Jeep J-10 Series 1982 Technical & Service Manual page 421

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FUEL SYSTEMS 1J-1Q7
TROUBLE CODE 23
CHECK CONNECTIONS AT MC SOLENOID. IF OK, PROCEED.
I
t TURN IGNITION ON, DO NOT START ENGINE.
• DO NOT GROUND 'TEST" WIRE.
• CHECK VOLTAGE AT MC SOLENOID DWELL LEAD.
1
UNDER 10V
| OVER 10V 1
• DISCONNECT MC SOLENOID.
• CONNECT TEST LIGHT BETWEEN
THE SOLENOID CONNECTOR POWER
TERMINAL (PINK LEAD) AND GROUND.
CHECK VOLTAGE AT ECM TERMINAL W
I
| LIGHT|
CONNECT TEST
LIGHT BETWEEN
SOLENOID CONNECTOR
TERMINALS. DO NOT
USE VOLTMETER.
r
±
NO LIGHT
| NO LIGHT
CHECK FOR OPEN POWER
CIRCUIT TO SOLENOID (BLOWN
FUSE).
"~l
I LIGHT |
REPLACE
CARBURETOR MC
SOLENOID.
REMOVE GRAY ECM CONNECTOR
| NO LIGHT
REPLACE ECM
LIGHT |
REPAIR SHORT TO GROUND
INSOL/ECMWIRE.
UNDER 10V
REPAIR OPEN
IN SOL/EMC
WIRE.
OVER 10V
CHECK CARBURETOR
MCSOL RESISTANCE.
UNDER 20
OHMS
REPLACE
SOLENOID
AND ECM.
OVER 20
OHMS
REPLACE ECM
90769P