DTC 75

System Voltage Circuit:

Circuit Description:
Code 75 will set when the ignition is "ON" and PCM terminal "D1" or TCM terminal "A12" voltage is less than 8.6 volts for about 4 seconds.

During the time the failure is present, the force motor is turned "OFF," maintaining 2nd gear only, and inhibiting 4th gear and TCC operation.

System Voltage Diagnostic Chart:

Test Description:
Number(s) below refer to circled number(s) on the diagnostic chart.

1. Normal battery voltage is between 10-17.0 volts.

2. Checks to see if the low voltage reading is due to the generator, CKT 440 or PCM/TCM, with engine running check voltage at the battery. If the voltage is below 8.6 volts, the PCM/TCM is OK.

Note on Intermittents:
If Code sets when an accessory is operated, check for poor connections or excessive current draw. See "Electrical Wiring and Trouble Shooting". Also, check for poor connections at starter solenoid or fusible link.

Minimum voltage allowed for Code 75 to set is on a graduated scale and will change with temperature. Minimum voltage at -40°C (-40°F) is 6.7 volts, minimum at 150°C (-304°F) is 10.5 volts, 8.6 volts is the minimum voltage at 90°C (194°F).