Diagnostic Test

WARNING: This page is about a different car, the 2012 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.

TEST FOR INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, record and erase DTCs.
3. Move the Seat Switch in the recliner position three times.
4. With the scan tool, read the active DTCs.
  Does the scan tool display B1D77-12-SEAT RECLINER POSITION SENSOR-CIRCUIT SHORT TO BATTERY?
  
  Yes
  - Go To 2.
  No
  - Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
  - Perform the POWER SEAT SYSTEM VERIFICATION TEST. Refer to STANDARD PROCEDURE - POWER SEAT SYSTEM VERIFICATION TEST .
CHECKING THE (G403) DRIVER SEAT RECLINER POSITION SENSE CIRCUIT

Fig 1: Measuring Voltage Between Driver Sense Circuit & Ground
Courtesy of CHRYSLER GROUP, LLC
1. Disconnect the Driver Seat Recliner Adjuster Motor harness connector.
2. Measure the voltage between the (G403) Driver Seat Recliner Position Sense circuit and ground.
  Is the voltage above 11 volts?
  
  Yes
  - Go To 3.
  No
  - Replace the Seat Adjuster Recliner Motor Assembly in accordance with the Service Information.
  - Perform the POWER SEAT SYSTEM VERIFICATION TEST. Refer to STANDARD PROCEDURE - POWER SEAT SYSTEM VERIFICATION TEST .
CHECKING THE (G403) DRIVER SEAT RECLINER POSITION SENSE CIRCUIT FOR A SHORT TO VOLTAGE

Fig 2: Measuring Voltage Between Driver Sense Circuit & Ground
Courtesy of CHRYSLER GROUP, LLC
1. Disconnect the MSMD C4 harness connector.
2. Measure the voltage between the (G403) Driver Seat Recliner Position Sense circuit and ground.
  Is the voltage above 11 volts?
  
  Yes
  - Repair the short to voltage in the (G403) Driver Seat Recliner Position Sense circuit.
  - Perform the POWER SEAT SYSTEM VERIFICATION TEST. Refer to STANDARD PROCEDURE - POWER SEAT SYSTEM VERIFICATION TEST .
  No
  - Go To 4.
MEMORY SEAT MODULE (MSMD)
1. Using the wiring diagram/schematic as a guide, inspect the wiring and harness connectors between the Driver Seat Recliner Adjuster Motor and the MSMD.
2. Look for any chafed, pierced, pinched, or partially broken wires.
3. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the Driver Seat Recliner Adjuster Motor and MSMD harness connectors.
4. Perform any Technical Service Bulletins that may apply.
  Were there any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the POWER SEAT SYSTEM VERIFICATION TEST. Refer to STANDARD PROCEDURE - POWER SEAT SYSTEM VERIFICATION TEST .
  No
  - Replace the MSMD in accordance with the Service Information.
  - Perform the POWER SEAT SYSTEM VERIFICATION TEST. Refer to STANDARD PROCEDURE - POWER SEAT SYSTEM VERIFICATION TEST .