Honda 2005 FOURTRAX FOREMAN TRX500 TM Service Manual page 416

ELECTRIC SHIFT PROGRAM (ESP/FE model)
Problem Code 6: ECM Fail-Safe Circuit or Problem
Code 7: ECM Voltage Convert Circuit
1. ES System Failure Checking
Check the ES system failure (the gear position
indicator blinks) when turning the ignition switch
from OFF to ON.
Does the gear position indicator blink?
NO - No problem (temporary failure).
YES - GO TO STEP 2.
2. Problem Code Check
Check the number of blinks (problem code
number).
Does the gear position indicator blink other than
6 or 7 times?
NO - Replace the ECM with a known-good
one and troubleshoot again.
YES - Troubleshoot the problem code.
Problem Code 10: Ignition Pulse Generator System
1. ECM and Ignition Pulse Generator Connection
Inspection
Remove the front fender (page 3-9).
Check the connection of the ECM and alternator
connectors.
Are all connections good?
NO - Connect the ECM and/or alternator con-
nector securely.
YES - GO TO STEP 2.
2. Ignition Pulse Generator Inspection at ECM
Check the ignition pulse generator peak voltage
at the ECM (page 19-6).
Is the peak voltage 0.7 Vor more?
NO - GO TO STEP 3.
YES - G O TO STEP 4.
3. Ignition Pulse Generator Inspection at
Alternator
Check the ignition pulse generator peak voltage
at the alternator (page 19-6).
Is the peak voltage 0.7 V or more?
NO - Replace the ignition pulse generator
(alternator stator).
YES - Check for open or short circuit in the
Blue/yellow wire and/or White wire.
4. ES System Failure Checking
Check the number of gear position indicator
blinks while driving in 1st gear over 6 km/h (4 mi/
h) for more than 6 seconds.
Does the gear position indicator blink?
NO - No problem (temporary failure).
YES - Replace the ECM with a known-good
one and troubleshoot again.
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