A/C - Compressor Clutch Slips or Has Failed

85chrysler15

Models


All 1985 Front Wheel Drive Domestic Passenger Cars Except Omni, Horizon, Charger & Turismo


Subject


A/C Blower Motor Resistor Block Diode Testing


Index


AIR CONDITIONING


Date

February 4, 1985


No..


24-02-85

P-338-C
SYMPTOM/CONDITION


If the air conditioning compressor clutch slips on disengagement or has failed for no apparent reason, or if the air conditioning blower motor operates at all speeds except low, it will be necessary to check the diode at the blower motor resistor block for proper performance. The function of the diode is to allow current flow in one direction and block the current in the other direction.


Diode Performance Test


The diode is located on the air conditioning blower motor resistor block between cut off terminal 1 and terminal 2.


1. Using an OHM meter or continuity light, test the diode by placing the positive lead of the tester on cut off terminal 1 and the negative lead on terminal 2.


2. If there is no continuity (diode open), there would be no low blower speed and the resistor block must be replaced.


3. If there is continuity (diode closed), reverse the tester leads.


4. If there is continuity (diode closed in reverse direction), there would be clutch drag and the resistor block must be replaced.
A good diode will show continuity from the positive connection at terminal 1 to the negative connection at terminal 2. There should be no continuity when the tester leads are reversed.


POLICY: Reimbursable within the provisions of the warranty


TIME ALLOWANCE: Refer to Labor Operation Time Schedule for operation and time.