Dtc 15-01: 2Wd/4Wd Select Signal Blinking (Regular Diagnosis) - Honda TRX500FM Service Manual

ELECTRIC POWER STEERING (EPS: FPM/FPE models)
DTC 14-01: EPS ECU INTERNAL
CIRCUIT (POWER RELAY STUCK ON)
(REGULAR DIAGNOSIS)
Refer to OTG 13-01 (page 24-19)
DTC 14-02 : EPS ECU INTERNAL
CIRCUIT (FAIL-SAFE RELAY 1 STUCK
ON) (INITIAL DIAGNOSIS)
Refer to OTG 13-01 (page 24-19)
DTC 14-03: EPS ECU INTERNAL
CIRCUIT (FAIL-SAFE RELAY 2 STUCK
ON) (INITIAL DIAGNOSIS)
Refer to oTC 13-01 (page 24-19)
DTC 14-04: EPS ECU INTERNAL
CIRCUIT (POWER RELAY STUCK
OPEN) (REGULAR DIAGNOSIS)
Refer to DlG 13-01 (page 24-19)
DTC 15-01 :
2WD/4WD
SELECT SIGNAL
BLINKING (REGULAR DIAGNOSIS)
NOTE :
Before starting the troubleshooting, check for loose or
poor contact of the following connectors, and recheck
the 4WD indicator (page 24-18).
- 4WD select switch
- EPS ECU 21 P (Gray)
- combination meter 21 P (Black)
When this problem occurs, there are some of
problem of 2WDf4WD select system.
Question the customer about the conditions when
the problem occurred, and try to reproduce the same
conditions for troubleshooting. Find oul when the
4WD indicator blinked, such as during 4WO-to-2WD
selecting. 2WO-lo-4WD selecting, al what speed,
etc.
1. EPS ECU System Inspection
Erase the Drc (page 24.11).
Perform the test·ride and check the 4WD indicator
11].
Does the 4WD indicator blinking ?
YES - Check the 4WD select switch (page 22·17).
If it is OK, inspect the 2WD/4WD select
system (front final clutch; page 19·16).
NO Intermittent failure.
Loose or poor contact of the following
connectors:
- 4WD select switch
- EP$ ECU 21P (Gray)
- combination meter 21 P (Black)
24·21