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 compressor is locked, and turns the magnet-clutch assembly off.
DTC No. |
DTC Detection Condition |
Trouble Area |
---|---|---|
B1422 |
Open or short in A/C lock sensor circuit |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
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 |
NG |
GO TO CAN COMMUNICATION SYSTEM |
|
2. |
INSPECT A/C LOCK SENSOR |
(a) Remove the A/C lock sensor (See page ).
(b) Inspect the A/C lock sensor (See page ).
NG |
REPLACE A/C LOCK SENSOR |
|
3. |
CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - COOLER COMPRESSOR ASSEMBLY) |
(a) Disconnect the A1 cooler compressor assembly connector.
(b) Disconnect the A14 air conditioning amplifier assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
A14-4 (LOCK) - A1-2 |
Always |
Below 1 Ω |
A14-33 (SG-1) - A1-3 |
Always |
Below 1 Ω |
A14-4 (LOCK) or A1-2 - Body ground |
Always |
10 kΩ or higher |
A14-33 (SG-1) or A1-3 - Body ground |
Always |
10 kΩ or higher |
Result |
Proceed to |
---|---|
NG |
A |
OK (When troubleshooting according to Problem Symptoms Table) |
B |
OK (When troubleshooting according to the DTC) |
C |
A |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
B |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
C |
REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY |
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
The wireless door lock control system troubleshooting procedure is based
on the premise that the power door lock control system is operating normally.
Check the power door lock control system first before troubleshooting the
wireless door lock cont ...
Voice is not Recognized
PROCEDURE
1.
CHECK CONDITION
(a) Check if the system voice recognition level is low for a particular voice.
Result
Result
Proceed to
System voice recognition level is low for any voice.
A
System vo ...
System Description
SYSTEM DESCRIPTION
1. NAVIGATION SYSTEM OUTLINE
(a) Vehicle position tracking methods
It is essential that the navigation system correctly tracks the current vehicle
position and displays it on the map. There are 2 methods to track the current vehicle
position: autonomous (dead reckoning) and ...