LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Buick >> 1998 >> Riviera >> Repair and Diagnosis >> Accessories & Equipment >> Memory Modules >> Memory System >> System Tests >> Memory Functions Inoperative
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Memory Functions Inoperative

NOTE: After repair or component replacement is completed, perform appropriate MEMORY SYSTEM CHECK under TROUBLE SHOOTING  to verify system is functioning properly.
  1. Perform appropriate MEMORY SYSTEM CHECK under TROUBLE SHOOTING  . Go to next step
  2. Turn ignition switch to OFF position. Connect fused jumper to ground and memory seat/mirror diagnostic connector. Memory seat/mirror module will chime once to indicate Mode 1 has been entered. Operate MEMORY-1, MEMORY-2 and SET button on power mirror switch. Module will chime once at each switch input it receives. If any switch input does not cause a chime to sound, module did not receive an input from that switch, go to step 6). If all switch positions caused a chime to sound, go to next step.
  3. Disconnect ground from memory seat/mirror diagnostic connector, and then reconnect again within 5 seconds. Module should chime twice to indicate Mode 2 has been entered. Operate left seat switch in all positions. Module should chime once for each open or short circuit to a position sensor or any open in position sensor. If any switch position caused memory seat/mirror module chime to sound, go to next step. If any switch positions did not cause memory seat/mirror module to sound, go to step 7).
  4. Repair open or short in Gray wire between splice S323 and left outside mirror drive unit. See WIRING DIAGRAMS  . If circuit is okay, go to next step.
  5. Repair open or short in Black wire between power mirror drive units and seat positions sensors or memory seat/mirror module. See WIRING DIAGRAMS  . If circuit is okay, system is functioning properly. Perform POWER SEAT MEMORY SYSTEM CHECK under TROUBLE SHOOTING  . If symptom persists, replace memory seat/mirror module.
  6. Check for open in White wire, Purple wire or Orange wire between left seat/lock switch and memory seat/mirror module. See WIRING DIAGRAMS  . If circuits are okay, go to next step.
  7. Replace power mirror switch.