DR-1F A/C Push Button Switch Input Circuit

*** UPDATED BY TSB #18-62-86

1. Place ignition switch in the Off position.
2. Connect a voltmeter between logic module black electrical connector terminal No. 11 and ground.
3. Start engine, then wait approximately 10 seconds.
4. Move blower switch to an on position and then press the A/C button, wait for the A/C clutch to engage.
5. If voltmeter reading is between 7 and 9 volts, repair wire of cavity No. 11 for open circuit to A/C switch circuit.
6. If voltmeter reading is not between 7 and 9 volts, replace logic module.
CAUTION: Before replacing the logic module check the terminal in cavity No. 11 of the blue connector to make sure it is not crushed causing a poor connection.