Honda CRF1000 Shop Manual page 142

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PGM-FI SYSTEM
3. Rear Wheel Speed Sensor Signal Output Line
Open Circuit Inspection
Turn the ignition switch OFF.
Disconnect the following:
– ABS modulator 18P (Black) connector (page 20-
7)
– ECM/PCM 33P (Black) connector (page 4-39)
Check for continuity between the wire harness side
18P (Black) connector [1] and 33P (Black)
connector [2].
TOOL:
Test probe
Connection: Blue/black – B18
Is there continuity?
YES
NO
4. Rear Wheel Speed Sensor Signal Output Line
Short Circuit Inspection
Check for continuity between the wire harness side
33P (Black) connector [1] and ground.
TOOL:
Test probe
Connection: B18 – Ground
Is there continuity?
YES
NO
5. ECM/PCM Inspection
Replace the ECM/PCM with a known good one
(page 4-39).
Connect the ABS modulator 18P (Black) connector.
Erase the DTC (page 4-6).
Test-ride the motorcycle above 20 km/h (12 mph)
for more than 20 seconds.
Stop the engine.
Check the DTC with the MCS.
Is DTC 66-1 indicated?
YES
NO
4-34
07ZAJ-RDJA110
– GO TO STEP 4.
– Open circuit in the Blue/black wire
07ZAJ-RDJA110
– Short circuit in the Blue/black wire
– GO TO STEP 5.
– Replace the ABS modulator with a known
good one (page 20-24) and recheck.
– Faulty original ECM/PCM
[1] [2]
Bu/Bl B18
[1]
B18