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 |
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms. If multiple
suspected areas are listed, the potential causes of the symptoms are listed in order
of probability in the "Suspected Area" column of ...
Internal Control Module A/D Processing Performance (P060B)
MONITOR DESCRIPTION
This DTC is stored when a communication error occurs in the ECM.
DTC Code
DTC Detection Condition
Trouble Area
P060B
There is an ECM main CPU communication error (1 trip detecti ...
AVC-LAN Circuit
DESCRIPTION
Each unit of the navigation system connected to the AVC-LAN (communication bus)
transmits switch signals via AVC-LAN communication.
If a short to +B or short to ground occurs in the AVC-LAN, the navigation system
will not function normally be ...