Toyota 4Runner: Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
HINT:
- If a trouble code is output during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to the "See page" below.
- *: The air conditioning amplifier stores the DTC of the respective malfunction that has been detected for the period of time indicated in parentheses.
|
DTC Code |
Detection Item |
Trouble Area |
Memory* |
Diagnostic Note |
See page |
|---|---|---|---|---|---|
|
B1412 |
Ambient Temperature Sensor Circuit |
- Cooler thermistor (ambient temperature sensor) - Harness or connector - Air conditioning amplifier assembly |
Stored (4 seconds or more) |
If the ambient temperature is approx. -52.9°C (-63.22°F) or less, DTC B1412 may be stored even though the system is normal. |
|
|
B1413 |
Evaporator Temperature Sensor Circuit |
- No. 1 cooler thermistor - Air conditioning harness assembly - Air conditioning amplifier assembly |
Stored (4 seconds or more) |
- |
|
|
B1422 |
Compressor Lock Sensor Circuit |
- Cooler compressor assembly (A/C lock sensor) - Compressor drive belt - Harness or connector - Air conditioning amplifier assembly - CAN communication system |
- |
- |
|
|
B1441 |
Air Mix Damper Control Servo Motor Circuit (Passenger Side) |
- Damper servo sub-assembly (air mix damper servo) - Air conditioning harness assembly - Air conditioning amplifier assembly |
Stored (30 seconds or more) |
- |
|
|
B1442 |
Air Inlet Damper Control Servo Motor Circuit |
- Recirculation damper servo sub-assembly - Air conditioning harness assembly - Air conditioning amplifier assembly |
Stored (30 seconds or more) |
- |
|
|
B1443 |
Air Outlet Damper Control Servo Motor Circuit |
- Damper servo sub-assembly (mode damper servo) - Air conditioning harness assembly - Air conditioning amplifier assembly |
Stored (30 seconds or more) |
- |
|
|
B1497 |
Communication Malfunction (Bus Ic) |
- Air conditioning harness assembly - Air conditioning amplifier assembly |
Stored (10 seconds or more) |
- |
|
|
U0100 |
Lost Communication with ECM |
- CAN communication system - ECM |
- |
- |
|
|
U0142 |
Lost Communication with Main Body ECU |
- CAN communication system - Main body ECU (multiplex network body ECU) |
- |
- |
|
|
U0155 |
Lost Communication with Combination Meter |
- CAN communication system - Combination meter assembly |
- |
- |
|
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Ambient Temperature Sensor Circuit (B1412)
DESCRIPTION
The cooler thermistor (ambient temperature sensor) is installed in the front
part of the cooler condenser assembly. This sensor is connected to the air conditioning
amplifier assembly ...
Compressor Lock Sensor Circuit (B1422)
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 comp ...
Other materials about Toyota 4Runner:
Reassembly
REASSEMBLY
PROCEDURE
1. INSTALL REAR PROPELLER SHAFT UNIVERSAL JOINT SPIDER BEARING
HINT:
Use the same procedure for all rear propeller shaft universal joint spider bearing.
(a) Apply MP grease No. 2 to a new spider and bearings.
NOTICE:
...
Center Airbag Sensor Assembly
Components
COMPONENTS
ILLUSTRATION
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. CHECK AIRBAG SENSOR ASSEMBLY (VEHICLE NOT INVOLVED IN COLLISION)
(a) Perform a diagnostic system check (See page
).
2. CHECK AIRBAG SENSOR ASSEMBLY (VEH ...
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