SYSTEM DESCRIPTION
The ECM sends the engine speed signal to the A/C amplifier via CAN communication.
The A/C amplifier reads the difference between compressor speed and engine speed. When the difference becomes too large, the A/C amplifier determines that the compressor is locked, and turns the magnetic clutch off.
DTC No. |
DTC Detection Condition |
Trouble Area |
---|---|---|
B1422/22 |
Open or short in compressor lock sensor circuit |
|
WIRING DIAGRAM
PROCEDURE
1. |
CHECK CAN COMMUNICATION SYSTEM |
(a) Use the Techstream to check if the CAN communication system is functioning normally.
Result |
Proceed to |
---|---|
CAN DTC is not output |
A |
CAN DTC is output |
B |
B | ![]() |
GO TO CAN COMMUNICATION SYSTEM |
|
2. |
INSPECT A/C COMPRESSOR (A/C LOCK SENSOR) |
(a) Disconnect the A/C compressor connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
B9-1 (SSR+) - B9-2 (SSR-) |
20°C (68°F) |
160 to 320 Ω |
*1 |
Component without harness connected (A/C Compressor) |
NG | ![]() |
REPLACE A/C COMPRESSOR (A/C LOCK SENSOR) |
|
3. |
CHECK HARNESS AND CONNECTOR (A/C AMPLIFIER - A/C LOCK SENSOR) |
(a) Disconnect the A/C amplifier connector. |
|
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
Result:
|
|
A | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
B | ![]() |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
C | ![]() |
REPLACE A/C AMPLIFIER |
Startability Malfunction (P1604)
DESCRIPTION
This DTC is stored when the engine does not start even though the STA signal
is input or when the engine takes a long time to start, and when the engine speed
is low or the engine stalls just after the engine starts.
Using the Techstream, the ...
Operation Check
OPERATION CHECK
1. NOTICE WHEN CHECKING THE FOLLOWING
(a) Power door lock/unlock function:
This wireless door lock control function operates only when the following 3 conditions
are met:
(1) There is no key in the ignition key cylinder.
(2) All doors ar ...
Torque Converter Clutch Solenoid Performance (Shift Solenoid Valve SL) (P0741)
SYSTEM DESCRIPTION
The TCM uses signals from the throttle position sensor, air-flow meter, turbine
(input) speed sensor, intermediate (counter gear) speed sensor and crankshaft position
sensor to help determine the engagement timing of the lock-up clutch. ...