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Home >> Pontiac >> 2009 >> Vibe Base, 2.4 0, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 70 (Automatic Transmission - 4T80-E - DTC P0218 To DTC P2534) >> DTC P0973, P0974, P0976, P0977, P2763, or P2764 >> Component Testing

Component 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.

Shift Solenoid Valves

  1. Ignition OFF, disconnect the transmission harness connector.
  2. Test for 19-24 ohms of resistance at 20°C (68°F) or 24-31 ohms of resistance at 88°C (188°F) between the ignition voltage terminal and the control terminal of the affected shift solenoid valve.
    • Terminals E and A for shift solenoid valve 1-2.
    • Terminals E and B for shift solenoid valve 2-3.
    • If not within the specified range, test the internal transmission wiring harness for an open or high resistance. If the circuits test normal, replace the affected shift solenoid valve.
  3. Test for infinite resistance between each terminal and ground.
    • If not the specified value, test the internal transmission wiring harness for a short to ground. If the circuits test normal, replace the affected shift solenoid valve.

TCC Solenoid

  1. Ignition OFF, disconnect the transmission harness connector.
  2. Test for 10-12 ohms of resistance at 20°C (68°F) or 13-15 ohms of resistance at 88°C (188°F) between the ignition voltage terminal U and the control terminal T of the TCC solenoid.
    • If not within the specified range, test the internal transmission wiring harness for an open or high resistance. If the circuits test normal, replace the TCC solenoid.
  3. Test for infinite resistance between each terminal and ground.
    • If not the specified value, test the internal transmission wiring harness for a short to ground. If the circuits test normal, replace the TCC solenoid valve.
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