1994 JEEP WRANGLER relay

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Page 87 of 1770

JEEP WRANGLER 1994  Owners Manual (3) Install new fuel pump outlet hose. Secure with
new clamps.
(4) Connect wire terminals to motor.
(5) Install new fuel pump inlet filter.
INSTALLATIONÐYJ MODELS
(1) Install a new fuel pump inlet fi

Page 99 of 1770

JEEP WRANGLER 1994  Owners Manual MULTI-PORT FUEL INJECTION (MFI)ÐCOMPONENT DESCRIPTION/SYSTEM
OPERATION
INDEX
page page
Air Conditioning (A/C) Clutch RelayÐPCM Output.24
Air Conditioning (A/C) ControlsÐPCM Input.... 19
Auto Shut D

Page 101 of 1770

JEEP WRANGLER 1994  Owners Manual ²Signal ground
Powertrain Control Module (PCM) Outputs
²A/C clutch relay
²Idle air control (IAC) motor
²Auto shut down (ASD) relay
²Generator field
²Malfunction indicator lamp
²Fuel injectors

Page 106 of 1770

JEEP WRANGLER 1994  Owners Manual AIR CONDITIONING (A/C) CLUTCH RELAYÐPCM
OUTPUT
The powertrain control module (PCM) activates the
A/C compressor through the A/C clutch relay. The
PCM regulates A/C compressor operation by switch-
ing

Page 107 of 1770

JEEP WRANGLER 1994  Owners Manual FUEL PUMP RELAYÐPCM OUTPUT
The PCM energizes the fuel pump through the fuel
pump relay. Battery voltage is applied to the relay
from the ignition switch. The relay is energized when
a ground is provi

Page 108 of 1770

JEEP WRANGLER 1994  Owners Manual ing the IAC motor pintle in and out of the air control
passage. The IAC motor is positioned when the igni-
tion key is turned to the On position.
A (factory adjusted) set screw is used to mechani-
cal

Page 109 of 1770

JEEP WRANGLER 1994  Owners Manual SPEED CONTROLÐPCM OUTPUT
Speed control operation is regulated by the power-
train control module (PCM). The PCM controls the
vacuum to the throttle actuator through the speed
control vacuum and vent

Page 110 of 1770

JEEP WRANGLER 1994  Owners Manual ²Intake manifold air temperature sensor input is
monitored
²Throttle position sensor (TPS) is monitored
²The auto shut down (ASD) relay is energized by
the PCM for approximately three seconds.
²Th
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