XVS95CE Fault Code 37-1

Fault Code Nos.

Fault Code No.: 37-1 Diagnostic Code No.: 54

If fault code numbers "28" and "37" are both indicated, take the actions specified for fault code number
"28" first.

Do not remove the ISC (idle speed control) valve.

If fault code numbers "37" and "46" are both indicated, take the actions specified for fault code
number "46" first.

If fault code numbers "37" and "42" are both indicated, take the actions specified for fault code number
"42" first.

Item: Component other than ISC (idle speed control) unit is defective (ISC operating sound is heard).

Fail-Safe System: Able to Start Engine | Able to Drive Vehicle

Actuation: Fully closes the ISC valve, and then opens the valve. This operation is performed 3 times and takes
approximately 4 seconds each time. The engine trouble warning light comes on during the operation.

Procedure: The ISC unit vibrates when the ISC valve operates.

Probable Cause of Confirmation of Service
Item Malfunction and Check Maintenance Job Completion

Locate the malfunction.

Execute the diagnostic
mode. (Code No. 54).

Fully closes the ISC (idle
speed control) valve, and
then fully opens the valve.

If the ISC (Idle Speed Control) unit's operating sound is heard, go to item 2.

If however, the ISC unit's operating sound is not heard, then go to item 2 for Fault Code 37-2 for the defective ISC unit.

Incorrect speed sensor signal.

Check the speed sensor.

Execute the diagnostic
mode. (Code No. 07).

Rotate the rear wheel by
hand and check that the indicated value increases.

If Value does not increase, then, go to fault code No. 42.

Start the engine and let it idle
for approximately 10 seconds.

If, the Fault Code No. is NOT displayed, then Service is Complete.

If however, the Fault Code No. is displayed, then Go To Item 3 below.

Throttle valve does not fully
close.

Replace the throttle body assembly.

ISC valve is not moving correctly.

Replace the throttle body assembly.

Malfunction in ECU.

Replace the ECU.