Schematic Reference: Heated Seats Schematics

Did you perform the Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Power Seat Systems

Operate the heated seats.

Does the system operate normally?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

Is the inoperative heated seat on the passengers side?

Go to Step 4

Go to Step 6

1. Disconnect the passengers side heated seat switch.
2. Insert the seat belt buckle into the seat belt latch.
3. Connect a test lamp between battery positive voltage and CKT 238 at the heated seat switch connector, terminal D.

Did the test lamp illuminate?

Go to Step 5

Go to Step 6

1. Disconnect the passengers side seat belt switch connector under the seat cushion.
2. Insert the seat belt buckle into the seat belt latch.
3. Test for continuity across the seat belt switch connector.

Is continuity present across the seat belt switch connector with the seat belt buckle inserted into the seat belt latch?

Go to Step 19

Go to Step 18

1. Disconnect the inoperative heated seat switch.
2. Turn ON the ignition, with the engine OFF.
3. Connect a test lamp between CKT 41 at the inoperative heated seat switch connector and a good ground.

Did the test lamp illuminate?

Go to Step 7

Go to Step 14

Connect a test lamp between CKT 1350 at the heated seat switch connector and battery positive voltage.

Did the test lamp illuminate?

Go to Step 8

Go to Step 15

1. Reconnect the heated seat switch.
2. Disconnect the inoperative seat heater module.
3. Connect a test lamp between CKT 1501 and a good ground.
4. Turn ON the ignition, with the engine OFF.
5. Operate the heated seat switch to the HI and LOW positions.

Did the test lamp illuminate?

Go to Step 9

Go to Step 11

Connect a test lamp between CKT 2240 at the seat heater module connector and a good ground.

Did the test lamp illuminate?

Go to Step 10

Go to Step 16

Connect a test lamp between CKT 1350 at the heated seat element connector and battery positive voltage.

Did the test lamp illuminate?

Go to Step 13

Go to Step 17

Test CKT 1501 for an open, high resistance or a short to ground.

Did you find and correct the condition?

Go to Step 22

Go to Step 12

Inspect for poor connections at the harness connector of the inoperative heated seat switch. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

Did you find and correct the condition?

Go to Step 22

Go to Step 21

Inspect for poor connections at the harness connector of the inoperative seat heater module. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

Did you find and correct the condition?

Go to Step 22

Go to Step 20

Repair the open or short to ground in CKT 41 to the inoperative heated seat switch. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 22

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Repair the open in CKT 1350 at the inoperative heated seat switch. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 22

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Repair the open or short to ground in CKT 2240 at the inoperative seat heater module. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 22

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Repair the open in CKT 1350 at the inoperative seat heater module. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 22

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Repair the short to ground in CKT 238. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 22

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Replace the seat belt switch.

Did you complete the replacement?

Go to Step 22

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Replace the inoperative seat heater module.

Did you complete the replacement?

Go to Step 22

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Replace the inoperative heated seat switch.

Did you complete the replacement?

Go to Step 22

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2