Front Riser Down Position Stuck

Monitored & Set Condition

1. When Monitored: Ignition on.
2. Set Condition: If the seat switch is active for 30 seconds, this code will set and the MHSMM will ignore the input until the state has changed. Once the stuck condition is removed, the seat will resume to normal operation. Code will remain for 20 ignition cycles.

Possible Causes:

• Seat Front Down Switch Sense Wire Short To Voltage
• Driver Power Seat Switch
• Memory Heated Seat Mirror Module

Testing

1. Turn ignition off. Disconnect power seat switch connector. Turn ignition on. Measure voltage on power seat switch connector terminal No. 6, seat front down switch sense circuit (Red/Light Green wire). See Figure . If any voltage exists, leave power seat switch connector disconnected and go to next step. If no voltage exists, replace power seat switch. See POWER SEATS article.
2. Turn ignition off. Disconnect Memory Heated Seat/Mirror Module (MHSMM) connector C1. Turn ignition on. Measure voltage on MHSMM connector C1 terminal No. 8, seat front down switch sense circuit (Red/Light Green wire). See Figure . If any voltage exists, repair short to voltage in Red/Light Green wire. If no voltage exists, replace MHSMM. See MEMORY HEATED SEAT/MIRROR MODULE  under REMOVAL & INSTALLATION.