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Home >> Suzuki >> 2008 >> XL7 Base, AWD >> Repair and Diagnosis >> Body & Frame >> Seats >> Seat System >> Diagnostic Information and Procedures >> DTC B2425 or B2430 >> Circuit/System Testing
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Circuit/System Testing

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.
    NOTE: When measuring the resistance, all of the resistance values below are based on the seat being at room temperature of 20°C (68°F).
  2. Test for 1.64-5.54 ohms 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 heated seat module.
  5. Test for 1.64-5.54 ohms between control circuit terminal 3 and control circuit terminal 5.
    • 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.
    • 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.
  6. Disconnect the (X2, X4) harness connectors at the heated seat module.
  7. Test for 1.9K-300K ohms of resistance between the signal circuit terminal 9 (X4) and the low reference circuit terminal 6 (X2).
    • 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.
    • 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.
  8. Ignition OFF, connect the (X1, X2, X4) harness connectors at the heated seat module.
  9. Disconnect the harness connector at the seat cushion heating element/temperature sensor.
  10. Ignition ON, test for 4.8-5.2 volts between the temperature sensor signal circuit terminal C and ground.
    • If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the heated seat module.
    • If less than the specified range, test the signal circuit for a short to ground. If the circuit tests normal, replace the heated seat module.
  11. If all circuits test normal, replace the heated seat module.

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.
    NOTE: When measuring the resistance, all of the resistance values below are based on the seat being at room temperature of 20°C (68°F).
  2. Test for 1.64-5.76 ohms 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 heated seat module.
  5. Test for 1.64-5.76 ohms between control circuit terminal 6 and control circuit terminal 2.
    • 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 heated seat module.
  7. Test for 1.9K-300K ohms of resistance between the signal circuit terminal 20 (X4) and the low reference circuit terminal 8 (X2).
    • 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.
    • 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.
  8. Ignition OFF, connect the (X1, X2, X4) harness connectors at the heated seat module.
  9. Disconnect the harness connector at the seat cushion heating element/temperature sensor.
  10. Ignition ON, test for 4.8-5.2 volts between the temperature sensor signal circuit terminal C and ground.
    • If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the heated seat module.
    • If less than the specified range, test the signal circuit for a short to ground. If the circuit tests normal, replace the heated seat module.
  11. If all circuits test normal, replace the heated seat module.
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