I have a 2004 Dodge 1500 4x4, 4.7L. Does anyone know if replacing a neutral safety switch/range sensor is easy or difficult or even something that should be attempted at home or best taken to the dealer?

10

Asked by Feb 09, 2015 at 02:04 PM about the 2004 Dodge Ram 1500 SLT Quad Cab SB 4WD

Question type: Maintenance & Repair

My truck won't start or even turn over.  Battery checks out fine, have tapped the starter
while trying to start and fuses appear good.

3 Answers

100,315

The range sensor is located inside the transmission. I would take it to the dealer or a good transmission shop.

4,515

you have a 45RFE trany ....the trans range sensor is part of the solenoid pack that sits on top of the valve body ...the pan will have to be removed and the valve body as well ...did you try starting the vehicle in neutral??did you test the starter relay for powers and grounds?.....here is the shop manual to test the relay DIAGNOSIS AND TESTING - STARTER RELAY The starter relay (TYPE 1 RELAY) is located in Power Distribution Center (PDC). Refer to PDC cover for relay identification and location. For complete starter relay wiring circuit diagrams, refer to 8, Wiring Diagrams. Remove starter relay from PDC. A relay in de-energized position should have continuity between terminals 87A and 30, and no continuity between terminals 87 and 30. If OK, go to Step 3. If not OK, replace faulty relay. Resistance between terminals 85 and 86 (electromagnet) should be 75 ± 5 ohms. If OK, go to Step 4. If not OK, replace faulty relay. Connect 12V battery to terminals 85 and 86. There should now be continuity between terminals 30 and 87, and no continuity between terminals 87A and 30. If OK, perform Relay Circuit Test that follows. If not OK, replace faulty relay. RELAY CIRCUIT TEST The relay common feed terminal cavity (30) is connected to battery voltage and should be hot at all times. If OK, go to Step 2. If not OK, repair open circuit to fuse in PDC as required. The relay normally closed terminal (87A) is connected to terminal 30 in the de-energized position, but is not used for this application. Go to Step 3. The relay normally open terminal (87) is connected to common feed terminal (30) in the energized position. This terminal supplies battery voltage to starter solenoid field coils. There should be continuity between cavity for relay terminal 87 and starter solenoid terminal at all times. If OK, go to Step 4. If not OK, repair open circuit to starter solenoid as required. The coil battery terminal (86) is connected to electromagnet in relay. It is energized when ignition switch is held in Start position. On vehicles with manual transmission, clutch pedal must be fully depressed for this test. Check for battery voltage at cavity for relay terminal 86 with ignition switch in Start position, and no voltage when ignition switch is released to On position. If OK, go to Step 5. If not OK with automatic transmission, check for open or short circuit to ignition switch and repair, if required. If circuit to ignition switch is OK, refer to Ignition Switch and Key Lock Cylinder . If not OK with a manual transmission, check circuit between relay and clutch pedal position switch for open or a short. If circuit is OK, refer to Clutch Pedal Position Switch in 6 , Clutch. The coil ground terminal (85) is connected to the electromagnet in the relay. On vehicles with manual transmission, it is grounded at all times. On vehicles with automatic transmission, it is grounded through park/neutral position switch only when gearshift selector lever is in Park or Neutral positions. Check for continuity to ground at cavity for relay terminal 85. If not OK with manual transmission, repair circuit to ground as required. If not OK with automatic transmission, check for pen or short circuit to park/neutral position switch and repair, if required. If circuit to park/neutral position switch is OK, refer to Park/Neutral Position Switch in 21, Transmission.

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10

Thank you so much for your answer. This is definitely going to the dealer.

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