COMPRESSOR AND MAGNETIC CLUTCH (for 4WD): Inspection

1. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   E8-1 (MG+) - A-1	Always	Below 1 Ω
   E8-1 (MG+) - Body ground	Always	10 kΩ or higher

If the resistance is not as specified, replace the A/C compressor.

Fig 1: Identifying Connector Terminals (E8)

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1. Measure the resistance of the connector.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   A-1 - Body ground	Always	3.4 to 3.8 Ω

   If the resistance is not as specified, replace the magnetic clutch.

2. When connector terminal A1 is connected to the positive (+) battery terminal, check that the following occurs: 1) the magnetic clutch's operating sound can be heard, and 2) the magnetic clutch's hub and rotor lock.

Fig 2: Identifying Connector Terminals (A)

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1. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   E8-2 (SSR+) - E8-5 (SSR-)	160 to 320 Ω

Fig 3: Identifying Connector Terminals (D8)

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If the resistance is not as specified, replace the A/C compressor.

1. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   E8-3 (SOL+) - E8-6 (SOL-)	20°C (68°F)	10 to 11 Ω

If the resistance is not as specified, replace the A/C compressor.

Fig 4: Identifying Connector Terminals (E8)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002