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Power Distribution: Diagnosis RAM Pickup 2500

Body Electrical 7 illustrations ~1221 words

DIAGNOSIS AND TESTING - INVERTER MODULE

For complete circuit diagrams, refer to the appropriate wiring information.

WARNINGDisable the airbag system before attempting any steering wheel, steering column, seat belt tensioner, side airbag or instrument panel component diagnosis or service. Disconnect and isolate the negative battery (ground) cable. Wait two minutes for the airbag system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the airbag system. Failure to follow these instructions may result in accidental airbag deployment and possible serious or fatal injury.
CONDITIONPOSSIBLE CAUSESCORRECTION
NO POWER AT THE 115 VOLT POWER OUTLET1. Fuse inoperative.1. Check Totally Integrated Power Module (TIPM) fuse number 29. Replace fuse, if required.
2. Power outlet connector damaged.2. Check for loose or corroded power outlet connector. Repair, if required.
3. Inverter module connector damaged.3. Check for loose or corroded inverter module connector. Repair, if required.
4. Wiring damaged.4. Check for shorted or open wires. Repair wiring, if required.
5. Inverter module ground damaged.5. Check for continuity between the inverter module and a known good ground. There should be continuity. Repair ground, if required.
6. Power outlet inoperative.6. Replace the power outlet.
7. Inverter module inoperative.7. Replace the inverter module.
8. Power outlet switch inoperative.6. Replace the accessory switch bank.

115 VOLT POWER OUTLET DIAGNOSIS

Scheme 14

Scheme 14: REMOVAL
Scheme 14: REMOVAL

Scheme 15

Scheme 15
Scheme 15

Scheme 16

Scheme 16
Scheme 16

Scheme 17

Scheme 17
Scheme 17
  1. Disconnect and isolate the negative battery cable.
  2. Release the seat cushion j-channel (1) from the seat frame to gain access to the power inverter module (2).
  3. Lift up on the seat cushion and remove the four power inverter mounting bracket retainers.
  4. Disconnect the power inverter electrical connector and remove the power inverter assembly from the vehicle.
  5. Remove the four screws holding the power inverter to the mounting bracket.
  6. Remove the power inverter.

DIAGNOSIS AND TESTING - CIGAR LIGHTER OUTLET

For complete circuit diagrams, refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, details of wire harness routing and retention, connector pin-out information and location views for the various wire harness connectors, splices and grounds.

  1. Check the fused B(+) fuse in the Integrated Power Module (IPM). If OK, refer to 2 . If not OK, repair the shorted circuit or component as required and replace the inoperative fuse.
  2. Turn the ignition switch to the Run position. Check for battery voltage at the fused B(+) fuse in the IPM. If OK, refer to 3 . If not OK, repair the open or short as required.
  3. Remove the cigar lighter knob and element from the cigar lighter outlet shell. Check for continuity between the inside circumference of the cigar lighter outlet shell and a good ground. there should be continuity. If OK, refer to 4 . If not OK, refer to 5 .
  4. Turn the ignition switch to the Run position. Check for battery voltage at the insulated contact located at the back of the cigar lighter outlet shell. If OK, replace the inoperative cigar lighter knob and element. If not OK, refer to 5 .
  5. Turn the ignition switch to the Off position. Disconnect and isolate the battery negative cable. Check for continuity between the ground circuit cavity of the cigar lighter wire harness connector and a good ground. There should be continuity. If OK, refer to 6 . If not OK, repair the open ground circuit to ground as required.
  6. Connect the battery negative cable. Turn the ignition switch to the Accessory or Run positions. Check for battery voltage at the fused B(+) circuit cavity of the cigar lighter wire harness connector. If OK, replace the inoperative cigar lighter outlet. If not OK, repair the open fused B(+) circuit to the IPM fuse as required.

Scheme 18

Scheme 18: REMOVAL
Scheme 18: REMOVAL

Scheme 19

Scheme 19
Scheme 19
  1. Disconnect and isolate the battery negative cable.
  2. Look inside and note position of the retaining bosses (2).
  3. Insert the (special tool #10246, Remover, Power Outlet) (1) into the retaining bosses (2) of the power outlet.
  4. Pull out the base through the mounting ring by gently rocking the tool.
  5. Disconnect the harness (1) from the power outlet (2).
  6. Set the base aside and remove the base mount ring.

