LEMON Manuals: Even more car manuals for everyone
Home >> Pontiac >> 2008 >> Torrent GXP, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 128 (Seat Heating System & Seat Cooling System) >> Diagnostic Information and Procedures >> DTC B2425 or B2430 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2009 Pontiac Torrent and 2009 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.

B2425 0A, B2425 0B, B2425 0C, B2425 0D, B2425 0E, B2425 04, or B2425 1F

  1. Ignition OFF, disconnect the harness connector at the seat back heating element.
    2. NOTE: When measuring resistance, all of the resistance values below are based on the seat being at room temperature of 20°C (68°F).
  2. Test for 0.5 - 2.5 Ω between terminal A and terminal B.
    • If not within the specified range, replace the seat back heating element.
  3. Connect the harness connector at the seat back heating element.
  4. Disconnect the X1 harness connector at the HSM.
  5. Test for 1.5 - 5 Ω between control circuit terminal 3 and control circuit terminal 5.
    • If less than the specified range, test for a short between the control circuits. If the circuits test normal, replace the seat cushion heating element.
    • If greater than the specified range, test the control circuits for an open/high resistance. If the circuits test normal, replace the seat cushion heating element.
  6. Disconnect the X2, X4 harness connectors at the HSM.
  7. Test for 1.9 k-300 kΩ between the signal circuit terminal 9 X4 and the low reference circuit terminal 6 X2.
    • If less than the specified range, test for a short between the signal and low reference circuits. If the circuits test normal, replace the seat temperature sensor.
    • If greater than the specified range, test the signal circuit and the low reference circuit for a short to voltage or an open/high resistance. If the circuits test normal, replace the seat temperature sensor.
  8. Ignition OFF, connect the X1, X2, X4 harness connectors at the HSM.
  9. Disconnect the harness connector at the seat cushion heating element/temperature sensor.
  10. Ignition ON, test for 4.8 - 5.2 V between the signal circuit terminal A and ground.
    • If less than the specified range, test the signal circuit for a short to ground. If the circuit tests normal, replace the HSM.
    • If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the HSM.
  11. If all circuits test normal, replace the HSM.

B2430 0A, B2430 0B, B2430 0C, B2430 0D, B2430 0E, B2430 04, or B2430 1F

  1. Ignition OFF, disconnect the harness connector at the seat back heating element.
    2. NOTE: When measuring resistance, all of the resistance values below are based on the seat being at room temperature of 20°C (68°F).
  2. Test for 0.5 - 2.5 Ω between terminal A and terminal B.
    • If not within the specified range, replace the seat back heating element.
  3. Connect the harness connector at the seat back heating element.
  4. Disconnect the X1 harness connector at the HSM.
  5. Test for less than 1.5 - 5 Ω between control circuit terminal 6 and control circuit terminal 2.
    • If less than the specified range, test for a short between the control circuits. If the circuits test normal, replace the seat cushion heating element.
    • If greater than the specified range, test the control circuits for an open/high resistance. If the circuits test normal, replace the seat cushion heating element.
  6. Disconnect the X2, X4 harness connectors at the HSM.
  7. Test for 1.9 k - 300 kΩ between the signal circuit terminal 20 X4 and the low reference circuit terminal 8 X2.
    • If less than the specified range, test for a short between the signal and low reference circuits. If the circuits test normal, replace the seat temperature sensor.
    • If greater than the specified range, test the signal circuit and the low reference circuit for a short to voltage or an open/high resistance. If the circuits test normal, replace the seat temperature sensor.
  8. Ignition OFF, connect the X1, X2, X4 harness connectors at the HSM.
  9. Disconnect the harness connector at the seat cushion heating element/temperature sensor.
  10. Ignition ON, test for 4.8 - 5.2 V between the signal circuit terminal A and ground.
    • If less than the specified range, test the signal circuit for a short to ground. If the circuit tests normal, replace the HSM.
    • If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the HSM.
  11. If all circuits test normal, replace the HSM.
scientia non olet · About LEMON Manuals