U0175-LOST COMMUNICATION W/RIGHT SIDE SATELLITE ACCELERATION SENSOR 1

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8443-32-L - Adapter, SRS Adapter Originally Shipped In Kit Number(s) 8443.

For a complete wiring diagram, refer to the Wiring Information.

Theory of Operation

The location of this right side impact sensor 1 is in the B-pillar just past the first row seating. (Refer to 10 - Restraints - Description) . The impact sensors perform their own self test using power supplied by the Occupant Restraint Controller (ORC) then communicate this status back to the ORC with periodic updates. The repair of this fault condition involves verifying the integrity of the wiring between the ORC and the sensor. If the scan tool shows this DTC has a Stored history of setting then the right side impact sensor is to be replaced. A short to voltage fault on the right side impact sensor 1 sensor wiring can cause a loss of comm impact sensor 2 code to set and the possible replacement of a good right side impact sensor 2. The right side impact 1, and 2 sensors are wired in a daisy chain pattern. The short to battery fault in a loss of comm or internal circuit failure of the side impact sensor 1 can cause the impact sensor 2 on the same side to set a loss of comm code.

• When Monitored:

  The Occupant Restraint Controller (ORC) continuously communicates with the Right Side Impact Sensor 1 over the sensor signal circuit. The sensor communication and on board diagnostics are powered by the ORC signal.

• Set Condition:

  This code will set, if the ORC and the Right Side Impact Sensor 1 do not establish and maintain valid data communications.

1. VERIFY THAT DTC U0175-LOST COMMUNICATION W/RIGHT SIDE SATELLITE ACCELERATION SENSOR 1

• Check for all other internal and lost communication codes indicated in the right side impact sensor daisy chain wiring, starting with B1B75-RIGHT SIDE SATELLITE ACCELERATION SENSOR 1 INTERNAL, then DTC U0175-LOST COMMUNICATION W/RIGHT SIDE SATELLITE ACCELERATION SENSOR 1. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Diagnosis and Testing). Then Go To 2

• Go To 9

2. CHECK THE (R14) AND (R16) RIGHT SIDE IMPACT SENSOR 1 CIRCUITS FOR A SHORT TO VOLTAGE

• WARNING:

  Turn the ignition off, disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.

• Repair the (R14) and (R16) Right Side Impact Sensor 1 circuits for a short to voltage.
• Perform the AIRBAG SYSTEM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure).

• Go To 3
  

3. CHECK THE (R14) AND (R16) RIGHT SIDE IMPACT SENSOR 1 CIRCUITS FOR A SHORT TO GROUND

• Repair the (R14) Right Side Impact Sensor 1 Signal or (R16) Right Side Impact Sensor 1 Ground circuit for a short to ground.
• Perform the AIRBAG SYSTEM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure).

• Go To 4
  

4. CHECK THE (R14) AND (R16) RIGHT SIDE IMPACT SENSOR CIRCUITS FOR A SHORT TOGETHER

• Repair the (R14) and (R16) Right Side Impact Sensor 1 circuits shorted together.
• Perform the AIRBAG SYSTEM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure).

• Go To 5
  

5. CHECK THE (R16) RIGHT SIDE IMPACT SENSOR 1 GROUND CIRCUIT FOR AN OPEN OR HIGH RESISTANCE

• Go To 6

• Repair the (R16) Right Side Impact Sensor 1 Ground circuit for an open or high resistance.
• Perform the AIRBAG SYSTEM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure).
  

6. CHECK THE (R14) RIGHT SIDE IMPACT SENSOR 1 CIRCUIT FOR AN OPEN OR HIGH RESISTANCE

• Go To 7

• Repair the (R14) Right Side Impact Sensor 1 Signal circuit for an open or high resistance.
• Perform the AIRBAG SYSTEM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure).
  

7. CHECK OPERATION OF THE RIGHT SIDE IMPACT SENSOR 1

• Go To 8

• Repair is complete.
• Perform the AIRBAG SYSTEM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure).

8. REPLACE THE OCCUPANT RESTRAINT CONTROLLER

• WARNING:

  If the Occupant Restraint Controller (ORC) is dropped at any time, it must be replaced. Failure to follow these instructions may result in possible serious or fatal injury.

• Replace the Occupant Restraint Controller in accordance with Service Instructions.
• Perform the AIRBAG SYSTEM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure).

9. TEST FOR AN INTERMITTENT CONDITION

• (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Diagnosis and Testing) and perform the appropriate diagnostic procedure.

• No problem found at this time. Erase all codes before returning vehicle to customer.