Control Assembly: Testing and Inspection
AIR CONDITIONING: AIR CONDITIONING PANEL: INSPECTION
1. INSPECT AIR CONDITIONING CONTROL ASSEMBLY
(a) Check the blower switch resistance.
(1) Using an ohmmeter, measure the resistance and check the results in accordance with the values in the table below.
Standard Resistance:
Text in Illustration
If the result is not as specified, replace the air conditioning control assembly.
(b) Check the temperature selector switch voltage.
(1) Apply battery voltage (13.5 V) across terminals 14 (IG+) and 1 (GND).
(2) Connect the positive (+) tester probe of a voltmeter to terminal 2 (AMSW) and the negative (-) tester probe to terminal 1 (GND), then check the voltage.
Standard Voltage:
Text in Illustration
If the result is not as specified, replace the air conditioning control assembly.
(c) Check the mode selector switch voltage.
(1) Apply battery voltage (13.5 V) across terminals 14 (IG+) and 1 (GND).
(2) Connect the positive (+) tester probe of a voltmeter to terminal 3 (MSET) and the negative (-) tester probe to terminal 1 (GND), then check the voltage.
Standard Voltage:
Text in Illustration
If the result is not as specified, replace the air conditioning control assembly.
(d) Inspect the illumination operation.
(1) Connect the positive (+) lead from the battery to terminal 6 (ILL+) and negative (-) lead to terminal 9 (ILL-), then check that the illuminations light up.
OK:
Illuminations light up
Text in Illustration
If the result is not as specified, replace the air conditioning control assembly.
(e) Inspect A/C indicator operation.
(1) Connect the positive (+) lead from the battery to terminal 14 (IG+) and negative (-) lead to terminal 10 (ACID) and 1 (GND).
(2) Push the A/C button in and then check that the indicator lights up.
OK:
Indicator lights up
Text in Illustration
If the result is not as specified, replace the air conditioning control assembly.
(3) Under the above condition, connect the positive (+) lead from the battery to terminal 6 (ILL+) and then check that the indicator dims.
OK:
Indicator dims
Text in Illustration
If the result is not as specified, replace the air conditioning control assembly.
(f) Inspect the REC indicator operation.
(1) Connect the positive (+) lead from the battery to terminal 14 (IG+) and negative (-) lead to terminal 11 (REC) and 1 (GND).
(2) Push the REC button in and then check that the indicator lights up.
OK:
Indicator lights up
Text in Illustration
If the result is not as specified, replace the air conditioning control assembly.
(3) Under the above condition, connect the positive (+) lead from the battery to terminal 6 (ILL+) and then check that the indicator dims.
OK:
Indicator dims
Text in Illustration
If the result is not as specified, replace the air conditioning control assembly.