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Home >> Pontiac >> 2009 >> Vibe Base, 2.4 0, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 44 (Seat Heating System & Seat Cooling System) >> Diagnostic Information and Procedures >> DTC B1935 or B2180 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2009 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

B1935 0D or B1935 0E

  1. Ignition OFF, disconnect the X1 harness connector at the RHSM.
    2. IMPORTANT: 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 4.3-10.4 ohms between the control circuit terminal 3 and control circuit terminal 1.
    • If greater than the specified range, test the control circuits for an open/high resistance. If the circuits test normal, replace the seat back heating element.
    • If less than the specified range, test for a short between the control circuits. If the circuits test normal, replace the seat back heating element.
  3. If all circuits test normal, replace the RHSM.

B2180 0D or B2180 0E

  1. Ignition OFF, disconnect the X1 harness connector at the RHSM.
    2. IMPORTANT: 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 4.3-10.4 ohms between control circuit terminal 6 and control circuit terminal 4.
    • If greater than the specified range, test the control circuits for an open/high resistance. If the circuits test normal, replace the seat back heating element.
    • If less than the specified range, test for a short between the control circuits. If the circuits test normal, replace the seat back heating element.
  3. If all circuits test normal, replace the RHSM.
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