| Last Modified: 11-29-2007 | 1.6 S | |
| Service Category: Vehicle Interior | Section: Heating/Air Conditioning | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM000002VX5002X |
| Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM: DIAGNOSTIC TROUBLE CODE CHART (2008 Sequoia) | ||
DIAGNOSTIC TROUBLE CODE CHART
HINT:
If a trouble code is displayed during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to "See page" below.
|
DTC Code |
Detection Item |
Trouble Area |
Memory*4 |
See page |
|---|---|---|---|---|
|
B1411/11 |
Room Temperature Sensor Circuit |
- Cooler thermistor (front room temperature sensor) - Harness or connector between cooler thermistor (front room temperature sensor) and air conditioning amplifier - Air conditioning amplifier |
Memorized (8.5 min. or more) |
|
|
B1412/12 |
Ambient Temperature Sensor Circuit |
- Thermistor assembly (ambient temperature sensor) - Harness or connector between thermistor assembly (ambient temperature sensor) and Air conditioning amplifier - Air conditioning amplifier |
Memorized (8.5 min. or more) |
|
|
B1413/13 |
Evaporator Temperature Sensor Circuit |
- No.1 cooler thermistor (evaporator temperature sensor) - Air conditioning harness - Air conditioning amplifier |
Memorized (8.5 min. or more) |
|
|
B1417/17 |
Rear Evaporator Temperature Sensor Circuit |
- No. 2 air conditioning harness (Rear evaporator temperature sensor) - Wire harness between No. 2 air conditioning harness (rear evaporator temperature sensor) and rear air conditioning amplifier - Air conditioning amplifier |
Memorized (8.5 min. or more) |
|
|
B1419/19 |
Rear Room Temperature Sensor Circuit |
- Cooler (duct sensor) thermistor (Rear room temperature sensor) - Harness or connector between cooler (duct sensor) thermistor (Rear room temperature sensor) and air conditioning amplifier - Air conditioning amplifier |
Memorized (8.5 min. or more) |
|
|
B1421/21 |
Solar Sensor Circuit (Passenger Side) |
- Automatic light control sensor (solar sensor) - Harness or connector between automatic light control sensor (solar sensor) and air conditioning amplifier - Harness or connector between automatic light control sensor (solar sensor) and main body ECU - Main body ECU - Air conditioning amplifier |
Memorized (8.5 min. or more) |
|
|
B1422/22 |
Compressor Lock Sensor Circuit |
- Air conditioning compressor (lock sensor) - Compressor drive belt - Harness or connector between air conditioning compressor (lock sensor) and air conditioning amplifier - Air conditioning amplifier - CAN communication system |
Memorized (8.5 min. or more) |
|
|
B1423/23 |
Pressure Sensor Circuit |
- Air conditioning pressure sensor - Harness or connector between air conditioning pressure sensor and air conditioning amplifier - Air conditioning amplifier - Air conditioning system (leaks, blocked) |
- |
|
|
B1424/24 |
Solar Sensor Circuit (Driver Side) |
- Automatic light control sensor (solar sensor) - Harness or connector between automatic light control sensor (solar sensor) and air conditioning amplifier - Harness or connector between automatic light control sensor (solar sensor) and main body ECU - Main body ECU - Air conditioning amplifier |
Memorized (8.5 min. or more) |
|
|
B1441/41 |
Air Mix Damper Control Servo Motor Circuit (Passenger Side) |
- Air mix control damper servo (for passenger side) - Air conditioning harness - Air conditioning amplifier |
Memorized (30 sec. or more) |
|
|
B1442/42 |
Air Inlet Damper Control Servo Motor Circuit |
- Recirculation damper servo - Air conditioning harness - Air conditioning amplifier |
Memorized (30 sec. or more) |
|
|
B1443/43 |
Air Outlet Damper Control Servo Motor Circuit |
- Cooling unit damper servo sub-assembly (Air outlet control damper servo) - Air conditioning harness - Air conditioning amplifier |
Memorized (30 sec. or more) |
|
|
B1445/45 |
Passenger Side Cool Air Bypass Damper Control |
- Cool air bypass damper servo - Air conditioning harness - Air conditioning amplifier |
Memorized (30 sec. or more) |
|
|
B1446/46 |
Air Mix Damper Control Servo Motor Circuit (Driver Side) |
- Cooling unit damper servo sub-assembly (Air mix control damper servo) - Air conditioning harness - Air conditioning amplifier |
Memorized (30 sec. or more) |
|
|
B1447/47 |
Rear Air Mix Damper Control Servo Motor Circuit |
- Air mix rear control damper servo - No. 2 air conditioning harness - Harness or connector between No. 2 air conditioning harness and air conditioning amplifier - Air conditioning amplifier |
Memorized (30 sec. or more) |
|
|
B1449/49 |
Rear Air Outlet Damper Control Servo Motor Circuit |
- mode rear damper servo - No.2 air conditioning harness - Harness or connector between No. 2 air conditioning harness and air conditioning amplifier - Air conditioning amplifier |
Memorized (30 sec. or more) |
|
|
B1497/97 |
BUS IC Communication Malfunction |
- Air conditioning harness - No. 2 air conditioning harness - Air conditioning amplifier |
- |
|
|
B1499/99 |
Communication Malfunction (Engine and Meter ECU) |
-CAN communication system |
- |
|
HINT:
- *1: If the cabin temperature is approx. -18.6°C (-1.48°F) or lower, DTC B1411/11 may be output even though the system is normal.
- *2: If the ambient temperature is approx. -52.9°C (- 63.22°F) or lower, a trouble code may be output even though the system is normal.
- *3: If the check is performed in a dark place, DTC B1421/ 21 (solar sensor circuit abnormal) or DTC B1424/24 (solar sensor circuit abnormal) could be displayed.
- *4: The air conditioning amplifier memorizes the DTC of the respective malfunction that has occurred for a period of the time indicated in the brackets.
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