Manual Transmission

Place transmission in Neutral and turn ignition on. Disconnect wire from B+ terminal of ballast resistor while holding solenoid vacuum valve. You should feel valve de-energize. Reconnect wire and you should feel solenoid energize. Place transmission in high gear, solenoid should not energize when wire is disconnected or connected. If system does not function correctly, check the following:

1. Remove electrical connector from solenoid vacuum valve. Place a jumper from the piggy back connector on ballast resistor to one of the solenoid vacuum valve terminals. Place a second jumper from the remaining vacuum valve terminal to ground. With ignition switch on, solenoid should energize. If not, replace solenoid vacuum valve.
2. Remove electrical connector from thermal switch. Using a short wire, jump electrical connector. Place transmission in Neutral and turn ignition on, solenoid vacuum valve should energize. If temperature is above 70°F and solenoid vacuum valve does not energize when thermal switch is connected, but does energize when plug is jumped, thermal switch is defective and should be replaced.
3. Place transmission in Neutral and turn ignition switch on. Remove electrical connector from transmission switch; using a piece of wire connect transmission switch connector to ground. If solenoid vacuum valve functions when this is done, replace transmission switch.
   NOTE: Make sure transmission switch is properly torqued to 180 INCH lbs. to insure proper grounding.