Tail lights stay on?

Welcome to the forum. Have all trouble codes checked. Some of the national brand autostores used to check PO codes, not sure about manufacturer specific.

The tali lamps get voltage from the park lamps relay, located in the integrated power module. It's probably a long shot to suspect the relay, while possible. Ground for the coil side of relay is controlled by integrated power module. The integrated power module needs a request to ground the relay. The request would come from headlamp switch to instrument cluster, from there to the integrated power module. The problem could be anywhere along that circuit. A code might help locate.

Good afternoon,

The pin 86 of the relay in the diagram I posted is the ground. The TIPM or the fuse block is what controls this ground based on the input from the switch.

https://www.2carpros.com/articles/how-to-check-wiring

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Toy TIPM is a very common failure. This module is like a body control module.

Roy

INTEGRATED POWER MODULE

REMOVAL
1. Disconnect the negative and positive battery cables.
2. Unsnap cover and remove the B+ terminal nut from the integrated power module B+ terminal. Remove the B+ cable from the integrated power module.
3. Disconnect the gray connector from the integrated power module.

Fig. 2 DR Integrated Power Module
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4. Remove the integrated power module retaining bolt and screw (Fig. 2).

Fig. 3 Removing Integrated Power Module
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5. Grasp the integrated power module with two hands and slide the assembly in the direction shown (Fig. 3) to free the module from its mounting bracket. Position the assembly upside down to access the electrical connectors located on the bottom of the unit.
6. Disconnect the electrical connectors by depressing the locking tab and rotating the connector arm outboard, until the connector is free from the module assembly. Be certain to pull the connectors straight off.
7. Position the integrated power module on a bench and remove the four front control module retaining screws.
8. Disconnect the front control module by pulling it straight off the integrated power module.

INSTALLATION
1. Connect the front control module by pushing it straight on the integrated power module electrical receptacle.
2. Install the four front control module retaining screws. Torque to 30 in. lbs. +/- 5.

Fig. 4 Integrated Power Module Electrical Connections
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NOTE: Integrated power module electrical connectors are color coded to ease location reference (Fig.4).

3. Connect the electrical connectors by pushing straight on and rotating the connector arm inboard, until the connector is firmly locked in place on the module assembly

Fig. 5 Integrated Power Module Mounting Tabs
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4. Grasp the integrated power module with two hands and install the assembly on the battery tray (Fig. 5).
5. Install the integrated power module retaining bolt and screw.
6. Connect the gray connector on the integrated power module housing.
7. Install the B+ terminal cable and nut on the integrated power module B+ terminal. Snap the cover in place
8. Connect the negative and positive battery cables.

No, it is internal in the circuitry for the TIPM.

The module will have to be replaced.

Roy

No, there is nothing external to repair it as the issue is inside the TIPM.

The TIPM is the only solution. You can add a ground but you will be back to your original issue of them not turning off.

I would just do the repair correctly and replace the TIPM.

Roy

Just my opinion, it sounds like a faulty ground at the rear. A faulty ground can cause some weird things to happen.

Just to add diagram. G100, black wire is ground. Check and clean the ground connection. Go from there.

The light can't be independent because the headlights and tail lights get power from the same source, the switch. What type of set up do you have? Has anyone checked the switch itself?