Diagnostic Test; Initialization Test - Jeep 1987 Wrangler Workshop Manual

ENQINES
JSI1
FUEL FEEDBACK SYSTEMS
DIAGNOSTIC TEST 2
INITIALIZATION T E S T
REMOVE
A I R C L E A N E R C O V E R
INSTALL SAFETY PLASTIC SHIELD
NOTE: WHEN APPLICABLE,
DIAGNOSTIC CONNECTOR
TERMINALS CAN BE USED
AS TEST POINTS INSTEAD
OF MCU HARNESS
CONNECTOR TERMINALS.
WHILE OBSERVING METERING PINS, HAVE HELPER TURN IGNITION SWITCH TO START
ENGINE. METERING PINS SHOULD MOVE FULLY TOWARD THE FRONT OF ENGINE,
REVERSE DIRECTION AND MOVE BACK TOWARD REAR, REVERSE DIRECTION AND
MOVE TOWARD FRONT, STOP AND REMAIN STATIONARY.
NO YES
TURN IGNITION OFF LOCATE AIR CLEANER
MOUNTED THERMAL ELECTRIC SWITCH (TES) AND
DISCONNECT IT FROM WIRE HARNESS INSTALL A
JUMPER WIRE ACROSS WIRE CONNECTOR
TERMINALS
START ENGINE AND OBSERVE METERING PINS
METERING PINS SHOULD REPEAT INITIALIZATION
PROCESS DESCRIBED ABOVE
Y E S /
REMOVE JUMPER WIRE
AND CONNECT TES
CONNECTOR.TEST
COMPLETE.
REPLACE MCU AND
RETEST.
CONT'D.
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