Control Module Power Supply

BATTERY VOLTAGE (+30 CIRCUIT)
- The transmission control module is continuously supplied with battery voltage (+30 circuit) on pin 18. The control module uses this voltage as a back-up for the memory. Current consumption on back-up is less than 1 mA.

BATTERY VOLTAGE (+15 CIRCUIT)
- When the ignition switch is in the Drive position, the transmission control module is supplied with current (+15 circuit) on pin 17. This current is necessary in order to activate the control module.