Ignition System Service Information; Ignition System - Specifications; Ignition System Torque Values; Ignition System - Tools Needed - Honda TRX500FM Service Manual

IGNITION SYSTEM
SERVICE INFORMATION
GENERAL
NOTICE
The PCMIECM may be damaged if dropped. Also, if the connector is disconnected when current is "owing, the excessive
voltage may damage the PCMIECM. Always tum the ignition switch OFF before servicing.
Use spark plugs with the correct heat range. Using spark plugs with an incorrect heat range can damage the engine.
Some electrical components may be damaged if terminals or connectors are connected or disconnected while the ignition switch
is ON and current is present
When servicing the ignition system, always follow the checks described in the troubleshooting chart (page 5-4).
This ignition system is controlled by PCM/ECM .
The transistorized ignition system uses an electrically controlled ignition timing system. No adjustments can be made to the
ignition timing.
A faulty ignition system is often related to poor connections. Check those connections before proceeding.
Make sure the battery is adequately charged . Using the starter motor with a weak battery results in a slower engine cranking
speed as well as no spark at the spark plug.
The engine stop switch line is connected to the PCM/ECM on this vehicle . Its signal permits the PCM/ECM to conlrollhe fuel
pump, injector and ignition coil.
Refor to each section for the following components information.
- CKP sensor (page 13·6).
- Ignition switch (page 22-11).
- Engine stop switch (page 22-11).
SPECIFICATION
ITEM
Spark plug
Spark plug gap
Ignition coil primary peak voltage
Ignition pulse generator peak voltage
Ignition timing
CF"
mark)
TORQUE VALUES
; Timi"9 hole cap
ITEM
TOOLS
IgnitionMate peak voltage tester
MTP07-0286 (U.S.A. on ly)
SPECIFICATIONS
T
BKR5E-11 (NGK), K16PR-U11 (DENSO)
1.0
1.1 mm (0.039 0.043 in)
+
100 V minimum
+
0.7 V minimum
10' BTDC at idle
Q' TV
THREAD TORQUE
:h
DIA. (mm)
N·m (kgf-m , IbUt)
REMARKS
14 _ - 1 _ - - , 1 0 7)
1
Peak voltage adaptor
07HGJ-0020100
(not available in U.S.A .) with
commercially available digital
multimeter (impedance 10 MOIOCV
minimum)
Test probe
07ZAJ-RDJA110
l
,
,
1
1
5·3