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 |
---|---|---|
B1422/22 |
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 A35 and A36 air conditioning amplifier assembly connectors.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
A35-7 (LOCK) - A1-2 (SSR+) |
Always |
Below 1 Ω |
A36-28 (SG-8) - A1-3 (SSR-) |
Always |
Below 1 Ω |
A35-7 (LOCK) or A1-2 (SSR+) - Body ground |
Always |
10 kΩ or higher |
A36-28 (SG-8) or A1-3 (SSR-) - 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 |
Precaution
PRECAUTION
1. IGNITION SWITCH EXPRESSIONS
(a) The type of ignition switch used on this model differs according to the specifications
of the vehicle. The expressions listed in the table below are used in this section.
Expression
Ignition Switch (Position)
Engine ...
Components
COMPONENTS
ILLUSTRATION
*1
CHARCOAL CANISTER ASSEMBLY
*2
CHARCOAL CANISTER FUEL HOSE
*3
CHARCOAL CANISTER LEAK DETECTION PUMP SUB-ASSEMBLY
*4
FUEL TANK VENT HOSE
*5
FUEL TANK ...
Pressure Control Solenoid "B" Electrical (Shift Solenoid Valve SL2) (P0778)
DESCRIPTION
Changing from 1st to 6th is performed by the ECM turning shift solenoid valves
SL1, SL2, SL3 and SL4 on and off. If an open or short circuit occurs in any of the
shift solenoid valves, the ECM controls the remaining normal shift solenoid valves
to allow the vehicle to be operated ...