Closed Loop Operational Test - Jeep 1987 Wrangler Workshop Manual

ENGINES
FUEL FEEDBACK SYSTEMS
DIAGNOSTIC TEST 4
CLOSFD LOOP OPERATIONAL TEST
S E E
I.S.
N
O
T
E
S
CAUTION: SAFETY SHIELD MUST BE IN PLACE AT TOP OF CARBURETOR AIR CLEANER
START AND WARM ENGINE UNTIL COOLANT TEMPERATURE HAS STABILIZED. REMOVE AIR
COVER AND INCREASE ENGINE SPEED TO 2000 RPM AND MAINTAIN WHILE OBSERVING
CARBURETOR STEPPER MOTOR METERING PINS.
NO
YES
NO
PROCEED TO TEST 9.
PERFORM TEST 6
IF STEPPER MOTOR PINS
ARE OSCILLATING NEAR
MIDPOINT, CLOSED LOOP
CIRCUIT IS FUNCTIONING
NORMALLY. TEST
COMPLETE.
8 1 1 3 3
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