2010 Cadillac Truck SRX FWD V6-3.0L Page 182

* Impact sensor wiring harness connector

* SDM wiring harness connector

Note: 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. The CPA isolates the shorting-bars within the connector allowing the deployment circuit to operate properly. Replace

any CPA that is damaged or missing.

If the condition is intermittent or cannot be duplicated, disconnect the connectors and add Nyogel lubricant 760G. This procedure will correct the

high resistance condition due to terminal fretting corrosion.

1. Verify that DTC B0083-B0088 symptom byte 39 or 71 is not set as current.

瀚慖f symptom byte 39 or 71 is set as current, replace the appropriate B59 front impact sensor or B63 side impact sensor.

2. Verify that the SDM calibrations match the VIN data, software part number, and calibration part number.

瀚慖f not the correct data or part number, program the SDM.

3. Verify the correct impact sensors have the correct part numbers, matching the label part numbers with the parts book.

瀚慖f the part numbers do not match, replace the incorrect B59 front impact sensor or B63 side impact sensor

4. Verify that DTC B0083-B0088 symptom byte 01, 02, 04, 05, or 0C is not set as current.

瀚慖f symptom byte 01, 02, 04, 05, or 0C is set as current, refer to Circuit/System Testing.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the appropriate B59 front impact sensor or B63 side impact sensor.

2. Ignition OFF, disconnect the scan tool, wait 120 seconds, test for less than 10 ohm between the low reference circuit terminal 2 and ground.

瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K36

SDM.

3. Test for greater than 50k ohm between the signal circuit terminal 1 and ground.

瀚慖f less than the specified value, test the signal circuit for a short to ground. If the circuit tests normal, replace the K36 SDM.

4. Disconnect the harness connector at the SDM.

5. Test for less than 1 ohm between the impact sensor signal circuit terminal 1 and the SDM terminal listed below.

* B59 Left front impact sensor terminal 23 X2

* B59 Right front impact sensor terminal 26 X2

* B63 Left front side impact sensor terminal 19 X2

* B63 Right front side impact sensor terminal 22 X2

* B63 Left rear side impact sensor terminal 27 X2

* B63 Right rear side impact sensor terminal 30 X2

瀚慖f greater than the specified range, test the circuit for an open/high resistance.

6. If all circuits test normal, replace the B59 front impact sensor or B63 side impact sensor. The DTC should not be set as current.

瀚慖f the DTC resets as current, replace the K36 SDM.

Repair Instructions

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

* Inflatable Restraint Side Impact Sensor Replacement (See: Restraints and Safety Systems/Air Bag Systems/Impact Sensor/Service and

Repair/Inflatable Restraint Side Impact Sensor Replacement)

* Front End Inflatable Restraint Discriminating Sensor Replacement (See: Restraints and Safety Systems/Air Bag Systems/Impact

Sensor/Service and Repair/Front End Inflatable Restraint Discriminating Sensor Replacement)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for SDM replacement, setup, and programming

B0086

DTC B0083-B0088

Diagnostic Instructions

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