Diagnostic Instructions
DTC Descriptor
DTC 034: Wet Seat Fault
Circuit/System Description
The inflatable restraint passenger presence system (PPS) has several flexible conductive metal strips placed underneath the seat cushion trim. These sensor strips transmit and receive a low-level electric field. If the seat is saturated with liquid, the
PPS will detect a low resistance value between these sensor strips and set DTC 034. The PPS module illuminates the PASSENGER AIR BAG OFF indicator and notifies the sensing and diagnostic module (SDM) that a fault is present when the DTC sets. The SDM
will set DTC B0081 indicating a PPS fault and request the instrument panel cluster (IPC) to illuminate the AIR BAG indicator. The SDM will also disable the deployment of the I/P inflator module. In some conditions DTC 056 will set along with DTC 034.
DTC 034 should be diagnosed first.
Conditions for Running the DTC
Ignition voltage is between 9-16 volts.
Conditions for Setting the DTC
| • | Seat or seat trim/foam is saturated with liquid. |
| • | Low resistance values between sensor strips. |
Action Taken When the DTC Sets
| • | The PPS will set a DTC 034 and communicate to the SDM that a PPS DTC has set. |
| • | The PPS will also set DTC 056 indicating that a PPS internal system fault has occurred. DTC 052 will remain current until the rezeroing procedure has been successfully performed. |
| • | The SDM will set DTC B0081. |
| • | The SDM disables the I/P inflator module deployment loop. |
| • | The PPS will illuminate the PASSENGER AIR BAG OFF indicator. |
| • | The SDM requests the IPC to illuminate the AIR BAG indicator and display the message "Service Air Bag." |
Conditions for Clearing the DTC
| • | The condition for setting the DTC no longer exists. |
| • | A history DTC will clear once 100 malfunction-free ignition cycles have occurred. |
Diagnostic Aids
This fault indicates that the seat or seat trim/foam is saturated with liquid. If this DTC sets, verify the wet seat condition, let dry and verify if the fault returns. If DTC 056 is set along with DTC 034, diagnose the wet seat fault first.
Reference Information
Schematic Reference
SIR Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
SIR System Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information.
Circuit/System Verification
Important: If the DTC resets after rezeroing, it may be necessary to perform this rezeroing procedure several times.
- Ignition OFF, remove the PPS and passenger seat bottom cushion assembly and allow to air dry approximately 48 hours.
- Reinstall the PPS and perform the PPS Rezeroing procedure. Refer to
Passenger Presence System Rezeroing.
- Ignition ON, verify DTC 034 is not set as current. Refer to
Passenger Presence System Flash Code Procedures.
| ⇒ | If DTC 034 is set as current, replace the PPS. |
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic procedure.
