Inspection Procedure

1. Connect Techstream to DLC3.
2. Turn the ignition switch on (IG) and turn Techstream on.
3. Select the item below in the Active Test and then check that the relay operates.

   Data List / Air Conditioner: 

   DATA LIST - AIR CONDITIONER
   
   

   Item	Measurement Item / Display (Range)	Diagnostic Note
   Magnetic Clutch Relay	Magnetic clutch relay / OFF.ON	-

NG: Go to step 2 

OK : PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

1. Remove the A/C COMP fuse from the instrument panel J/B.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance 

   STANDARD RESISTANCE SPECIFICATIONS
   
   

   Tester Connection	Condition	Specified Condition
   A/C COMP fuse	Always	Below 1 Ω

NG: REPLACE FUSE (A/C COMP) 

Fig 1: Identifying A/C COMP Fuse

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to Next Step 

1. Remove the MG CLT relay (magnetic clutch relay) from engine room R/B and J/B.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance 

   STANDARD RESISTANCE SPECIFICATIONS
   
   

   Tester Connection	Condition	Specified Condition
   3 - 5	Always	10 kΩ or higher
   3 - 5	When Battery voltage is applied to terminals 1 and 2	Below 1 Ω (When Battery voltage is applied to terminals 1 and 2)

   Fig 2: Inspecting Magnetic Clutch Relay

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   NOTE: While using the battery during inspection, do not bring the positive and negative tester probes too close to each other as a short circuit may occur.

NG: REPLACE MAGNETIC CLUTCH RELAY 

OK: Go to Next Step 

1. Disconnect the connector from the w/ magnet clutch compressor assembly.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance 

   STANDARD RESISTANCE SPECIFICATIONS
   
   

   Tester Connection	Condition	Specified Condition
   B8-3 (MG+) - Body Ground	Always	Below 1 Ω

NG: REPLACE W/MAGNETIC CLUTCH COMPRESSOR ASSEMBLY 

Fig 3: Identifying B8 W/Magnetic Clutch Compressor Assembly Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to Next Step 

1. Remove the A/C amplifier and disconnect the connector.
2. Turn the ignition switch on (IG).
3. Measure the voltage according to the value(s) in the table below.

   Standard voltage 

   STANDARD VOLTAGE SPECIFICATIONS
   
   

   Tester Connection	Condition	Specified Condition
   D37-3 (MGC)- Body ground	Magnet clutch: ON	Below 1 V
   D37-3 (MGC)- Body ground	Magnet clutch: OFF	10 to 14 V

   Fig 4: Identifying D37 Air Conditioning Amplifier Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Result 

   RESULT REFERENCE
   
   

   Result	Proceed to
   NG	A
   OK (w/o Smart key system)	B
   OK (w/Smart key system)	C

B:  Go to STARTING SYSTEM

C:  Go to PUSH BUTTON START SYSTEM.

A : REPLACE AIR CONDITIONING AMPLIFIER