Heated Seat Inoperative

Step	Action	Values	Yes	No
Schematic Reference: Heated Seats Schematics
1	Did you review the Heated Seats Description and Operation and perform the necessary inspections?	-	Go to Step 2	Go to Symptoms - Seats
2	Operate the heated seat system. Does the system operate normally?	-	Go to TESTING FOR INTERMITTENT AND POOR CONNECTIONS	Go to Step 3
3	Turn ON the ignition, with the engine OFF. Disconnect the body to power seat inline harness connector. Connect a DMM from the heated seat switch signal circuit terminal in the body harness connector half to ground. Measure the voltage while activating the heated seat switch in the high and low modes. Is the measured voltage within the specified value while the switch is activated in the high and low modes?	10-14 V	Go to Step 4	Go to Step 6
4	Connect a test lamp from the battery voltage supply circuit 2340 terminal in the body harness connector half to a good ground. Does the test lamp illuminate?	-	Go to Step 5	Go to Step 13
5	Connect a test lamp from battery voltage to the ground circuit terminal in the body harness connector half. Does the test lamp illuminate?	-	Go to Step 9	Go to Step 14
6	Disconnect the heated seat switch connector. Connect a test lamp from the ignition voltage supply circuit terminal in the harness connector to a good ground. Does the test lamp illuminate?	-	Go to Step 7	Go to Step 15
7	Connect a test lamp from battery voltage to the ground circuit terminal in the heated seat switch harness connector. Does the test lamp illuminate?	-	Go to Step 8	Go to Step 16
8	Test the heated seat switch signal circuit for a open or short to ground. Refer to CIRCUIT TESTING and WIRING REPAIRS . Did you find and correct the condition?	-	Go to Step 20	Go to Step 11
9	Disconnect the power seat harness to seat cushion heater element assembly 3 way connector. Test the following circuits in the power seat harness for an open or short to ground: Battery voltage supply circuit 2340 Heated seat switch signal circuit Heated seat ground circuit Refer to CIRCUIT TESTING and WIRING REPAIRS .Did you find and correct the condition?	-	Go to Step 20	Go to Step 10
10	Disconnect the seat back heater element connector. Measure the resistance through the seat back heater element. Is the resistance within the specified values?	0.5-2.0 ohms	Go to Step 12	Go to Step 17
11	Inspect for poor connections at the harness connector of the heated seat switch. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS and to CONNECTOR REPAIRS . Did you find and correct the condition?	-	Go to Step 20	Go to Step 18
12	Inspect for poor connections at the heated seat harness connectors. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS and to CONNECTOR REPAIRS . Did you find and correct the condition?	-	Go to Step 20	Go to Step 19
13	Repair the heated seat battery voltage supply circuit for an open or short to ground. Refer to WIRING REPAIRS . Did you complete the repair?	-	Go to Step 20	-
14	Repair the heated seat ground circuit for an open or high resistance. Refer to WIRING REPAIRS . Did you complete the repair?	-	Go to Step 20	-
15	Repair the heated seat switch ignition voltage supply circuit for an open or short to ground. Refer to WIRING REPAIRS . Did you complete the repair?	-	Go to Step 20	-
16	Repair the heated seat switch ground circuit for an open or high resistance. Refer to WIRING REPAIRS . Did you complete the repair?	-	Go to Step 20	-
17	Replace the seat back heater element. Refer to Seat Back Heater Element Replacement - Front . Did you complete the repair?	-	Go to Step 20	-
18	Replace the heated seat switch. Refer to Heated Seat Switch Replacement - Front . Did you complete the repair?	-	Go to Step 20	-
19	Replace the seat cushion heater element assembly. Refer to and Seat Cushion Heater Element Replacement - Front . Did you complete the repair?	-	Go to Step 20	-
20	Operate the system in order to verify the repair. Did you correct the condition?	-	System OK	Go to Step 2