Recliner Sensor Out Of Range Low

Monitored & Set Condition

1. When Monitored: Ignition on.
2. Set Condition: This condition is immediately set when the seat motor potentiometer feeds a value lower than the Memory Heated Seat/Mirror Module has stored in EEPROM.

Possible Causes:

• Recliner Position Signal Circuit Open
• Recliner Position Signal Circuit Short To Ground
• Seat Sensor 5-Volt Supply Short To Ground
• Seat Sensor 5-Volt Supply Open
• Recliner Position Sensor Low
• Memory Heated Seat Mirror Module

Testing

1. Turn ignition off. Ensure Memory Heated Seat/Mirror Module (MHSMM) is properly connected. Disconnect driver seat recliner motor sensor connector. Turn ignition on. Measure voltage on terminal driver seat recliner motor sensor connector "A", seat sensor 5-volt supply circuit (Brown/White wire). See Figure . If voltage is 4.5 volts or less, go to next step. If voltage is more than 4.5 volts, leave driver seat recliner motor sensor connector disconnected and go to step  4 .
2. Turn ignition off. Disconnect MHSMM connector C2. Measure resistance between ground and MHSMM connector C2 terminal No. 6, 5-volt supply circuit (Brown/White wire). See Figure . If resistance is less than 100 ohms, repair short to ground in Brown/White wire. If resistance is 100 ohms or more, leave MHSMM connector disconnected and go to next step.
3. Disconnect driver seat recliner motor sensor connector. Measure resistance in seat sensor 5-volt supply circuit (Brown/White wire) between driver seat recliner motor sensor connector terminal "A" and MHSMM connector C2 terminal No. 6. See Figure and Figure . If resistance is less than 100 ohms, repair short to ground in Brown/White wire. If resistance is 100 ohms or more, replace MHSMM. See MEMORY HEATED SEAT/MIRROR MODULE  under REMOVAL & INSTALLATION.
4. Turn ignition off. Disconnect Memory Heated Seat/Mirror Module (MHSMM) connector C1. Measure resistance between ground and MHSMM connector C1 terminal No. 16, recliner position sensor circuit (Light Blue wire). See Figure . If resistance is less than 100 ohms, repair short to ground in Light Blue wire. If resistance is 100 ohms or more, leave connectors disconnected and go to next step.
5. Measure resistance of recliner position senor circuit (Light Blue wire) between driver seat recliner motor sensor connector terminal "B" and MHSMM connector C1 terminal No. 16. See Figure and Figure . If resistance is less than 5 ohms, leave driver seat recliner motor sensor connector disconnected and go to next step. If resistance is 5 ohms or more, repair open in Light Blue wire.
6. Ensure ignition is off. Ensure MHSMM connector is properly connected. Connect scan tool to Data Link Connector (DLC). Connect a fused jumper wire between driver seat recliner motor sensor connector terminal "A", seat sensor 5-volt supply circuit (Brown/White wire) and terminal "B", recliner position sensor circuit (Light Blue wire). Using scan tool, monitor RECLINER RISER POSITION SENSOR voltage. Turn ignition on. If voltage is more than 4.5 volts, replace seat track assembly. See POWER SEATS article. If voltage is 4.5 volts or less, replace MHSMM. See MEMORY HEATED SEAT/MIRROR MODULE  under REMOVAL & INSTALLATION.