Heated seat prob, help!!
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Heated seat prob, help!!
Drivers side heated seat wont turn on. When i turn the key on the the lights in the drivers side heated seat switch blink on and off for a few moments and then go blank. Drivers side will not work, passenger's works normally. Checked fuses, OK there, any ideas???
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Joined: Apr 2007
Posts: 497
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From: Manteca, CA
According to the diagnostic diagram:
Both Hi and Low indicators flashing, problem is shorted heated seat element.
Hi flashing, Low off, Heated seat element open.
Low flashing, Hi off, Only one element open.
That gives you a starting point to trace the problem.
First thing is to check all connections to see if one is loose.
The following is from the repair manual section:
HEATED SEAT SYSTEM BASE DIAGNOSIS
NOTE: Before testing the individual components in the heated seat system, check the vehicles battery open-circuit voltage and charging system performance. If the vehicles electrical system is defective or weak it may not be supplying sufficient energy to operate the heated seat system.
For complete circuit diagrams, refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, details of wire harness routing and retention, connector pin-out information and location views for the various wire harness connectors, splices and grounds.
PRELIMINARY TEST
² If a single LED indicator lamp for one heated seat switch/module does not operate and the heated seat elements heat, replace the switch with the inoperative indicator lamp (Refer to 8 - ELECTRICAL/HEATED SEATS/SEAT SWITCH - REMOVAL).
² If both LED indicator lamps for a heated seat switch/module operate, but the heated seat elements do not heat, (Refer to 8 - ELECTRICAL/HEATED SEATS/HEATED SEAT ELEMENT - DIAGNOSIS AND TESTING) to check the suspect heated seat elements. If the elements test OK, proceed to Step 1.
² If both seats (driver and passenger) fail to heat and the indicator lamps on the heated seat switch/modules for both seats fail to operate, test the heated seat fuses in the Integrated Power Module (IPM). If the heated seat fuses check OK, go to Step 1.
DRIVER HEATED SEAT SWITCH/MODULE
1. Remove the heated seat switch/modules, (Refer to 8 - ELECTRICAL/HEATED SEATS/SEAT SWITCH - REMOVAL).
2. Connect the battery negative cable.
3. Turn the ignition to the “RUN” position.
4. Check for battery voltage on terminals 4 and 6 of the switch/module connector of the inoperative seat. Battery voltage should be present on both terminals. If OK go to Step 5. If NOT OK repair the open or shorted fused B(+) circuit as required.
5. Check for continuity between ground terminal 1 of the switch/module connector of the inoperative seat and a good ground. If OK go to Step 6. If NOT OK, repair the open or shorted ground circuit as required.
6. Check for continuity between the heated seat element supply circuit terminal 3 of the switch/module connector of the inoperative seat and the heated
seat element connector of the inoperative seat. If OK go to Step 7. If NOT OK, repair the open or shorted supply circuit as required.
7. Perform the heated seat element diagnosis for the inoperative seat. (Refer to 8 - ELECTRICAL/HEATED SEATS/HEATED SEAT ELEMENT - DIAGNOSIS AND TESTING) to check the suspect heated seat elements. If the elements test OK, replace the inoperative heated seat switch/module.[/I]
Dan
Both Hi and Low indicators flashing, problem is shorted heated seat element.
Hi flashing, Low off, Heated seat element open.
Low flashing, Hi off, Only one element open.
That gives you a starting point to trace the problem.
First thing is to check all connections to see if one is loose.
The following is from the repair manual section:
HEATED SEAT SYSTEM BASE DIAGNOSIS
NOTE: Before testing the individual components in the heated seat system, check the vehicles battery open-circuit voltage and charging system performance. If the vehicles electrical system is defective or weak it may not be supplying sufficient energy to operate the heated seat system.
For complete circuit diagrams, refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, details of wire harness routing and retention, connector pin-out information and location views for the various wire harness connectors, splices and grounds.
PRELIMINARY TEST
² If a single LED indicator lamp for one heated seat switch/module does not operate and the heated seat elements heat, replace the switch with the inoperative indicator lamp (Refer to 8 - ELECTRICAL/HEATED SEATS/SEAT SWITCH - REMOVAL).
² If both LED indicator lamps for a heated seat switch/module operate, but the heated seat elements do not heat, (Refer to 8 - ELECTRICAL/HEATED SEATS/HEATED SEAT ELEMENT - DIAGNOSIS AND TESTING) to check the suspect heated seat elements. If the elements test OK, proceed to Step 1.
² If both seats (driver and passenger) fail to heat and the indicator lamps on the heated seat switch/modules for both seats fail to operate, test the heated seat fuses in the Integrated Power Module (IPM). If the heated seat fuses check OK, go to Step 1.
DRIVER HEATED SEAT SWITCH/MODULE
1. Remove the heated seat switch/modules, (Refer to 8 - ELECTRICAL/HEATED SEATS/SEAT SWITCH - REMOVAL).
2. Connect the battery negative cable.
3. Turn the ignition to the “RUN” position.
4. Check for battery voltage on terminals 4 and 6 of the switch/module connector of the inoperative seat. Battery voltage should be present on both terminals. If OK go to Step 5. If NOT OK repair the open or shorted fused B(+) circuit as required.
5. Check for continuity between ground terminal 1 of the switch/module connector of the inoperative seat and a good ground. If OK go to Step 6. If NOT OK, repair the open or shorted ground circuit as required.
6. Check for continuity between the heated seat element supply circuit terminal 3 of the switch/module connector of the inoperative seat and the heated
seat element connector of the inoperative seat. If OK go to Step 7. If NOT OK, repair the open or shorted supply circuit as required.
7. Perform the heated seat element diagnosis for the inoperative seat. (Refer to 8 - ELECTRICAL/HEATED SEATS/HEATED SEAT ELEMENT - DIAGNOSIS AND TESTING) to check the suspect heated seat elements. If the elements test OK, replace the inoperative heated seat switch/module.[/I]
Dan
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