Toyota 4Runner manuals

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

B1411/11

Room Temperature Sensor Circuit

- Cooler thermistor (room temperature sensor)

- Harness or connector

- Air conditioning amplifier assembly

Stored

(4 seconds or more)

If the front room temperature is approx. -18.6°C (-1.48°F) or less, DTC B1411/11 may be stored even though the system is normal.


B1412/12

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 B1412/12 may be stored even though the system is normal.


B1413/13

Evaporator Temperature Sensor Circuit

- No. 1 cooler thermistor

- Air conditioning harness assembly

- Air conditioning amplifier assembly

Stored

(4 seconds or more)

-


B1422/22

Compressor Lock Sensor Circuit

- Cooler compressor assembly (A/C lock sensor)

- Compressor drive belt

- Harness or connector

- Air conditioning amplifier assembly

- CAN communication system

-

-


B1441/41

Air Mix Damper Control Servo Motor Circuit (Passenger Side)

- Damper servo sub-assembly (front passenger side air mix damper servo)

- Air conditioning harness assembly

- Air conditioning amplifier assembly

Stored

(30 seconds or more)

-


B1442/42

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)

-


B1443/43

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)

-


B1446/46

Air Mix Damper Control Servo Motor Circuit (Driver Side)

- Damper servo sub-assembly (driver side air mix damper servo)

- Air conditioning harness assembly

- Air conditioning amplifier assembly

Stored

(30 seconds or more)

-


B1497/97

BUS IC Communication Malfunction

- Air conditioning harness assembly

- Air conditioning amplifier assembly

Stored

(10 seconds or more)

-


B14A2

Driver Side Solar Sensor Short Circuit

- Automatic light control sensor (solar sensor)

- Harness or connector

- Main body ECU (multiplex network body ECU)

- Air conditioning amplifier assembly

Stored

(4 seconds or more)

If the check is performed in a dark place, DTC B14A3 (front passenger side solar sensor short circuit) may also be stored.


B14A3

Front Passenger Side Solar Sensor Short Circuit

- Automatic light control sensor (solar sensor)

- Harness or connector

- Main body ECU (multiplex network body ECU)

- Air conditioning amplifier assembly

Stored

(4 seconds or more)

If the check is performed in a dark place, DTC B14A2 (driver side solar sensor short circuit) may also be stored.


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

-

-


Dtc Check / Clear
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Lost Communication with ECM (U0100,U0142,U0155)
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