Dodge ram truck 3500 1996 Service Manual page 1279

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DIAGNOSIS AND TESTING (Continued)
Fig. 38 Air Temperature Sensor—3.91 (V-6) Engine
Fig. 39 Air Temperature Sensor—5.2L/5.9L (V-8) Engines
Fig. 40 Sensor and IAC Motor Location—Typical
(¥-8 Shown)
FUEL SYSTEM 14 - 45
Fig. 41 Rubber L-Shaped Fitting—MAP Sensor-to-
Throttle Body-3.9U5.2U5.9L Engines
(17) Verify that fuel injector wire harness connec­
tors are firmly connected to injectors in the correct
order. Each harness connector is numerically tagged
with the Injector number (INJ 1, INJ 2 etc.) of its
corresponding fuel injector and cylinder number.
(18) Verify harness connectors are firmly con­
nected to idle air control (IAC) motor, throttle posi­
tion sensor (TPS) and manifold absolute pressure
(MAP) sensor (Fig. 40).
(19) Verify that wire harness connector is firmly
connected to the engine coolant temperature sensor
(Fig. 42).
Fig. 42 Engine Coolant Temperature Sensor—3.9U
5.2U5.9L Engines—Typical
(20) Raise and support the vehicle.
(21) On 3.9L/5.2L/5.9L LDC engines, verify that
both the upstream and downstream oxygen sensor
wire connectors are firmly connected to the sensors.
Inspect sensors and connectors for damage (Fig. 43).