B1D63
B1D63-POWER SEAT SWITCH OPEN
For a complete wiring diagram, refer to the wiring information Electrical Diagrams.
- When Monitored:
With the ignition on.
- Set Condition:
When the Memory Seat Module detects an open Driver Seat Switch MUX circuit this code will set.
1. TEST FOR INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, erase all DTC's.
3. Press the Driver Seat Switch in all directions several times.
4. Wait one minute.
5. With the scan tool, read DTC's.
Does the scan tool display active: B1D63-POWER SEAT SWITCH OPEN?
Yes
- Go To 2
No
- The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.
- Perform POWER SEAT SYSTEM VERIFICATION TEST. Power Seat System Verification Test.
2. (P309) DRIVER SEAT HORIZONTAL/REAR RISER SWITCH MUX CIRCUIT OPEN
1. Turn the ignition off.
2. Disconnect the Driver Seat Switch.
3. Disconnect the Memory Seat Module C3 harness connector.
4. Measure the resistance of the (P309) Driver Seat Horizontal/Rear Riser Switch MUX between the Driver Seat Switch harness connector and the Memory Seat Module C3 harness connector.
Is the resistance below 3.0 ohms?
Yes
- Go To 3
No
- Repair the (P309) Driver Seat Horizontal/Rear Riser Switch MUX for an open.
- Perform POWER SEAT SYSTEM VERIFICATION TEST. Power Seat System Verification Test.
3. (P311) DRIVER SEAT FRONT RISER SWITCH MUX CIRCUIT OPEN
1. Measure the resistance of the (P311) Driver Seat Front Riser Switch MUX between the Driver Seat Switch harness connector and the Memory Seat Module C3 harness connector.
Is the resistance below 3.0 ohms?
Yes
- Go To 4
No
- Repair the (P311) Driver Seat Front Riser Switch MUX for an open.
- Perform POWER SEAT SYSTEM VERIFICATION TEST. Power Seat System Verification Test.
4. (P28) DRIVER SEAT SWITCH MUX RETURN CIRCUIT OPEN
1. Measure the resistance of the (P28) Driver Seat Switch MUX Return between the Driver Seat Switch harness connector and the Memory Seat Module C3 harness connector.
Is the resistance below 3.0 ohms?
Yes
- Go To 5
No
- Repair the (P28) Driver Seat Switch MUX Return circuit for an open.
- Perform POWER SEAT SYSTEM VERIFICATION TEST. Power Seat System Verification Test.
5. (P29) DRIVER SEAT SWITCH MUX SUPPLY CIRCUIT OPEN
1. Measure the resistance of the (P29) Driver Seat Switch MUX Supply between the Driver Seat Switch harness connector and the Memory Seat Module C3 harness connector.
Is the resistance below 3.0 ohms?
Yes
- Go To 6
No
- Repair the (P29) Driver Seat Switch MUX Supply for an open.
- Perform POWER SEAT SYSTEM VERIFICATION TEST. Power Seat System Verification Test.
6. CHECK THE DRIVER SEAT SWITCH CIRCUIT RESISTANCES TO GROUND
1. Measure the resistance between ground and each of the Driver Seat Switch circuits at the Driver Seat Switch harness connector.
Is the resistance above 10k ohms for each circuit?
Yes
- Go To 7
No
- Repair the circuit(s) that measured below 10k ohms for a short to ground.
- Perform POWER SEAT SYSTEM VERIFICATION TEST. Power Seat System Verification Test.
7. CHECK THE MSM SENSOR SUPPLY AND SENSOR RETURN
1. Reconnect the Memory Seat Module C3 harness connector.
2. Turn the ignition on.
3. Measure the voltage between the (P29) Driver Seat Switch MUX Supply circuit and the (P28) Driver Seat Switch MUX Return circuit at the Driver Seat Switch harness connector.
Is the voltage above 11.0 volts?
Yes
- Go To. 8
No
- Replace the Memory Seat Module.
- Perform POWER SEAT SYSTEM VERIFICATION TEST. Power Seat System Verification Test.
8. DRIVER SEAT HORIZONTAL SWITCH
1. Turn the ignition off.
2. Reconnect the Driver Seat Switch harness connector.
3. Turn the ignition on.
4. Backprobe and measure the voltage of the (P309) Driver Seat Horizontal Rear Riser Switch MUX circuit while moving the Driver Seat Switch horizontally and the rear riser up, down.
NOTE: The Voltage readings for all positions should be between 1.0 volt and 5.0 volts.
Is the voltage between 1.0 and 5.0 volts when the Driver Seat Switch is moved to each position?
Yes
- Go To 9
No
- Replace the Driver Seat Switch.
- Perform POWER SEAT SYSTEM VERIFICATION TEST. Power Seat System Verification Test.
9. DRIVER SEAT FRONT RISER SWITCH
1. Backprobe and measure the voltage of the (P311) Driver Seat Front Riser MUX circuit while moving the Driver Seat Front Riser Switch forward and rearward.
NOTE: The Voltage readings for all positions should be between 1.0 volt and 5.0 volts.
Is the voltage between 1.0 and 5.0 volts when the Driver Seat Switch is moved to each position?
Yes
- Replace the Memory Seat Module.
- Perform POWER SEAT SYSTEM VERIFICATION TEST. Power Seat System Verification Test.
No
- Replace the Driver Seat Switch.
- Perform POWER SEAT SYSTEM VERIFICATION TEST. Power Seat System Verification Test.