Dodge Dakota Sport 2001 Service Manual page 1358

AN
FUEL INJECTION (Continued)
DIAGNOSIS AND TESTING - VISUAL
INSPECTION—2.5L ENGINE
A visual inspection for loose, disconnected or incor-
rectly routed wires and hoses should be made. This
should be done before attempting to diagnose or ser-
vice the fuel injection system. A visual check will
help spot these faults and save unnecessary test and
diagnostic time. A thorough visual inspection will
include the following checks:
(1) Verify three 32–way electrical connectors are
fully inserted into connector of powertrain control
module (PCM) (Fig. 13).
Fig. 13 Powertrain Control Module (PCM)
1 - RIGHT FRONT FENDER
2 - PCM MOUNTING BOLTS (3)
3 - 32–WAY CONNECTORS (3)
4 - COVER
5 - POWERTRAIN CONTROL MODULE (PCM)
(2) Inspect battery cable connections. Be sure they
are clean and tight.
(3) Inspect fuel pump relay connections. Inspect
ASD relay connections. Inspect starter motor relay
connections. Inspect relays for signs of physical dam-
age and corrosion. The relays are located in Power
Distribution Center (PDC) (Fig. 14). Refer to label on
PDC cover for relay location.
(4) Inspect ignition coil connections. Verify coil sec-
ondary cable is firmly connected to coil (Fig. 15).
(5) Verify distributor cap is correctly attached to
distributor. Be sure spark plug cables are firmly con-
nected to distributor cap and the spark plugs are in
their correct firing order. Be sure coil cable is firmly
connected to distributor cap and coil. Be sure cam-
shaft position sensor wire connector (at the distribu-
Fig. 14 Power Distribution Center (PDC)
1 - POWER DISTRIBUTION CENTER (PDC)
Fig. 15 Ignition Coil—2.5L Engine
1 - IGNITION COIL
2 - ELECTRICAL CONNECTOR
3 - MOUNTING BOLTS (2)
4 - SECONDARY CABLE
tor) is firmly connected to harness connector. Inspect
spark plug condition. Refer to 8, Ignition. Connect
vehicle to an oscilloscope and inspect spark events
for fouled or damaged spark plugs or cables.
(6) Verify generator output wire, generator connec-
tor and ground wire are firmly connected to the gen-
erator.
(7) Inspect system body grounds for loose or dirty
connections. Refer to 8, Wiring for ground locations.
FUEL INJECTION 14 - 31