Dtc "C42" (P1650): Ig Switch Circuit Malfunction - Suzuki VLR1800 Service Manual

P0230-L (Use of SDS)
Step
1 1) Turn the ignition switch OFF.
2) Remove the battery and battery holder. Refer to "Battery
/ Battery Holder Removal and Installation in Section 1J
(Page 1J-11)".
3) Check the FP relay coupler (1) for loose or poor
contacts.
If OK, then check the FP relay. Refer to "Fuel Pump
Relay Inspection in Section 1G (Page 1G-6)".
Is the FP relay OK?

DTC "C42" (P1650): IG Switch Circuit Malfunction

Detected Condition and Possible Cause
Detected Condition
Ignition switch signal is not input to the ECM.
Troubleshooting
NOTE
• Refer to "Ignition Switch Inspection in Section 1H (Page 1H-10)" for details.
• After repairing the trouble, clear the DTC using SDS tool. Refer to "Use of SDS Diagnosis Reset
Procedures (Page 1A-14)".
Action
1
I822H1110095-02
Engine General Information and Diagnosis:
Yes
• Y/B wire open or poor
"39" connection.
• O/W wire open or
shorted to ground.
• R/Bl or Y/R wire open
or shorted to ground,
or poor "33"
connection.
• If wire and
connection are OK,
intermittent trouble of
faulty ECM.
• Recheck each
terminal and wire
harness for open
circuit and poor
connection.
• Replace the ECM
with a known good
one, and inspect it
again. Refer to "ECM
Removal and
Installation in Section
1C (Page 1C-1)".
Possible Cause
• Ignition system circuit open or short.
• ECM malfunction.
1A-86
No
Replace the FP relay
with a new one.
B822H11104025