B1D7B–SEAT HORIZONTAL MOTOR CONTROL CIRCUIT PERFORMANCE
For a complete wiring diagram Refer to Section 8W.
- When Monitored:
Whenever the seat motor is activated.
- Set Condition:
If the Memory Seat Module does not detect the rotation of the seat motor this DTC will set. This DTC will only set when the seat switch is moved in the same direction three consecutive times.
| Possible Causes |
| SEAT POSITION SENSOR CIRCUIT DIAGNOSTIC TROUBLE CODES |
| (G401) DRIVER SEAT HORIZONTAL POSITION SENSE CIRCUIT OPEN |
| (G491) DRIVER SEAT HORIZONTAL SENSOR GROUND CIRCUIT OPEN |
| (P115) DRIVER SEAT HORIZONTAL FORWARD DRIVER |
| (P117) DRIVER SEAT HORIZONTAL REARWARD DRIVER |
| DRIVER HORIZONTAL SEAT ADJUSTER MOTOR |
| MEMORY SEAT MODULE |
Diagnostic Test
1.CHECK FOR RELATED DIAGNOSTIC TROUBLE CODESDoes the scan tool display any seat position sensor DTC's?
Yes
- Diagnose and repair the other DTC(s) first. Refer to the Table of Contents in this Section for a complete list of symptoms.
No
- Go To 2
2.TEST FOR INTERMITTENT CONDITION
Does the scan tool display B1D7B–SEAT HORIZONTAL MOTOR CONTROL CIRCUIT PERFORMANCE?
Yes
- Go To 3
No
- The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
- Perform POWER SEAT SYSTEM VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/POWER SEATS - DIAGNOSIS AND TESTING)
3.CHECK THE (G401) DRIVER SEAT HORIZONTAL POSITION SENSE VOLTAGE
NOTE: Check connectors – Clean and repair as necessary.
Does the test light illuminate for approximately two seconds then turn off with the seat switch engaged?
Yes
- Go To 4
No
- Go To 5
4.CHECK THE DRIVER SEAT HORIZONTAL FORWARD/REARWARD DRIVER VOLTAGE
Does the test light illuminate with the seat switch engaged?
Yes
- Replace the track/horizontal motor assembly.
- Perform POWER SEAT SYSTEM VERIFICATION TEST – VER 1 (Refer to 8 - ELECTRICAL/POWER SEATS - DIAGNOSIS AND TESTING)
No
- Go To 7
5.CHECK THE (G401) DRIVER SEAT HORIZONTAL POSITION SENSE WIRE FOR AN OPEN
NOTE: Check connectors – Clean and repair as necessary.
Is the resistance above 1.0 ohm?
Yes
- Repair the (G401) Driver Seat Horizontal Position Sense circuit for an open.
- Perform POWER SEAT SYSTEM VERIFICATION TEST – VER 1 (Refer to 8 - ELECTRICAL/POWER SEATS - DIAGNOSIS AND TESTING)
No
- Go To 6
6.CHECK THE (G491) DRIVER SEAT HORIZONTAL SENSOR GROUND FOR AN OPEN
Is the resistance above 1.0 ohm?
Yes
- Repair the (G491) Driver Seat Horizontal Senor Ground circuit for an open.
- Perform POWER SEAT SYSTEM VERIFICATION TEST – VER 1 (Refer to 8 - ELECTRICAL/POWER SEATS - DIAGNOSIS AND TESTING)
No
- Replace the Memory Seat Module.
- Perform POWER SEAT SYSTEM VERIFICATION TEST – VER 1 (Refer to 8 - ELECTRICAL/POWER SEATS - DIAGNOSIS AND TESTING)
7.CHECK THE (P115) DRIVER SEAT HORIZONTAL FORWARD DRIVER WIRE FOR AN OPEN
NOTE: Check connectors – Clean and repair as necessary.
Is the resistance above 1.0 ohm?
Yes
- Repair the (P115) Driver Seat Horizontal Forward Driver circuit for an open.
- Perform POWER SEAT SYSTEM VERIFICATION TEST – VER 1 (Refer to 8 - ELECTRICAL/POWER SEATS - DIAGNOSIS AND TESTING)
No
- Go To 8
8.CHECK THE (P117) DRIVER SEAT HORIZONTAL REARWARD DRIVER FOR AN OPEN
Is the resistance above 1.0 ohm?
Yes
- Repair the (P117) Driver Seat Horizontal Rearward Driver circuit for an open.
- Perform POWER SEAT SYSTEM VERIFICATION TEST – VER 1 (Refer to 8 - ELECTRICAL/POWER SEATS - DIAGNOSIS AND TESTING)
No
- Replace the Memory Seat Module.
- Perform POWER SEAT SYSTEM VERIFICATION TEST – VER 1 (Refer to 8 - ELECTRICAL/POWER SEATS - DIAGNOSIS AND TESTING)