Chrysler New Yorker. Manual — part 265
(4) Ensure the electrical connector is completely
attached to the idle air contact motor (Fig. 32).
(5) Ensure electrical connector is attached to the
throttle position sensor (Fig. 32).
(6) Verify the electrical connector is attached to
the engine coolant temperature sensor (Fig. 33) or
(Fig. 34).
(7) Ensure purge hose is connected to throttle
body.
(8) Ensure the vacuum hose is connected to the
Short Runner valve and the vacuum harness (Fig.
35).
(9) Ensure the Proportional Purge solenoid (Fig.
36) electrical connectors are attached to the solenoid.
(10) Inspect the air cleaner filter element. Replace
as necessary.
(11) Verify the 2 40-way connector is fully inserted
into the Powertrain Control Module (PCM) (Fig. 39).
Ensure the wires are not stretched or pulled out of
the socket.
Fig. 32 Idle Air Control Motor—2.7L Engine
Fig. 33 Engine Coolant Temperature Sensor—2.7L
Engine
Fig. 34 Engine Coolant Temperature Sensor—3.2/
3.5L Engine
Fig. 35 Short Runner Valve
300M
FUEL SYSTEM
14 - 35
DIAGNOSIS AND TESTING (Continued)
Fig. 36 Proportional Purge Solenoid
Fig. 37 Air Cleaner Housing
Fig. 38 Air Cleaner Element
Fig. 39 PCM Connectors
14 - 36
FUEL SYSTEM
300M
DIAGNOSIS AND TESTING (Continued)
(12) Ensure the accessory drive belt tension is cor-
rect.
(13) Check for loose or corroded connections at the
generator (Fig. 40).
(14) Check fuel supply tube connections for leaks.
(15) Verify electrical connector is attached to the
crankshaft position sensor (Fig. 41).
(16) Ensure the electrical connectors are attached
to the upstream heated oxygen sensors (Fig. 42) or
(Fig. 43).
Fig. 40 Generator
Fig. 41 Crankshaft Position Sensor
Fig. 42 Upstream Heated Oxygen Sensor
Fig. 43 Upstream Heated Oxygen Sensor
300M
FUEL SYSTEM
14 - 37
DIAGNOSIS AND TESTING (Continued)
(17) Ensure the electrical connectors are attached
to the downstream heated oxygen sensors(Fig. 44).
(18) Check for loose or corroded electrical connec-
tions at the starter motor (Fig. 45).
ASD AND FUEL PUMP RELAYS
The following description of operation and
tests apply only to the Automatic Shutdown
(ASD) and fuel pump relays. The terminals on the
bottom of each relay are numbered (Fig. 46) or (Fig.
47).
OPERATION
• Terminal number 30 is connected to battery volt-
age. For both the ASD and fuel pump relays, termi-
nal 30 is connected to battery voltage at all times.
• The PCM grounds the coil side of the relay
through terminal number 85.
• Terminal number 86 supplies voltage to the coil
side of the relay.
• When the PCM de-energizes the ASD and fuel
pump relays, terminal number 87A connects to termi-
nal 30. This is the Off position. In the off position,
voltage is not supplied to the rest of the circuit. Ter-
minal 87A is the center terminal on the relay.
• When the PCM energizes the ASD and fuel
pump relays, terminal 87 connects to terminal 30.
This is the On position. Terminal 87 supplies voltage
to the rest of the circuit.
TESTING
The following procedure applies to the ASD and
fuel pump relays.
(1) Remove relay from connector before testing.
(2) With the relay removed from the vehicle, use
an ohmmeter to check the resistance between termi-
nals 85 and 86. The resistance should be between 75
65 ohms.
Fig. 44 Downstream Heated Oxygen Sensors
Fig. 45 Starter Motor
Fig. 46 ASD and Fuel Pump Relay Terminals
Fig. 47 ASD and Fuel Pump Relay Terminals
14 - 38
FUEL SYSTEM
300M
DIAGNOSIS AND TESTING (Continued)
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