is OK.
If the word "Error" is indicated, there is a malfunction in the communication line between the gauge assembly, the
multiplex control unit, and the ECM.
Normal:
Faulty:
::: ::: ::: ::: :::
.
:::
-
I
I
- " ,
.-. .-.
I III
-
.
Ending the self-diagnosis function:
Turn the ignition switch OFF.
NOTE: If the vehicle speed exceeds 1.2 mph (2 km/hl, the self-diagnosis function ends.
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