Download section 1b air conditioning

AIR CONDITIONING 1B-9B
V-5 SYSTEM A I R CONDITIONING DIAGNOSIS
INSUFFICIENT COOLING " CHART E"
+
WITH KEY ON AND ENGINE NOT RUNNING, CHECK FOR 12 VOLTS AT THE A/C CONTROL
RELAY. SEE ILLUSTRATIONS FOR LOCATION.
12 VOLTS
OPEN CIRCUIT
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CHECK FOR COMPRESSOR CLUTCH
COIL OPERATION BY APPLYING
12 VOLTS AND GROUND DIRECTLY
FROM THE BATTERY TO THE COIL
TERMINALS AT THE CLUTCH.
CHECK THE ELECTRICAL CONNECTORS OF THE
TWO SWITCHES IN THE REAR HEAD OF THE
COMPRESSOR ( ILLUSTRATIONS) FOR PROPER
INSTALLATION AND FUNCTION.
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CLUTCH DOES NOT ENGAGE,
INOPERATIVE COIL.
*
CONNECTORS OK
CONNECTOR
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REPLACE COMPRESSOR
CLUTCH COIL ASSEMBLY.
EVACUATE AND CHARGE.
CHECK FOR 12 VOLTS AT
THE FEEDWIRE
TO THE A/C LOW PRESSURE
SWITCH SEE ILLUSTRATIONS
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OPEN CIRCUIT
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REPLACE AS
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12 VOLTS
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CHECK ELECTRICAL SYSTEM AND
REPAIR AS REQUIRED. SEE SECTION
8A-64
OF SERVICE MANUAL.
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CHECK FOR ELECTRICAL CONTINUITY ACROSS
THE SWITCH TERMINALS OF BOTH SWITCHES IN
THE REAR HEAD OF THE COMPRESSOR USING AN
OHM METER. BOTH SWITCHES SHOULD BE
CLOSED. IF EITHER SWITCH IS OPEN,
DISCHARGE THE SYSTEM AND REPLACE
THE INOPERATIVE SWITCH.
BOTH SWITCHES SHOW CONTINUITY.
RECHECK CONNECTORS.
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H20010-1B
Figure 1B-6D V-5 A/C System Insufficient Cooling Diagnostic Procedure (4 of 4)
*NEW 10/86