- Engine running
- Blower switch: LO
- A/C switch: On
| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001FPED |
| Model Year Start: 2019 | Model: RAV4 | Prod Date Range: [11/2018 - ] |
| Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Gasoline Model): B1451; Compressor Solenoid Circuit; 2019 - 2024 MY RAV4 [11/2018 - ] | ||
|
DTC |
B1451 |
Compressor Solenoid Circuit |
DESCRIPTION
The compressor with pulley assembly receives refrigerant compression demand signals from the air conditioning amplifier assembly.
Based on this signal, the compressor with pulley assembly changes the amount of compressor output.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Memory |
|---|---|---|---|---|
|
B1451 |
Compressor Solenoid Circuit |
Open or short in compressor solenoid circuit |
|
- |
WIRING DIAGRAM
PROCEDURE
|
1. |
CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY |
|
*a |
Front view of wire harness connector (to Compressor with Pulley Assembly) |
(a) Disconnect the compressor with pulley assembly connector.
(b) Connect an oscilloscope to terminal 2 (SOL+) and body ground and check the waveform.
|
Item |
Content |
|---|---|
|
Terminal No. |
C44-2 (SOL+) - Body ground |
|
Tool Setting |
5 V/DIV., 500 μs./DIV. |
|
Condition |
|
OK:
Waveform is similar to that shown in the illustration.
| OK |
|
REPLACE COMPRESSOR WITH PULLEY ASSEMBLY
|
|
|
2. |
INSPECT COMPRESSOR WITH PULLEY ASSEMBLY |
(a) Remove the compressor with pulley assembly.
Click here
![2019 - 2020 MY RAV4 [11/2018 - 08/2020]; HEATING / AIR CONDITIONING: COMPRESSOR (for A25A-FKS): REMOVAL](/t3Portal/stylegraphics/info.gif)
(b) Inspect the compressor with pulley assembly.
Click here
| NG |
|
REPLACE COMPRESSOR WITH PULLEY ASSEMBLY
|
|
|
3. |
CHECK HARNESS AND CONNECTOR (COMPRESSOR WITH PULLEY ASSEMBLY - AIR CONDITIONING AMPLIFIER ASSEMBLY) |
(a) Disconnect the C44 compressor with pulley assembly connector.
(b) Disconnect the G46 air conditioning amplifier assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
C44-2 (SOL+) - G46-18 (SOL+) |
Always |
Below 1 Ω |
|
C44-2 (SOL+) or G46-18 (SOL+) - Other terminals and body ground |
Always |
10 kΩ or higher |
| OK |
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|