Toyota Camry (XV70): Compressor Solenoid Circuit (B1451)
DESCRIPTION
In this circuit, the compressor assembly with pulley (compressor solenoid)*1 or cooler compressor assembly (compressor solenoid)*2 receives refrigerant compression demand signals from the air conditioning amplifier assembly.
Based on this signal, the compressor assembly with pulley (compressor solenoid)*1 or cooler compressor assembly (compressor solenoid)*2 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 |
| - |
- *1: for A25A-FKS
- *2: for 2GR-FKS
WIRING DIAGRAM
for A25A-FKS
for 2GR-FKS
PROCEDURE
| 1. |
CONFIRM MODEL |
|
Result | Proceed to |
|---|---|
|
for A25A-FKS | A |
|
for 2GR-FKS | B |
| B |
.gif) | GO TO STEP 4 |
|
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| 2. |
INSPECT AIR CONDITIONING AMPLIFIER ASSEMBLY |
|
*a | Front view of wire harness connector (to Compressor Assembly with Pulley (Compressor Solenoid)) |
(a) Disconnect the C98 compressor assembly with pulley (compressor solenoid) connector.
(b) Connect an oscilloscope to terminal C98-2 (SOL+) and body ground and check the waveform.
OK:
Waveform is similar to that shown in the illustration.
|
Item | Content |
|---|---|
|
Tool Setting | 5 V/DIV., 500 ?s./DIV. |
|
Condition |
|
| OK | | REPLACE COMPRESSOR ASSEMBLY WITH PULLEY (COMPRESSOR SOLENOID)
|
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|
| 3. |
CHECK HARNESS AND CONNECTOR (COMPRESSOR ASSEMBLY WITH PULLEY (COMPRESSOR SOLENOID) - AIR CONDITIONING AMPLIFIER ASSEMBLY) |
(a) Disconnect the K54 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 |
|---|---|---|
|
C98-2 (SOL+) - K54-3 (SOL+) |
Always | Below 1 ? |
|
C98-2 (SOL+) or K54-3 (SOL+) - Other terminals and body ground |
Always | 10 k? or higher |
| OK | | REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
| 4. |
INSPECT AIR CONDITIONING AMPLIFIER ASSEMBLY |
|
*a | Front view of wire harness connector (to Cooler Compressor Assembly (Compressor Solenoid)) |
(a) Disconnect the C62 cooler compressor assembly (compressor solenoid) connector.
(b) Connect an oscilloscope to terminal C62-2 (SOL+) and body ground and check the waveform.
OK:
Waveform is similar to that shown in the illustration.
|
Item | Content |
|---|---|
|
Tool Setting | 5 V/DIV., 500 ?s./DIV. |
|
Condition |
|
| OK | | REPLACE COOLER COMPRESSOR ASSEMBLY (COMPRESSOR SOLENOID)
|
|
| 5. |
CHECK HARNESS AND CONNECTOR (COOLER COMPRESSOR ASSEMBLY (COMPRESSOR SOLENOID) - AIR CONDITIONING AMPLIFIER ASSEMBLY) |
(a) Disconnect the K54 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 |
|---|---|---|
|
C62-2 (SOL+) - K54-3 (SOL+) |
Always | Below 1 ? |
|
C62-2 (SOL+) or K54-3 (SOL+) - Other terminals and body ground |
Always | 10 k? or higher |
| OK | | REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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Installation
INSTALLATION CAUTION / NOTICE / HINT
CAUTION:
The engine assembly with transaxle is very heavy. Be sure to follow the procedure described in the repair manual, or the engine lifter may suddenly drop or the engine assembly with transaxle may fall off the engine lifter.
To prevent burns, do
LIN Communication Bus Malfunction (B2325)
DESCRIPTION If the main body ECU (multiplex network body ECU) detects a communication error with an ECU connected to the door bus lines for 8 seconds or more, DTC B2325 will be stored.
DTC No. Detection Item
DTC Detection Condition Trouble Area
B2325 LIN Communication Bus Ma
