Dtc 21-1 (Shift Angle Sensor Low Voltage) - Honda TRX500FM Service Manual

ELECTRIC SHIFT PROGRAM (ESP: FE/FPE models)
3. VS Sensor Signal line Open Circuit Inspection
Turn the ignition switch OFF.
Disconnecllhe peM 33P (Gray) connector [1).
Check for continuity between the wire harness side
VS
sensor
3P (Black) connector [2J and peM 33P
(Gray) connector terminals .
Connection : 816 - Pink
TOOL:
Test probe
07ZAJ·RDJA110
Is there continuity'?
YES
- GO TO STEP 4.
NO
- Open circuit in the Pink or Pink./green wire .
4.
VS Sensor Signal line Short Circuit Inspection
Check for continuity between the wire harness side
VS
sensor
3P (Black) connector [1] and ground.
Connection : Pink - Ground
Is there continuity?
YES
- Short circuit in the pink or Pink/green wire .
NO - GO TO STEP 5.
5. VS Sensor Inspection
Turn the ignition switch OF F.
Replace the VS sensor wi th a new one (page 23-27).
Erase the DTC (page 23-12).
Test-ride the vehicle and recheck the DTC .
Is the ore 11-1 indicated ?
YES - Replace the PCM with a known good one
(page 4-34), and recheck.
NO - Faulty original VS sensor.
DTC 21·1 (SHIFT ANGLE SENSOR
LOW VOLTAGE)
NOTE :
Before starting the troubleshooting, check for loose or
poor contact of the following connectors, and recheck
the DTC (page 23-14).
- shift angle sensor 3P (Gray)
- engine sub-wire harness 6P (Black)
- PCM 33P (Black)
1. Shift Angle Sensor System Inspection
Turn the ignition switch ON and engine stop switch
·0·.
Check the shift angle sensor with the HDS pocket
tester.
Is about 0 V (low voltage) indicated?
YES - GO TO STEP 2.
NO Intermittent failure.
• Loose or poor contact of the connector.
121
Pink 816
PI
PI
Pink
23-15