Honda TRX500FM Service Manual

LIGHTS/METERS/SWITCHES
3. Combination Meter Serial Line Short Circuit
Inspection
Turn the ignition switch OFF.
Disconnect Ihe PCM/ECM 33P (Black) connector [1]
and combination meter 21P connector.
Check for continuity between the wire harness side
PCM/ECM 33P (Black) connector terminal and
ground.
TOOL :
Test probe
07ZAJ·RDJA 110
Connection:
Orange (A21) - ground
Is there co ntinuity?
YES - Short circuit in the Orange wire.
NO - GO TO STEP 4.
4. Combination Meter Serial Une Open Circuit
Inspection
[1 [
Q }-----,
Orange (A21)
Check Ihe continuity between the PCM/ECM 33P r----------------- ---,
(Black) connector 111 and combination meter 21P (1\1
22·8
connector 12] terminals.
TOOL :
Test probe
07ZAJ·RDJA 110
Connection:
Orange (A2l) - Orange
Is there continuity?
YES - GO TO STEP 5.
NO - Open circuit in the Orange wire.
5. PCM IECM Circuit Inspection
Connect the PCM/ECM 33P (Black) connector.
Turn the ignition switch
ON and wait 5 seconds or
more. Measure resistance
atlhe combination meter
21P connector [1] terminals.
Connection: Orange - Green
Is the resistance 0.1 kD - 100 kD ?
YES - Replace the combination meter with a
known good one, and recheck .
NO - Replace the PCM/ECM with a known good
one, and recheck.
[21
\
t,
+
0000006'1
OO) \ ~
00 000
,
Q
-,
Orange (A21)
~g
Orange
[11
000000
rn-e.;,. O· t>E; e+ h
0000000
Green
,

Honda TRX500FM Specifications

General

Brand	Honda
Model	TRX500FM
Category	Offroad Vehicle
Language	English