RM35X0E _58 Vehicle Interior _079316 HEATING / AIR CONDITIONING _0386651 AIR CONDITIONING SYSTEM(for Automatic Air Conditioning System) J

HEATING / AIR CONDITIONING AIR CONDITIONING SYSTEM(for Automatic Air Conditioning System) Air Conditioning Compressor Magnetic Clutch Circuit

DESCRIPTION

The air conditioning amplifier assembly outputs the magnet clutch on request signal to the ECM. The ECM sends a magnet clutch on permission signal to the air conditioning amplifier assembly. The air conditioning amplifier assembly turns the magnet clutch on based on this signal.

Malfunction Status	Factor
Refrigerant pressure does not decrease when A/C switch is off.	Compressor with magnet clutch assembly circuit malfunction

WIRING DIAGRAM

6.01,1.427 6.469,1.625 0.458,0.198 10 false MGC 4.51,0.906 4.969,1.104 0.458,0.198 10 false ECM 5.51,4.375 5.969,4.573 0.458,0.198 10 false N43 5.719,1.427 6.177,1.625 0.458,0.198 10 false 19 5.521,4.531 7.083,4.969 1.563,0.438 10 false Air Conditioning Amplifier Assembly 3.677,2.24 4.625,2.479 0.948,0.24 10 false FR MGC 0.177,1.521 1.469,1.771 1.292,0.25 10 false from IG1 NO.3 Relay 0.813,4.552 3.708,4.771 2.896,0.219 10 false Compressor with Magnet Clutch Assembly 0.802,4.406 2.094,4.563 1.292,0.156 10 false E15 0.875,5.365 3.25,5.646 2.375,0.281 10 false : CAN Communication Line 6.052,3.406 6.51,3.604 0.458,0.198 10 false LOCK 3.25,2.958 3.708,3.156 0.458,0.198 10 false MG+ 3.781,2.958 4.24,3.156 0.458,0.198 10 false 3 3.771,3.396 4.229,3.594 0.458,0.198 10 false 1 5.75,3.396 6.208,3.594 0.458,0.198 10 false 12 5.76,3.844 6.219,4.042 0.458,0.198 10 false 14 6.052,3.833 6.51,4.031 0.458,0.198 10 false SG-5 3.792,3.833 4.25,4.031 0.458,0.198 10 false 2 3.198,3.396 3.656,3.594 0.458,0.198 10 false SSR+ 3.208,3.844 3.667,4.042 0.458,0.198 10 false SSR- 0.896,3.5 1.833,3.927 0.938,0.427 10 false Magnet Clutch Assembly 3.26,1.427 3.719,1.625 0.458,0.198 10 false 2 3.281,1.833 3.74,2.031 0.458,0.198 10 false 3 4.469,1.427 4.927,1.625 0.458,0.198 10 false 1 4.49,1.823 4.948,2.021 0.458,0.198 10 false 5

CAUTION / NOTICE / HINT

NOTICE:: ·

Inspect the relays for circuits related to this system before performing the following procedure.

·

If DTC B1422 is output at the same time, troubleshoot for DTC B1422 first.

PROCEDURE

1.CHECK CAN COMMUNICATION SYSTEM

Using the GTS, check if the CAN communication system is functioning normally.

Click herePower Source / Network>NETWORKING>CAN COMMUNICATION SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING201902,201906,_57,_078518,_0381088,RM100000001GYCO,201906,202310,_57,_078518,_0381088,RM100000001WPQJ,202310,999999,_57,_078518,_0381088,RM100000002G45P,

OK:: CAN communication system DTCs are not output.

Result:

Proceed to
OK
NG

2.INSPECT MAGNET-CLUTCH RELAY (FR MGC)

GO TO CAN COMMUNICATION SYSTEM

2.INSPECT MAGNET-CLUTCH RELAY (FR MGC)

Remove the magnet-clutch relay (FR MGC) from the No. 1 engine room relay block assembly.

Inspect the magnet-clutch relay (FR MGC).

Click hereVehicle Interior>HEATING / AIR CONDITIONING>RELAY>ON-VEHICLE INSPECTION201902,201906,_58,_079316,_0384901,RM100000001GIVT,201906,999999,_58,_079316,_0384901,RM100000001J16C,

Result:

Proceed to
OK
NG

3.INSPECT MAGNET CLUTCH ASSEMBLY

REPLACE MAGNET-CLUTCH RELAY (FR MGC)

3.INSPECT MAGNET CLUTCH ASSEMBLY

Remove the magnet clutch assembly.

for 7GR-FKS:Vehicle Interior>HEATING / AIR CONDITIONING>COMPRESSOR (for 7GR-FKS)>DISASSEMBLY201902,999999,_58,_079316,_0384886,RM100000001GIU2,

for 1GD-FTV:Vehicle Interior>HEATING / AIR CONDITIONING>COMPRESSOR (for 1GD-FTV)>DISASSEMBLY201902,999999,_58,_079316,_0384887,RM100000001GIU8,

