This section shows how to troubleshoot the transmission solenoids/internal harness connections via the TCU main connector C12. Set your multi-meter to read resistance and probe between the indicated terminals. Caution: Be careful not to damage the terminals in the connector with the multi-meter probes.
A short, open or resistance reading outside of the specification indicates a problem that needs to be investigated further. Note: The letters and numbers used to identify the terminals are molded to the connector body.
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Main TCU Connector
Shift Solenoid A 20-30 Ohms at 70 degs F. Check across pins 1 and 59. Shift Solenoid B 20-30 Ohms at 70 degs F. Check across pins 1 and 53. Pressure Control Solenoid 3.5-8.0 Ohms at 70 degs F. Check across pins 37 and 60. TCC Solenoid (1993-1994 On/Off) Note Solenoid is polarity specific. Put positive test lead on pin 1. 20-30 Ohms at 70 degs F. Check across pins 1 and 36. TCC Solenoid (1995 Later PWM) 10-15 Ohms at 70 degs F. Check across pins 1 and 36. |
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Main TCU Connector
Shift Solenoid A 20-30 Ohms at 70 degs F. Check across pins 1 and 59. Shift Solenoid B 20-30 Ohms at 70 degs F. Check across pins 1 and 53. Pressure Control Solenoid 3.5-8.0 Ohms at 70 degs F. Check across pins 37 and 60. TCC Solenoid (1995 Later PWM) 10-15 Ohms at 70 degs F. Check across pins 37 and 60.
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Main TCU Connector
Shift Solenoid A 20-30 Ohms at 70 degs F. Check across pins 1 and 59. Shift Solenoid B 20-30 Ohms at 70 degs F. Check across pins 1 and 53. Pressure Control Solenoid 2.5-5.7 Ohms at 70 degs F. Check across pins 37 and 60. TCC Solenoid (1993-1995) - 10-30 Ohms at 70 degs F. Check across pins 1 and 36. TCC Solenoid (1996 2004) 10-16 Ohms at 70 degs F. Check across pins 1 and 36.
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Main TCU Connector
Shift Solenoid A 20-30 Ohms at 70 degs F. Check across pins 1 and 59. Shift Solenoid B 20-30 Ohms at 70 degs F. Check across pins 1 and 53. Pressure Control Solenoid 4.3-6.5 Ohms at 70 degs F. Check across pins 37 and 60. TCC Solenoid (1993-1995) - 20-30 Ohms at 70 degs F. Check across pins 1 and 36.
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