DIAGNOSIS AND TESTING - 115 V POWER OUTLET

WARNINGBe sure to utilize the proper safety gloves rated at least at a 00 rating when working on any high voltage system. Failure to do so may result in serious or fatal injury. Proper use and care of rubber insulating gloves and sleeves are essential to user safety. Do not wear rings, watches, jewelry and sharp objects on your hands or arms, they will cause damage to the rubber gloves and sleeves.

Note. Before attempting any repair on a inverter circuits, check for Diagnostic Trouble Codes with the scan tool.

Note. B (+) range must be with 11.5 V DC to 16 V DC for inverter operation.

For complete circuit diagrams, refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, details of wire harness routing and retention, connector pin-out information and location views for the various wire harness connectors, splices and grounds.

  1. Check the fused B (+) fuse in the Integrated Power Module (TIPM). If OK, refer to 2 . If not OK, repair the shorted circuit or component as required and replace the inoperative fuse.
  2. Remove the instrument panel center bezel , disconnect the connector from the back of the 115 V power outlet. Refer to «BEZEL, Instrument Panel, Center , Removal»(ref-457777-S34461692702012030200000) and «BEZEL, Instrument Panel, Driver Side , Removal»(ref-457777-S05792662012012030200000) . Turn the ignition switch to the RUN position and press the inverter ON switch. Switch the multi-meter from D/C to A/C and check for 115 V at pin 1 and pin 4 in the harness connector. If OK, refer to 3 . If not OK, repair the open or short as required.
  3. Replace the 115 V power outlet. Refer to «OUTLET, Power, 115 V , Removal»(ref-457819-S16005465862012030200000) .

DIAGNOSIS AND TESTING - POWER OUTLET

For complete circuit diagrams, refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, details of wire harness routing and retention, connector pin-out information and location views for the various wire harness connectors, splices and grounds.

  1. Check the fused B(+) fuse in the Integrated Power Module (IPM). If OK, refer to 2 . If not OK, repair the shorted circuit or component as required and replace the inoperative fuse.
  2. Turn the ignition switch to the Run position. Check for battery voltage at the fused B(+) fuse in the IPM. If OK, refer to 3 . If not OK, repair the open or short as required.
  3. Remove the cigar lighter knob and element from the cigar lighter outlet shell. Check for continuity between the inside circumference of the cigar lighter outlet shell and a good ground. there should be continuity. If OK, refer to 4 . If not OK, refer to 5 .
  4. Turn the ignition switch to the Run position. Check for battery voltage at the insulated contact located at the back of the cigar lighter outlet shell. If OK, replace the inoperative cigar lighter knob and element. If not OK, refer to 5 .
  5. Turn the ignition switch to the Off position. Disconnect and isolate the battery negative cable. Check for continuity between the ground circuit cavity of the cigar lighter wire harness connector and a good ground. There should be continuity. If OK, refer to 6 . If not OK, repair the open ground circuit to ground as required.
  6. Connect the battery negative cable. Turn the ignition switch to the Accessory or Run positions. Check for battery voltage at the fused B(+) circuit cavity of the cigar lighter wire harness connector. If OK, replace the inoperative cigar lighter outlet. If not OK, repair the open fused B(+) circuit to the IPM fuse as required.

Scheme 20

Scheme 20: REMOVAL
Scheme 20: REMOVAL
  1. Disconnect and isolate the battery negative cable.
  2. Pull the cigar lighter knob and element (1) out of the cigar lighter receptacle base (6), or unsnap the protective cap from the power outlet receptacle base (6).
  3. Look inside the cigar lighter or power outlet receptacle base and note the position of the rectangular retaining bosses (3) of the mount that secures the receptacle base to the panel (4).
  4. Insert a pair of external snap ring pliers (5) into the cigar lighter or power outlet receptacle base and engage the tips of the pliers with the retaining bosses of the mount.
  5. Squeeze the pliers to disengage the mount retaining bosses from the receptacle base and, using a gentle rocking motion, pull the pliers and the receptacle base out of the mount.
  6. Pull the receptacle base away from the instrument panel far enough to access the instrument panel wire harness connector (2).
  7. Disconnect the instrument panel wire harness connector (2) from the cigar lighter or power outlet receptacle base (6).
  8. Remove the cigar lighter or power outlet mount from the instrument panel.

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