B1530

DTC B1530

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 B1530
- Discard Passenger Presence System 1

Circuit/System Description

When the ignition is turned ON, the inflatable restraint sensing and diagnostic module (SDM) performs tests to diagnose critical malfunctions within the passenger presence system (PPS) module. When the SDM has completed the power-up mode, the SDM will establish communication with the PPS module. The SDM will increase a fault counter with each ignition cycle that a fault exists with the PPS module. The SDM will lock out the PPS module after a predetermined ignition cycle count maximum has been reached.

Conditions for Running the DTC

Ignition voltage is between 9-16 volts.

Conditions for Setting the DTC

* The PPS module has a current fault.
* The PPS module fault counter in the SDM has reached 127 counts.

Action Taken When the DTC Sets

* The SDM disables the instrument panel (I/P) module deployment loop.
* The SDM commands the AIR BAG indicator ON via class 2 serial data.
* The SDM will lock out the malfunctioning PPS module.

Conditions for Clearing the DTC

* The PPS module has been replaced.
* The SDM has been replaced.

Diagnostic Aids

Important: DTC B0092 or DTC B0098 will set if the PPS has a malfunction, and has set any one of the following DTCs 023, 024, 063, 064, or 065. When DTC B0092 or DTC B0098 is present, it is important to check the PPS for any current DTC. Refer to Passenger Presence System Flash Code Procedures (Passenger Presence System Flash Code Procedures). If the PPS has any current DTC, address those DTC before performing this diagnostic procedure.


Any repair performed on the original PPS module will not clear DTC B1530.

Reference Information
Schematic Reference

SIR Schematics (AW9) (SIR Schematics (AW9))SIR Schematics (AK5 /AJ7) (SIR Schematics (AK5 /AJ7))
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

SIR System Description and Operation (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, replace the PPS module.
2. Ignition ON, verify B1530 is not current.

• If B1530 is current, replace the SDM.

Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

* SIR/SRS Wiring Repairs (Component Tests and General Diagnostics)
* Control Module References (Programming and Relearning)for SDM replacement, setup, and programming