Jeep J-10 Series 1982 Technical & Service Manual page 413

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FUEL SYSTEMS 1J-99
Chart 6—Test Bulb Circuit Inoperative
NOTE: BULB WILL NOT BE ILLUMINATED IF 'TEST" WIRE IS GROUNDED BEFORE THE
IGNITION IS TURNED ON. THE MC SOLENOID WILL ALSO CLICK.
CHECK FUSE AT FUSE BLOCK.
I
BLOWN FUSE
REPLACE FUSE-CHECK
FOR CAUSE
UNDER 10 VOLTS
I
CHECK VOLTAGE BETWEEN BULB CONNECTOR
PINK/BLACK WIRE TERMINAL AND GROUND
OVER 10 VOLTS
CHECK BULB AND
WIRE CONNECTOR
UNDER 10 VOLTS
1
FUSE OK
INSPECT TEST BULB CONNECTOR FOR
PROPER CONNECTION. WITH IGNITION ON AND
ENGINE OFF. CHECK VOLTAGE BETWEEN BULB
CONNECTOR WHITE WIRE TERMINAL AND GROUND.
OVER 10 VOLTS
CHECK VOLTAGE BETWEEN ECM TERMINAL R AND
GROUND.
OVER 10 VOLTS
CHECK VOLTAGE BETWEEN
ECM TERMINAL T AND
GROUND
UNDER 10 VOLTS
REPAIR OPEN WIRE BETWEEN FUSE
AND BULB CONNECTOR
REPAIR OPEN IN WIRE BETWEEN
ECM R TERMINAL AND TEST BULB
CONNECTOR.
UNDER 1 VOLT
CHECK VOLTAGE BETWEEN ECM
TERMINAL U AND GROUND
I
OVER 10 VOLTS
TURN IGNITION OFF AND REPLACE ECM
OVER 1 VOLT
REPAIR ECM
GROUND CONNECTION
I
UNDER 10 VOLTS
REPAIR OPEN IN WIRE BETWEEN
TERMINAL U AND TEST BULB.
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