Inspect the magnet clutch assembly.

for 7GR-FKS:Vehicle Interior>HEATING / AIR CONDITIONING>COMPRESSOR (for 7GR-FKS)>INSPECTION201902,999999,_58,_079316,_0384886,RM100000001GIU3,

for 1GD-FTV:Vehicle Interior>HEATING / AIR CONDITIONING>COMPRESSOR (for 1GD-FTV)>INSPECTION201902,999999,_58,_079316,_0384887,RM100000001GIU9,

Result:

Proceed to
OK
NG

4.CHECK HARNESS AND CONNECTOR (MAGNET-CLUTCH RELAY (FR MGC) - COMPRESSOR ASSEMBLY WITH MAGNET CLUTCH AND BATTERY)

REPLACE MAGNET CLUTCH ASSEMBLY

for 7GR-FKS:Vehicle Interior>HEATING / AIR CONDITIONING>COMPRESSOR (for 7GR-FKS)>DISASSEMBLY201902,999999,_58,_079316,_0384886,RM100000001GIU2,

for 1GD-FTV:Vehicle Interior>HEATING / AIR CONDITIONING>COMPRESSOR (for 1GD-FTV)>DISASSEMBLY201902,999999,_58,_079316,_0384887,RM100000001GIU8,

4.CHECK HARNESS AND CONNECTOR (MAGNET-CLUTCH RELAY (FR MGC) - COMPRESSOR ASSEMBLY WITH MAGNET CLUTCH AND BATTERY)

Remove the magnet-clutch relay (FR MGC) from the No. 1 engine room relay block assembly.

Disconnect the E15 compressor assembly with magnet clutch connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
Terminal 5 - E15-3 (MG+)	Always	Below 1 Ω
Terminal 5 or E15-3 (MG+) - Other terminals and body ground	Always	10 kΩ or higher

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

Standard Voltage:

Tester Connection	Switch Condition	Specified Condition
Terminal 2 - Body ground	Ignition switch off	Below 1 V
Terminal 2 - Body ground	Ignition switch ON	11 to 14 V
Terminal 3 - Body ground	Ignition switch off	Below 1 V
Terminal 3 - Body ground	Ignition switch ON	11 to 14 V

Result:

Proceed to
OK
NG

5.CHECK HARNESS AND CONNECTOR (MAGNET-CLUTCH RELAY (FR MGC) - AIR CONDITIONING AMPLIFIER ASSEMBLY)

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.CHECK HARNESS AND CONNECTOR (MAGNET-CLUTCH RELAY (FR MGC) - AIR CONDITIONING AMPLIFIER ASSEMBLY)

Remove the magnet-clutch relay (FR MGC) from the No. 1 engine room relay block assembly.

Disconnect the N43 air conditioning amplifier assembly connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
Terminal 1 - N43-19 (MGC)	Always	Below 1 Ω
Terminal 1 or N43-19 (MGC) - Other terminals and body ground	Always	10 kΩ or higher

Result:

Proceed to
OK
NG

6.CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY

0.063,0.375 0.563,0.625 0.5,0.25 1.438,1.219 1.198,1.938 1.198,1.938 0.865,1.938 true 0.531,1.854 0.99,2.052 0.458,0.198 10 false MGC 0.188,0.417 0.646,0.615 0.458,0.198 10 false N43 0.063,0.063 0.521,0.26 0.458,0.198 10 false *a

*a	Component with harness connected (Air Conditioning Amplifier Assembly)

Remove the air conditioning amplifier assembly with its connectors still connected.

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING AMPLIFIER>REMOVAL201902,201906,_58,_079316,_0384899,RM100000001GIVN,201906,202310,_58,_079316,_0384899,RM100000001ISKD,202310,999999,_58,_079316,_0384899,RM100000002EPUA,

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
N43-19 (MGC) - Body ground	· Engine idling · Blower switch: On (LO level) · A/C switch: On (magnet clutch on)	Below 1 V
N43-19 (MGC) - Body ground	· Engine idling · Blower switch: On (LO level) · A/C switch: Off or on (magnet clutch off)	11 to 14 V

Result:

Proceed to
OK
NG

REPLACE COMPRESSOR WITH MAGNET CLUTCH ASSEMBLY

for 7GR-FKS:Vehicle Interior>HEATING / AIR CONDITIONING>COMPRESSOR (for 7GR-FKS)>REMOVAL201902,999999,_58,_079316,_0384886,RM100000001GIU1,

for 1GD-FTV:Vehicle Interior>HEATING / AIR CONDITIONING>COMPRESSOR (for 1GD-FTV)>REMOVAL201902,999999,_58,_079316,_0384887,RM100000001GIU7,

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY