Toyota Tundra (2015 year). Manual — part 2265
Last Modified: 9-16-2014
6.6 J
Doc ID: RM000002VXQ01HX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Automatic Air Conditioning System): Air
Conditioning Compressor Magnetic Clutch Circuit; 2015 MY Tundra [08/2014 - ]
Air Conditioning Compressor Magnetic Clutch Circuit
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
1.
READ VALUE USING TECHSTREAM (A/C SIGNAL)
AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Automatic A...
OK
(a) Use the Data List to check if the air conditioning signal is functioning properly.
Engine and ECT
TESTER DISPLAY
MEASUREMENT ITEM / RANGE
NORMAL CONDITION
DIAGNOSTIC NOTE
A/C Signal
Air conditioning switch signal /
ON or OFF
ON: Air conditioning ON
OFF: Air conditioning OFF
-
OK:
The display is as specified in the normal condition.
NG
GO TO STEP 2
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN
IN PROBLEM SYMPTOMS TABLE
2.
INSPECT FUSE (A/C IG)
(a) Remove the A/C IG fuse from the main body ECU.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
A/C IG fuse
Always
Below 1 Ω
NG
REPLACE FUSE
3.
CHECK HARNESS AND CONNECTOR (ENGINE ROOM RELAY BLOCK, JUNCTION BLOCK
- BATTERY)
AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Automatic A...
OK
(a) Remove the magnetic clutch relay (MG CLT) from the engine
room relay block, junction block.
(b) Measure the voltage according to the value(s) in the table
below.
Standard voltage:
TESTER CONNECTION
SWITCH
CONDITION
SPECIFIED
CONDITION
Engine room relay block magnetic
clutch relay terminal 5 - Body
ground
Ignition switch
ON
11 to 14 V
Ignition switch
off
Below 1 V
Engine room relay block magnetic
clutch relay terminal 1 - Body
ground
Ignition switch
ON
11 to 14 V
Ignition switch
off
Below 1 V
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
4.
INSPECT MAGNETIC CLUTCH RELAY (MG CLT)
(a) Remove the magnetic clutch relay from the engine room
relay block, junction block.
(b) Measure the resistance according to the value(s) in the table
below.
Standard resistance:
TESTER
CONNECTION
CONDITION
SPECIFIED
CONDITION
3 - 5
When battery voltage is not
applied between terminals 1 and
2
10 kΩ or higher
When battery voltage is applied
to terminals 1 and 2
Below 1 Ω
AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Automatic A...
OK
OK
NG
REPLACE MAGNETIC CLUTCH RELAY
5.
CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - BATTERY)
(a) Disconnect the J19 air conditioning amplifier connector.
(b) Measure the voltage according to the value(s) in the table
below.
Standard voltage:
TESTER CONNECTION
SWITCH
CONDITION
SPECIFIED
CONDITION
J19-20 (MGC) - Body
ground
Ignition switch OFF
Below 1 V
Ignition switch ON
11 to 14 V
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
6.
CHECK AIR CONDITIONING AMPLIFIER (MGC VOLTAGE)
(a) Reconnect the J19 air conditioning amplifier connector.
(b) Measure the voltage according to the value(s) in the table
below.
Standard voltage:
TESTER CONNECTION
SWITCH
CONDITION
SPECIFIED
CONDITION
J19-20 (MGC) - Body
ground
Engine is running
Blower switch LO
A/C switch ON
Below 1 V
AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Automatic A...
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