Honda TRX500FM Service Manual

POWER/GROUND LINE INSPECTION
Disconnect the combination meier 21 P connec t or
(page 22-6),
Check the power and ground lines at the wi re harness
side connector.
POWER INPUT LINE
Measure the voltage between the combination meter
21 P connector [1] terminal and ground .
Connection : Black/red (+) - Ground (-)
There should be battery voltage with the ignition switch
turned ON.
If there is no voltage, check Ihe following:
- IGN fuse ( 10 A)
- Black/red wire between the combination meter and
fuse box for an open circuit
- ignition switch (page 22-11)
-
Black wire between the ignition switch and fuse box
for an open circuit
GROUND LINE
Check for continuity between the combination meter
21P connector [11 terminal and ground.
There should
be continuity all times.
Connection : Green - Ground
If there is no continuity, check for an open circuit in the
Green wire.
SERIAL COMMUNICATION LINE
Gear position indicator continuously blinks " -", MIL
and engine coolant temperature indicator do not
come on
1. PCMIECM Power Input Inspection
Check that the engine can be started normally.
Can the engine s taff ?
YES - GO TO STEP 2.
NO - Check the PCM/ECM power/ground line
(page 4-35).
2.
Connector Inspection
Check the combination meter 21 P connector and
PCM/ECM 33P (Black) connector for loose contacts
or corroded terminals.
Are the connectors in good condition?
YES - GO TO STEP 3.
NO - Loose or poor contacts at the combination
meter 21P connector
or PCMIECM 33P
(Black) connector.
[1 [
LIGHTS/METERS/SWITCHES
[1 [
0000000
,--tt"! OOOOOO
CJOOOOO
v
Black/red (+)
0000000
OOOO' fteetf------,
000(:)00
Green
22-7

Honda TRX500FM Specifications

General

Brand	Honda
Model	TRX500FM
Category	Offroad Vehicle
Language	English