Troubleshooting Hints - Memory Seats

PERFORM BEFORE BEGINNING SYSTEM DIAGNOSIS
1. Check the RH rear junction block PWR ST circuit breaker for continuity. If open, check for a short to ground in CKT 1340 (ORN).
2. Check the RH rear junction block I/P 1 Fuse by visual inspection for continuity. If open, check for a short to ground in CKT 40 (ORN).
3. Check the IP fuse block IGN 1 Fuse (Oldsmobile) or CHIME Fuse (Buick) by visual inspection. If open, check for a short to ground in CKT 39 (PNK).
4. Check the IP fuse block TMNSS Fuse by inspection. If open, check for a short to ground in CKT 139 (PNK).
5. For Oldsmobile, if the I/P 1 Fuse is blown, there is still an alternate battery positive voltage (B+) feed from the HZRD/STOP Fuse to the LH seat/lock switch, the LH seat switch, and the outside mirror switch. Therefore, these components may not be completely shut down.
6. If the seat motor internal circuit breaker trips, it will not reset until voltage is removed from the motor.
7. Make sure that G202 is clean and tight.
8. Seat back recline is not a part of the memory function, but manual movements are controlled by the memory seat/mirror control module. The module will chime during diagnostic mode 2 if the recline is tested for a discontinuity.
9. If the memory seat/mirror module does not enter the diagnostic modes:
^ Check for proper grounding with the memory seat diagnostic connector.
^ Check for an open in CKT 571 (YEL/BLK).
^ Check for proper cavity contact at memory seat/mirror module connector C1 cavity D12.
^ If all OK, replace the memory seat/mirror module.
10. Before component replacement, check for poor connections at related component and in-line harness connector cavity connections.
11. Check for broken (or partially broken) wire inside of the insulation which could cause a system malfunction but prove good in a continuity/voltage check with a system disconnected. These circuits may be intermittent or resistive when loaded, and if possible, should be checked by monitoring for a voltage drop with the system operational (under load).
12. Check for proper installation of aftermarket electronic equipment which may affect the integrity of other systems.