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Chrysler Total Integrated Power Module TIPM Fuel Pump Circuit Failure

Diagnosing, Testing & Repair

Chrysler models equipped with a total integrated power module or TIPM may exhibit a fuel pump relay control circuit failure. When the key is removed from the vehicle, the fuel pump will continue to run.

In this article & video the diagnosis and repair of the faulty internal fuel pump relay will be covered.

To confirm the symptom, check fuel pump activation with the vehicle OFF and the key removed from the ignition.

Working at the TIPM module in the engine compartment, remove the fuel pump fuse. Fuse M25 20 AMP, located in the TIPM.

Install the fuel pump fuse into a fuse breakout loop. Then install the test loop into the fuel pump fuse location.

Using a lab scope and a low Amp probe, measure fuel pump current. .

If fuel pump current is present with the engine off and key removed, the TIPM is faulty, activating the fuel pump when it should not

The internal relay in the TIPM is shorted and can be bypassed by installing an external relay.

Begin by removing the TIPM from the engine compartment.

An external relay breakout harness is available to bypass the faulty internal relay. The part kit will be specific to the VIN of the vehicle you are working on, however it is possible to modify a kit to be used in a vehicle with a TIPM fault without an available repair kit. Use the wiring diagram for the vehicle you are working on to determine terminal assignments and repair kit installation.

The part kit will be specific to the VIN of the vehicle you are working on, however it is possible to modify a kit to be used in a vehicle with a TIPM fault without an available repair kit. Use the wiring diagram for the vehicle you are working on to determine terminal assignments and repair kit installation.

Locate TIPM green 40 way connector.

Remove connector and harness protectors. Then carefully trim back wiring sheath exposing the wire harness. Be careful not to damage the wire insulation.

Locate TIPM black 50 way connector.

Remove harness protector and carefully trim back wiring sheath.

Locate TIPM brown 40 way connector.

Remove harness protector and carefully trim back wiring sheath.

Working at the brown 40 way connector, locate the dark blue / orange wire at terminal 10. This is the fuel pump power feed.

Using a small flatblade screwdriver, pry up the green connector lock and remove.

Working at terminal 38 pink / light green wire, use a small pick to unlock and hold the terminal lock while pulling the wire straight out of the connector.

Using wire strippers, strip back about 1/4 inch of insulation to expose the wire.

Cut the dark blue / orange wire at terminal 10. This is where the repair kit relay terminal 87 will connect.

Working at the black 50 way connector locate the brown wire. Cut this wire and strip back about ½ inch of insulation on harness side of wire.

Splice terminal 85 from the repair kit to terminal 38 pink / light green wire.

Solder splice together.

Install heat shrink tube with sealer over splice and heat and shrink until sealant escapes from each end.

Working at the black 50 way connector brown wire, connect and solder terminal 85 from repair kit to harness side of brown wire.

Working at the brown 40 way connector, locate the dark blue / orange wire at terminal 10, connect and solder terminal 87 from repair kit to harness side of brown wire.

Install terminal 38 pink / light green wire back into connector. Be sure terminal lock is engaged.

Install green connector lock, press in until fully seated.

Tape wiring harnesses and protective sheath, then reinstall connector protective covers.

Reinstall connector locking lever. Slide over connector and engage onto pivots.

Reinstall TIPM connectors, then install TIPM module in reverse order of removal.

Confirm TIPM is fully seated on mounting tabs.

Working at the terminal 30 connection on the repair kit, install heat shrink tube over wire. Then, crimp on an eyelet.

You can also add solder to the eyelet to further secure the connection. Heat and shrink until sealant escapes from each end.

Mount the repair kit relay to an accessible location. Our subject vehicle has a predrilled hole that will work well. Using the supplied self-tapping fastener, secure the relay in place.

Reconnect terminal 30 cable to the TIPM stud.

Next, install terminal 30 from the repair kit relay to the TIPM stud and tighten nut. Chrysler does not supply a fuse for this circuit, however we suggest adding an inline 25 amp fuse here.

Reassemble remaining items and start vehicle, then shut off and confirm fuel pump no longer runs with the engine off and the key removed from the vehicle.