DTC B0090-B0098

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 Descriptors DTC B0090 Airbag Front End Discriminating Sensor - Left DTC B0091 Airbag Side Impact Sensor - Left Front Door DTC B0093 Airbag Side Impact Rear Sensor - Left DTC B0095 Airbag Front End Discriminating Sensor - Right DTC B0096 Airbag Side Impact Sensor - Right Front Door DTC B0098 Airbag Side Impact Rear Sensor - Right Circuit/System Description For an overview of the component/system, refer to: Supplemental Inflatable Restraint System Description and Operation

Circuit	Description
Signal	The control module input circuit has an internal resistance connected to 5 V.
Low Reference	Grounded through the control module.

Component	Description
B58 Front Impact Sensor	The impact sensors detect acceleration and provide input to the Restraints Control Module.
B63 Side Impact Sensor	The impact sensors detect acceleration and provide input to the Restraints Control Module.
K36 Restraints Control Module	The control module monitors several sensors that can detect a collision. When a collision is detected, the control module will trigger certain air bags and seat belt pretensioners, depending on the angle and severity of the impact.

Conditions for Running the DTC Ignition = On Ignition voltage = 9–16 V. Conditions for Setting the DTC Any of the following conditions exist for 10 seconds: B0090 49, B0091 49, B0093 49, B0095 49, B0096 49, B0098 49 The sensor has experienced an internal electrical failure. The sensor current is greater than 23 mA for greater than 5 milliseconds. B0090 4A, B0091 4A, B0093 4A, B0095 4A, B0096 4A, B0098 4A The sensor has been incorrectly installed or not responding. The Inflatable Restraints Control Module has not received a message from the sensor for greater than 375 milliseconds. Action Taken When the DTC Sets Air Bag Malfunction Indicator = On System State = Disabled 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. An ignition cycle is required for the DTC to go from current to history. Diagnostic Aid

Note

The following diagnostic aids apply for both current and history DTCs. Refer to SIR Disabling and Enabling. Thoroughly inspect the wiring and the connectors. An incomplete inspection of the wiring and the connectors may result in a misdiagnosis, causing a part replacement with a reappearance of the malfunction. If an intermittent malfunction exists, refer to Testing for Intermittent Conditions and Poor Connections. Reference Information Schematic Reference SIR Schematics Connector End View Reference Master Electrical Component List Description and Operation Supplemental Inflatable Restraint System Description and Operation Electrical Information Reference Circuit Testing Testing for Intermittent Conditions and Poor Connections Connector Repairs Wiring Repairs Scan Tool Reference Control Module References for scan tool information Circuit/System Verification

Note

The condition may be intermittent and require driving the vehicle, then reviewing the snapshot to verify resistance parameters do not drop out or spike. Refer to Testing for Intermittent Conditions and Poor Connections Refer to SIR Service Precautions. Refer to SIR Disabling and Enabling. Inspect all terminals for damage or corrosion when disconnecting connectors. Damage or corrosion in the following requires repair or replacement of the affected component/connector. – Impact sensor – Restraints Control Module – Restraints Control Module wiring harness connector The connector and connector position assurance (CPA) may seat independent of each other. Both the connector and CPA should seat with an audible and/or tactile click.

1. Ignition ON.
2. Verify that DTC B0090–B0098 symptom byte 49 or 4A is not set as current. ⇒ If DTC B0090–B0098 symptom byte 49 or 4A is set as current Replace the sensor listed below: B0090 — B58L Airbag Front End Discriminating Sensor-Left B0091 — B63LF Airbag Side Impact Sensor-Left Front Door B0093 — B63LR Airbag Side Impact Rear Sensor-Left Door B0095 — B58R Airbag Front End Discriminating Sensor-Right B0096 — B63RF Airbag Side Impact Sensor-Right Front Door B0098 — B63RR Airbag Side Impact Rear Sensor-Right Door ⇓ If DTC B0090–B0098 symptom byte 49 or 4A is not set as current
3. A fault is not currently present and may be an intermittent condition. Repair Instructions Perform the Diagnostic Repair Verification after completing the repair. Airbag Side Impact Sensor Replacement Airbag Side Impact Rear Sensor Replacement Airbag Front End Discriminating Sensor Replacement Control Module References for Restraints Control Module replacement, programming and setup SIR/SRS Wiring Repairs