Restraints - Air Bag Lamp ON/DTCs' 023/024/063/064/065
TECHNICALBulletin No.: 09-09-41-002
Date: April 01, 2009
Subject:
SIR/Airbag Light Illuminated, Passenger Presence System (PPS) DTCs 023, 024, 063, 064, 065 Set (Inspect PPS System Wiring and/or Connectors)
Models:
2006-2008 Chevrolet Cobalt
2008-2009 Chevrolet Cobalt SS
2006-2008 Pontiac G5
Condition
Some customers may comment that the SIR light is illuminated. Upon investigation, the technician may find one of the following DTCs set:
- 023
- 024
- 063
- 064
- 065
Correction
Note
All Passenger Presence System (PPS) modules that are replaced should include documentation of ALL PPS DTCs and repair description in the R.O. in the warranty claim system. PPS DTCs are read by counting the number of On/Off indicators flashes on the passenger airbag display located above the radio.
Important
Technicians are to use the Passenger Presence System Flash Code procedure in SI to correctly diagnose the problem. If the PPS DTC is in history (PPS indicator will flash codes only once), make note of the DTC on the R.O., clear codes and return the vehicle to the customer. If the PPS DTC is an active fault (PPS indicators will flash same codes twice), make note of the DTC on the R.O. and follow the troubleshooting codes below.
PPS DTC 023 - Seat Belt Tension Sensor Circuit Out of Range
1. Remove the B Pillar trim near the seat belt anchor. Refer to Center Pillar Lower Garnish Molding Replacement in SI.
2. Inspect the connector on the Belt Tension Sensor (BTS) (located between the floor pan and the carpet under the front passenger seat) for looseness or disconnection. Reconnect the connector.
3. Check for cut, chafed or shorted BTS pigtails. Repair as necessary.
4. With a DMM, perform a continuity check of the three wires leading from the BTS connector (vehicle harness side) to the ECU connector. Repair as necessary.
5. With a DMM, measure for shorts between on all three wires leading from the BTS connector (vehicle harness side) to the ECU connector. Repair as necessary.
6. If repairs were made in Steps 3-6, reconnect the BTS , install the seat in the vehicle and reconnect the seat harness to the vehicle harness
7. With the ignition on and the engine OFF, clear the SDM and PPS codes.
8. Cycle the ignition and verify that the codes are cleared.
9. If active codes return, replace the seat belt retractor assembly. Refer to Seat Belt Retractor Pretensioner Replacement in SI.
PPS DTC 024 - PPS Ignition 1 Voltage Performance
1. If the DTC is current, check the vehicle voltage. If the voltage is less than 8 volts, correct the vehicle voltage.
2. Check the voltage level at the PPS ECU. If the voltage is less than 8 volts, check the wire for an open, shorts and high resistance. Perform wire repair as necessary.
3. With the ignition on and the engine OFF, clear the SDM and PPS codes.
4. Cycle the ignition and verify that the codes are cleared.
5. If active codes return, replace the PPS (3). Refer to Inflatable Restraint Passenger Presence System Replacement in SI.
PPS DTC 063 - PPS Out of Calibration
Refer to the Passenger Presence System Rezeroing in SI.
PPS DTC 064 - Communication/ID Performance
1. Inspect the connector on the sensor mat (1) for looseness or disconnection. If the connector was loose or disconnected, reconnect the connector and check for PPS codes using Steps 7 and 8 below.
2. If PPS codes still exist, remove the seat. (2). Refer to Front Seat Replacement - Bucket in SI
3. Check if the seat harness is cut, chafed or shorted. Repair as necessary.
4. With a DMM, perform a continuity check of the three wires leading from the sensor mat connector to the ECU connector. Repair as necessary.
5. With a DMM, measure for shorts between all three wires leading from the sensor mat connector to the ECU connector. Repair as necessary.
6. If repairs were made in Steps 3-5, install the seat in the vehicle and reconnect the seat harness to the vehicle harness.
7. With the ignition on and the engine OFF, clear the SDM and PPS codes.
8. Cycle the ignition and verify that the codes are cleared.
9. If active codes return, replace the PPS (3), Refer to Inflatable Restraint Passenger Presence System Replacement in SI.
PPS DTC 065 - Sensor Circuit Out of Range
1. Remove the seat (2). Refer to Front Seat Replacement - Bucket in SI
2. Check if seat harness is cut, chafed or shorted. Repair as necessary.
3. With a DMM, measure for shorts between all three wires leading from the sensor mat connector to the ECU connector. Repair as necessary.
4. If repairs were made in Steps 2-3, go to Step 10.
5. Check for a cut, chafed or shorted BTS pigtail. Repair as necessary.
6. With a DMM, measure for shorts on the three wires leading from the BTS connector (vehicle harness side) to the ECU. Repair as necessary.
7. If repairs were made in Steps step 5-6, reconnect the BTS.
8. Install the seat (2) in the vehicle and reconnect the seat harness to the vehicle harness. Refer to Front Seat Replacement in SI.
9. With the ignition on and the engine OFF, clear the SDM and PPS codes.
10. Cycle the ignition and verify that the codes are cleared.
11. If active codes return, replace the PPS (3), Refer to Inflatable Restraint Passenger Presence System Replacement in SI.
Parts Information
Warranty Information
For repairs performed under warranty, use the applicable published labor code from the Labor Time Guide.
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