Mt Up-Shift Test - Jeep 1987 Wrangler Workshop Manual

mG
THROTTLE BODY FUEL INJECTION SYSTEM
Til G mG
1.4L 1986-1987/1.7L/2.46L
Til G
Ml
U P - S H I F T T E S T
START THE ENGINE AND OBSERVE THE UP-SHIFT INDICATOR LAMP.
DISCONNECT THE TRANSMISSION
4TH OR 5TH GEAR SWITCH.
REPAIR THE SHORT CIR-
CUIT TO GROUND IN THE
WIRE HARNESS BETWEEN NO
THE TRANSMISSION AND
THE LAMP REPEAT THE
TEST
YES
\
REPLACE THE
SWITCH AND RE-
PEAT THE TEST.
SHIFT THE
TRANSMISSION
TO NEUTRAL
POSITION AND
REPEAT THE
TEST.
YES
TEST THE SWITCH FOR A
SHORT CIRCUIT TO
GROUND.
TEST THE TRANSMISSION
SWITCH FOR CONTINUITY
WITH THE TRANSMISSION
IN THE NEUTRAL POSITION.
CONNECT THE SWITCH
CONNECTOR. TURN THE
IGNITION SWITCH OFF.
DISCONNECT THE ECU
WIRE HARNESS CONNEC-
TOR. TURN THE IGNITION
SWITCH ON.
REPAIR THE
SHORT CIRCUIT
TO GROUND IN
THE WIRE HAR-
NESS BETWEEN
THE ECU AND THE
TRANSMISSION
SWITCH.
REPLACE THE
BULB AND RE-
PEAT THE TEST.
REPLACE THE SWITCH AND
REPEAT THE TEST.
TEST FOR BATTERY VOLT-
AGE AT THE BULB SOCKET.
YES
REPLACE THE
ECU AND REPEAT
THE TEST.
REPAIR THE WIRE
HARNESS OPEN CIRCUIT
AND REPEAT THE TEST.
CONTINUED ON THE NEXT PAGE CONTINUED ON THE NEXT PAGE
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