2014 Jeep Grand Cherokee Heardlight Wiring Diagram

You have a Canadian vehicle?

"Vehicles manufactured for sale in Canada and equipped with halogen headlamps illuminate both low beam headlamp bulbs at a reduced intensity when the engine is running, the parking brake is released, the automatic transmission gear selector is not in the PARK position and the exterior lamps are turned OFF. Under the same conditions, vehicles manufactured for U.S. fleet sales and equipped with halogen headlamps illuminate both high beam headlamp bulbs at a reduced intensity. On vehicles equipped with High Intensity Discharge (HID) headlamps regardless of the market, the TIPM operates a dedicated DRL bulb (domestic markets) or a combined position/DRL bulb (export markets) through right and left DRL relays to serve as the DRL.

The TIPM must be programmed appropriately for this feature to be enabled. Once enabled, anytime the TIPM receives electronic messages over the CAN data bus from the Powertrain Control Module (PCM) indicating the engine is running, from the EMIC indicating the status of the headlamp exterior lighting input is OFF or A (Automatic) and indicating that the parking brake is released, the TIPM provides a pulse width modulated voltage output to the proper headlamp bulbs or provides a path to ground for the DRL relays to produce DRL illumination at the proper intensity. "

"Vehicles equipped with optional front fog lamps include a front fog lamp switch integral to the headlamp switch on the instrument panel. The front fog lamps have a path to ground at all times through their connection to the Front End Module (FEM) wire harness. The FEM wire harness has takeouts with eyelet terminals that are secured by ground screws to the body sheet metal within the engine compartment. The EMIC monitors a hard wired multiplex input from the headlamp switch to determine whether the fog lamps are selected, then sends electronic fog lamp switch request messages to the TIPM over the CAN data bus.

When the TIPM receives a fog lamp switch request message it then controls front fog lamp operation by providing a battery voltage output to the fog lamps through the right and left front fog lamp control circuits. The TIPM also sends the appropriate electronic message back to the EMIC to illuminate or extinguish the front fog lamp indicator. The TIPM will automatically de-energize the front fog lamps any time the headlamp high beams are selected.

The TIPM also provides a battery saver (load shedding) feature for the front fog lamps, which will turn these lamps OFF if they are left ON for more than about eight minutes after the electronic ignition switch status messages from the WIN transition to LOCK, if there is a charging system failure or if the electrical system voltage falls below about 11.75 volts for more than about 30 seconds.

Each front fog lamp includes an integral adjustment thumbwheel to be used for static aiming of the fog lamp beams. "

Here is an example of what you will find in the FSM for the fog lights: The Totally Integrated Power Module (TIPM) receives a bus message requesting fog lamp illumination. When this bus message is received, the TIPM provides a voltage output through the front fog lamp control output circuit. The front fog lamp control output circuit connects to the both the Left and Right Front Fog Lamps. Separate ground circuits are used for the Left and Right Front Fog Lamps. Note that When the Totally Integrated Power Module (TIPM) detects either a high or low condition on the (L90) Front Fog Lamp Driver circuit it sets a fault.
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Source: https://www.jeepforum.com/forum/f309/wiring-schematics-diagrams-3443874/

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