Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptor
DTC 024: Swivel Motor Hall Sensor Circuit Fault During Outward RotationDTC 034: Swivel Motor Hall Sensor Circuit Fault During Inward Rotation
Diagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Swivel Motor Hall Sensor Supply Voltage | 024, 034 | 024, 034 | -- | -- |
Swivel Motor Hall Sensor Signal | 024, 034 | 024, 034 | 024, 034 | 024, 034 |
Swivel Motor Hall Sensor Ground | -- | 024, 034 | -- | -- |
Circuit/System Description
The mobility seat module monitors an input from a hall effect sensor in the rotation motor while the seat is being rotated in or out. The hall effect is a 12-volt 3-wire sensor and the signal circuit is referenced from battery voltage within the module.
Conditions for Running the DTC
| • | Battery voltage must be within 9-16 volts. |
| • | Seat operation is attempted from the forward facing position. |
Conditions for Setting the DTC
DTC 024
When rotating the seat to the outward position no hall effect sensor pulses are detected by the module.
DTC 034
When rotating the seat to the forward facing position no hall effect sensor pulses are detected by the module.
Action Taken When the DTC Sets
While the fault is current the module will not allow the seat to be extended outward but will allow rotation inward to the forward facing position.
Conditions for Clearing the DTC
The DTC may be cleared by removing the main power supply or ground from the seat module.
Reference Information
Schematic Reference
Connector End View Reference
Description and Operation
Sit-N-Lift Mobility Seat Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module Referencesfor scan tool information
Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the swivel motor.
- Test for less than 1 ohm of resistance between the ground circuit terminal 4 and ground.
- Ignition ON, test for B+ between the signal circuit terminal 6 and ground.
- Test for greater than 3 volts between the signal circuit terminal 5 and ground.
- If all circuits test normal, test and replace the swivel motor.
| ⇒ | If greater than the specified range, test the ground circuit for an open/high resistance. |
| ⇒ | If less than specified range, test the supply voltage circuit for a short to ground or an open/high resistance. If the circuit test normal, replace the seat control module. |
| ⇒ | If less than specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit test normal, replace the seat control module. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
