Toyota CH-R Service Manual: Compressor Solenoid Circuit (B1451)
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 | .gif) |
REPLACE COMPRESSOR WITH PULLEY ASSEMBLY (COMPRESSOR SOLENOID) |
|
.gif)
|
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
.gif)
(b) Check for DTCs.
Click here
|
Result |
Proceed to |
|---|---|
|
DTCs are not output |
A |
|
DTCs are output |
B |
| A | |
USE SIMULATION METHOD TO CHECK |
| B | |
REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY |
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DESCRIPTION
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KIA Niro EV / Hybrid (SG2) - (2021-2023) - Owner's manual
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