Inspection Procedure

WARNING: This page is about a different car, the 2008 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

READ VALUE OF TECHSTREAM

Connect Techstream to the DLC3.
Turn the ignition switch ON and turn Techstream ON.

Select the items below in the Data List, and read the value displayed on Techstream.

Air conditioning amplifier

DATA LIST - AIR CONDITIONING AMPLIFIER

Item	Measurement Item / Display (Range)	Normal Condition	Diagnostic Note
Regulator Control Current	Regulator control current / Min.: 0 A Max.: 0.997 A	Value changes between 0 A and 0.997 A in accordance with A/C compressor operation	-

OK:

The display is as specified in the normal condition column.

Result

RESULT REFERENCE

Result	Proceed to
NG	A
OK (Checking from the PROBLEM SYMPTOMS TABLE)	B
OK (Checking from the DTC)	C

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

C: REPLACE AIR CONDITIONING AMPLIFIER

A: Go to next step

INSPECT A/C COMPRESSOR

Disconnect the A/C compressor clutch connector.

Fig 1: Identifying A/C Compressor Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the resistance of the connector.

Standard resistance

RESISTANCE SPECIFICATION

Tester Connection	Condition	Specified Condition
1 (SOL-) - 2 (SOL+)	25°C (77°F)	10.1 to 11.1 Ω

NG: REPLACE A/C COMPRESSOR

OK: Go to next step

CHECK WIRE HARNESS (A/C COMPRESSOR - AIR CONDITIONING AMPLIFIER)

Disconnect the B23 A/C compressor connector.
Disconnect the E37 amplifier connector.

Fig 2: Identifying B23 And E37 Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the resistance of the wire harness side connectors.

Standard resistance

RESISTANCE SPECIFICATION

Tester Connection	Specified Condition
B23-2 (SOL+) - E37-2 (SOL+)	Below 1 Ω
B23-2 (SOL+) - Body Ground	1 MΩ or higher

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: Go to next step

CHECK WIRE HARNESS (A/C COMPRESSOR - BODY GROUND)

Disconnect the B23 A/C compressor connector.

Fig 3: Identifying B23 Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the resistance of the wire harness side connector.

Standard resistance

RESISTANCE SPECIFICATION

Tester Connection	Specified Condition
B23-1 (SOL-) - Body ground	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: REPLACE AIR CONDITIONING AMPLIFIER