DTC 034
DTC 024 or 034
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview)provides an overview of each diagnostic category.
DTC Descriptor
DTC 024
- Swivel Motor Hall Sensor Circuit Fault During Outward Rotation
DTC 034
- Swivel Motor Hall Sensor Circuit Fault During Inward Rotation
Diagnostic Fault Information
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
Rear Seat Schematics (Rear Seat Schematics)
Connector End View Reference
Component Connector End Views (Connector Views)
Description and Operation
Sit-N-Lift Mobility Seat Description and Operation (Sit-N-Lift Mobility Seat Description and Operation)
Electrical Information Reference
* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)
Scan Tool Reference
Control Module References (Programming and Relearning)for scan tool information
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the swivel motor.
2. Test for less than 1 ohm of resistance between the ground circuit terminal 4 and ground.
• If greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, test for B+ between the signal circuit terminal 6 and ground.
• 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.
4. Test for greater than 3 volts between the signal circuit terminal 5 and ground.
• 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.
5. If all circuits test normal, test and replace the swivel motor.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
* Sit-N-Lift Seat Base Replacement (Sit-N-Lift Seat Base Replacement)
* Sit-N-Lift Control Module Replacement (Service and Repair)