Toyota RAV4 manuals

Toyota Sienna Service Manual: Air Conditioning Compressor Magnetic Clutch Circuit

DESCRIPTION

When the A/C amplifier is turned on, a magnetic clutch ON signal is sent from the MGC terminal of the A/ C amplifier. Then, the MG CLT relay turns on to operate the magnetic clutch.

WIRING DIAGRAM

Air Conditioning Compressor Magnetic Clutch Circuit

INSPECTION PROCEDURE

1 CHECK CAN COMMUNICATION SYSTEM

(a) Use the intelligent tester to check if the CAN communication system is functioning normally.

Result

2 CHECK MULTIPLEX COMMUNICATION SYSTEM

(a) Use the intelligent tester to check if the multiplex communication system is functioning normally.

Result

3 PERFORM ACTIVE TEST BY INTELLIGENT TESTER

(a) Connect the intelligent tester to the DLC3.

(b) Turn the ignition switch to the ON position and turn the intelligent tester main switch on.

(c) Select the item below in the ACTIVE TEST and then check that the relay operates.

ACTIVE TEST / AIR CONDITIONER:

OK: Magnetic clutch relay operates.

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

4 INSPECT FUSE (HTR)

(a) Remove the HTR fuse from the driver side junction block.

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

Standard resistance

(c) Reconnect the HTR fuse to the driver side junction block.

5 INSPECT RELAY (MG CLT)

 INSPECT RELAY (MG CLT)

(a) Remove the MG CLT relay from the No. 3 relay block.

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

Standard resistance

(c) Install the MG CLT relay to the No. 3 relay block.

6 CHECK HARNESS AND CONNECTOR (A/C AMPLIFIER - BATTERY)

CHECK HARNESS AND CONNECTOR (A/C AMPLIFIER - BATTERY)

(a) Disconnect the connector from the A/C amplifier.

(b) Measure the voltage according to the value(s) in the table below.

Standard voltage

7 INSPECT A/C AMPLIFIER

INSPECT A/C AMPLIFIER

(a) Reconnect the connector to the A/C amplifier.

(b) Measure the voltage according to the value(s) in the table below.

Standard voltage

8 INSPECT COMPRESSOR AND MAGNETIC CLUTCH

 INSPECT COMPRESSOR AND MAGNETIC CLUTCH

(a) Disconnect the connector from the compressor and magnetic clutch.

 INSPECT COMPRESSOR AND MAGNETIC CLUTCH

(b) Disconnect the connector from the magnetic clutch.

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

Standard resistance

9 INSPECT MAGNETIC CLUTCH

INSPECT MAGNETIC CLUTCH

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

Standard resistance

(b) 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.

10 CHECK HARNESS AND CONNECTOR (NO. 3 RELAY BLOCK - BATTERY)

CHECK HARNESS AND CONNECTOR (NO. 3 RELAY BLOCK - BATTERY)

(a) Remove the MG CLT relay from the No. 3 relay block.

(b) Turn the ignition switch to the ON position.

(c) Measure the voltage according to the value(s) in the table below.

Standard voltage

REPAIR OR REPLACE HARNESS OR CONNECTOR

Blower Motor Circuit
DESCRIPTION The blower motor is operated by signals from the A/C amplifier. Blower motor speed signals are transmitted by changes in the Duty Ratio. Duty Ratio The duty ratio is the ratio of ...

Rear Air Conditioning Control Panel Circuit
DESCRIPTION This is the rear A/C system control signal circuit as well as the power supply circuit of the rear A/C control assembly. Pulse signals regarding rear A/C control panel switch operat ...

Other materials:

Positioning a floor jack
When using a floor jack, follow the instructions in the manual provided with the jack and perform the operation safely. When raising your vehicle with a floor jack, position the jack correctly. Improper placement may damage your vehicle or cause injury. Front Rear 2WD ...

Installation
1. INSTALL SLIDE DOOR ROLLER ASSEMBLY UPPER Apply MP grease to the rotating area of the roller. Install the roller with the 2 bolts. Torque: 13 N*m (130 kgf*cm, 10 ft.*lbf) 2. INSTALL SLIDE DOOR HINGE ASSEMBLY CENTER LH Apply MP grease to the rotating areas of the hinge. Ins ...

Check that initialization has been completed
(a) Confirm that the data of tire pressure of all tires are displayed on the intelligent tester screen. Tester Display Measurement Item/Range Normal Condition Diagnostic Note TIREPRESS1 ID1 tire inflation pressure (Absolute pressure) / min.: 100 kPa (1 kgf/cm2, 14 ...

В© 2011-2019 Copyright www.tsienna.net