DESCRIPTION
In this circuit, the cooler compressor assembly (compressor solenoid) receives a refrigerant compression demand signal from the air conditioning amplifier assembly.
Based on this signal, the cooler compressor assembly (compressor solenoid) changes the amount of compressor output.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Memory |
---|---|---|---|---|
B1451 |
Compressor Solenoid Circuit |
Any of the following conditions is met:
|
|
- |
Vehicle Condition |
|||
---|---|---|---|
Pattern 1 |
Pattern 2 |
||
Diagnosis Condition |
Ignition switch ON |
○ |
○ |
Malfunction Status |
Open in compressor solenoid circuit |
○ |
- |
Short in compressor solenoid circuit |
- |
○ |
|
Detection Time |
30 seconds or more |
30 seconds or more |
|
Number of Trips |
1 trip |
1 trip |
HINT:
The air conditioning amplifier assembly stores this DTC if the malfunction has occurred for the period of time indicated in the brackets.
WIRING DIAGRAM
PROCEDURE
1. |
INSPECT COMPRESSOR WITH PULLEY ASSEMBLY (COMPRESSOR SOLENOID) |
(a) Disconnect the cooler compressor assembly (compressor solenoid) connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
1 (SOL-) - 2 (SOL+) |
25°C (77°F) |
10.1 to 11.1 Ω |
NG |
REPLACE COMPRESSOR WITH PULLEY ASSEMBLY (COMPRESSOR SOLENOID) |
|
2. |
CHECK HARNESS AND CONNECTOR (COOLER COMPRESSOR ASSEMBLY (COMPRESSOR SOLENOID) - BODY GROUND) |
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
C72-1 (SOL-) - Body ground |
Always |
Below 1 Ω |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. |
CHECK HARNESS AND CONNECTOR (COOLER COMPRESSOR ASSEMBLY (COMPRESSOR SOLENOID) - AIR CONDITIONING AMPLIFIER ASSEMBLY) |
(a) Disconnect the F139 air conditioning amplifier assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
C72-2 (SOL+) - F139-3 (SOL+) |
Always |
Below 1 Ω |
C72-2 (SOL+) or F139-3 (SOL+) - Body ground |
Always |
10 kΩ or higher |
Result |
Proceed to |
---|---|
NG |
A |
OK (When troubleshooting according to the 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 |
|
4. |
CHECK FOR DTC |
(a) Clear the DTCs.
Click here
Body Electrical > Air Conditioner > Clear DTCs(b) Check for DTCs.
Click here
Body Electrical > Air Conditioner > Trouble Codes
Result |
Proceed to |
---|---|
DTCs are not output |
A |
DTCs are output |
B |
A |
USE SIMULATION METHOD TO CHECK |
B |
REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY |
Toyota CH-R Service Manual > Compressor(for Valeo Made): Removal
REMOVAL
PROCEDURE
1. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM (for HFC-134a(R134a))
Click here
2. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM (for HFO-1234yf(R1234yf))
Click here
3. REMOVE NO. 1 ENGINE UNDER COVER
Click here
4. REMOVE FAN AND GENERATOR V BELT
Click here
...
Toyota CH-R Service Manual > Power Steering System: System Description
SYSTEM DESCRIPTION
DESCRIPTION
The power steering system generates torque through the operation of the motor
and the reduction gear installed on the column shaft in order to assist steering
effort.
The power steering ECU assembly determines the direction and the amount of assist
power in ac ...