Heated Seat Switch Low Indicator Malfunction. Buick LeSabre 2003

For 1990-2009 cars only

Makes 🢒 Buick 🢒 2003 🢒 LeSabre 🢒 Body and Accessories 🢒 Seats 🢒 Heated Seat Switch Low Indicator Malfunction

Step	Action	Yes	No
Schematic Reference: Heated Seats Schematics
1	Did you perform the Diagnostic System Check - Power Seat Systems?	Go to Step 2	Go to Diagnostic System Check - Power Seat Systems
2	Verify that the heated Seat Switch Low Indicator Malfunction is present. Does the heated seat switch low temperature indicator operate as described in the system description and operation?	Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems	Go to Step 3
3	Turn ON the ignition, with the engine OFF. Is the heated seat switch LO temperature indicator always on?	Go to Step 9	Go to Step 4
4	Turn ON the heated seat to the high heat position. Does the heated seat switch LO temperature indicator illuminate?	Go to Step 8	Go to Step 5
5	Turn OFF the ignition. Disconnect the heated seat switch harness connector. Connect a 3-amp fused jumper wire from the ground terminal of the heated seat switch to a good ground. Probe the low temperature indicator terminal of the heated seat switch with a test lamp that is connected to battery positive voltage. Does the heated seat switch LO temperature indicator illuminate?	Go to Step 6	Go to Step 11
6	Test the heated seat low temperature indicator control circuit between the heated seat switch and the door control module for a short to ground, a high resistance, or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems Did you find and correct the condition?	Go to Step 14	Go to Step 7
7	Test the heated seat control module status signal circuit between the rear integration module and the heated seat module for a short to battery voltage or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 14	Go to Step 10
8	Test the heated seat control module status signal circuit between the rear integration module and the heated seat module for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 14	Go to Step 10
9	Test the heated seat low temperature indicator control circuit between the heated seat switch and the door control module for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 14	Go to Step 10
10	Inspect the for poor connections at the harness connector of the door control module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 14	Go to Step 12
11	Inspect the for poor connections at the harness connector of the heated seat switch. Refer to Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 14	Go to Step 13
12	Replace the door control module. Refer to Door Control Module Replacement in Doors. Did you complete the replacement?	Go to Step 14	--
13	Replace the heated seat switch. Refer to Heated Seat Switch Replacement . Did you complete the replacement?	Go to Step 14	--
14	Operate the system in order to verify the repair. Did you correct the condition?	System OK	Go to Step 2