Jeep 1987 Wrangler Workshop Manual page 505

ENGINES
FUEL FEEDBACK SYSTEMS
CONTINUED FROM PREVIOUS PAGE
Y E S
NO
TURN IGNITION SWITCH TO ON
POSITION WITHOUT STARTING
ENGINE T E S T MCU CONNECTOR
PIN 1 AND GROUND FOR
BATTERY VOLTAGE TURN
SWITCH O F F
REPAIR OPEN WIRE AND
RETEST
REPAIR OPEN WIRE AND
RETEST
T E S T MCU CONNECTOR PIN 58 AND
THE S TERMINAL O F THE STARTER
SOLENOID FOR CONTINUITY
Y E
5
REPAIR OPEN WIRE AND
RETEST
REPLACE MCU AND
RETEST
'NOTE: B E F O R E REPLACING MCU. IF
ENGINE FAILS TO START, C H E C K FOR
FAILURE OF IGNITION MODULE. COIL.
DISTRIBUTOR. E T C R E F E R TO
IGNITION S Y S T E M S - CHAPTER C
83085B(J)