Schematic Reference: Heated Seats Schematics

Did you review the Heated Seats Circuit Description and perform the necessary inspections?

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Go to Step 2

Go to Symptoms

Verify the fault is present.

Does the system operate normally?

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Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

1. Remove the inoperative heated seat switch.
2. Turn ON the ignition, with the engine OFF.
3. Backprobe cavity C (fused ignition positive voltage) (right seat), or cavity D (left seat) using a J 39200 digital multi-meter (DMM) and measure the voltage reading.

Does the voltage measure near the specified value?

11-14V

Go to Step 4

Go to Step 5

Test for an open ground circuit between cavity A (Passenger Heat Switch) or cavity B (Driver Heat Switch) and ground.

Did you find an open?

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Go to Step 7

Go to Step 6

1. Repair the open in the fused ignition positive voltage between the inoperative heated seat switch and IGN 3 fuse (located in the fuse block). Refer to Wiring Repairs in Wiring Systems.
2. If no open is found, test for short to ground. Refer to Testing for Short to Ground in Wiring Systems.

Did you find and correct the condition?

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Go to Step 8

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Replace the respective heated seat switch.

Did you complete the replacement?

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Go to Step 8

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Repair the open in the ground circuit from the respective heated seat switch and ground. Refer to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

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Go to Step 8

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Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Step 3