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DIAGNOSTIC CONNECTORS—4.2L
i
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D1
D2
Terminal
Function
1
Tach. Signal
2
Elec. Choke Switch
3
Ground
4
Start Signal
5
Idle Solenoid
6
Not Used
Terminal
Function
1
PCV Switch
2
Idle Vacuum Solenoid
3
0
2
Sensor
4
Ignition
5
Down Stream Solenoid
6
WOT Switch
7
Ground
8
Up Stream Solenoid
9
Vacuum Switch
10
Thermo-Electric Switch
11
Stepper Motor
12
Coolant Temperature Switch
13
Idle Relay
14
Stepper Motor
15
Vacuum Switch
1988 J E E P ®
WRANGLER/YJ
Part Number—8980 010 721
Copyright© 1987 American Motors Corporation.
All Rights Reserved, Litho in U.S.A.
SIDE 2 OF 4
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Troubleshooting
