SYSTEM DESCRIPTION
The ECM sends the engine speed signal to the air conditioning amplifier assembly via CAN communication.
The air conditioning amplifier assembly reads the difference between compressor speed and engine speed. When the difference becomes too large, the air conditioning amplifier assembly determines that the cooler compressor assembly is locked and turns the magnet clutch assembly off.
DTC Code |
DTC Detection Condition |
Trouble Area |
---|---|---|
B1422 |
Open or short in the compressor lock sensor circuit. |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
HINT:
As DTC B1422 is also output when the compressor drive belt is damaged or loose, inspect the belt before performing troubleshooting.
PROCEDURE
1. |
CHECK FOR DTC (CAN COMMUNICATION SYSTEM) |
(a) Use the Techstream to check if the CAN communication system is functioning normally.
Result
Result |
Proceed to |
---|---|
CAN DTC is not output |
A |
CAN DTC is output |
B |
B | ![]() |
GO TO CAN COMMUNICATION SYSTEM |
|
2. |
INSPECT COOLER COMPRESSOR ASSEMBLY (A/C LOCK SENSOR) |
(a) Remove the cooler compressor assembly (A/C lock sensor) (See page
|
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
1 - 2 |
20°C (68°F) |
160 to 320 Ω |
NG | ![]() |
REPLACE COOLER COMPRESSOR ASSEMBLY (A/C LOCK SENSOR) |
|
3. |
CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - A/C LOCK SENSOR) |
(a) Disconnect the F42 amplifier connector.
(b) Disconnect the B41 sensor connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F42-8 (LOCK) - B41-1 |
Always |
Below 1 Ω |
F42-13 (SG-2) - B41-2 |
Always |
Below 1 Ω |
F42-8 (LOCK) - Body ground |
Always |
10 kΩ or higher |
F42-13 (SG-2) - Body ground |
Always |
10 kΩ or higher |
Result |
Proceed to |
---|---|
OK (When troubleshooting according to problem symptoms table) |
A |
OK (When troubleshooting according to the DTC) |
B |
NG |
C |
A | ![]() |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
B | ![]() |
REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY |
C | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Rear Airbag Sensor Assembly RH Initialization Incomplete (B1633/81,B1638/82)
DESCRIPTION
The circuit for the side collision sensor LH or RH (to determine deployment of
the front seat side airbag LH or RH and curtain shield airbag LH or RH) is composed
of the center airbag sensor, side airbag sensor LH or RH and rear airbag sensor ...
Removal
REMOVAL
PROCEDURE
1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
NOTICE:
When disconnecting the cable, some systems need to be initialized after the cable
is reconnected (See page ).
2. REMOVE REAR NO. 1 SPOILER COVER
3. REMOVE REAR SPOILER SUB ...