| Last Modified: 11-27-2007 | 1.6 S | |
| Service Category: Vehicle Interior | Section: Heating/Air Conditioning | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM000002LIN005X |
| Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM: DIAGNOSTIC TROUBLE CODE CHART (2008 LX570) | ||
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.
Air Conditioning Amplifier
|
DTC Code |
Detection Item |
Trouble Area |
Memory* |
Diagnostic Note |
See page |
|---|---|---|---|---|---|
|
B1411/11 |
Room Temperature Sensor Circuit |
- Front room temperature sensor - Harness or connector between room temperature sensor and air conditioning amplifier assembly - Air conditioning amplifier assembly |
Stored (8.5 min. or more) |
If the front side 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 |
- Ambient temperature sensor - Harness or connector between ambient temperature sensor and air conditioning amplifier assembly - Air conditioning amplifier assembly |
Stored (8.5 min. or more) |
If ambient temperature is approx. -52.9°C (-63.22°F) or less, a trouble code 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 (8.5 min. or more) |
- |
|
|
B1417/17 |
Rear Evaporator Temperature Sensor Circuit |
- Harness or connector between No. 2 air conditioning harness assembly and air conditioning amplifier assembly - No. 2 air conditioning harness assembly (rear evaporator temperature sensor) - Air conditioning amplifier assembly |
Stored (8.5 min. or more) |
- |
|
|
B1418/18 |
Exhaust Gas Sensor Circuit |
- Exhaust gas sensor (smog ventilation sensor) - Harness or connector between exhaust gas sensor (smog ventilation sensor) and air conditioning amplifier assembly - Air conditioning amplifier assembly |
- |
- |
|
|
B1419/19 |
Rear Room Temperature Sensor Circuit |
- Rear room temperature sensor LH - Harness or connector between rear room temperature sensor LH and air conditioning amplifier assembly - Air conditioning amplifier assembly |
Stored (8.5 min. or more) |
If the rear driver side room temperature is approx. -18.6°C (-1.48°F) or less, DTC B1419/19 may be stored even though the system is normal. |
|
|
B1421/21 |
Solar Sensor Circuit (Passenger Side) |
- Automatic light control sensor (solar sensor) - Harness or connector between solar sensor and air conditioning amplifier assembly - Harness or connector between solar sensor and main body ECU (cowl side junction block LH) - Main body ECU (cowl side junction block LH) - Air conditioning amplifier assembly |
Stored (8.5 min. or more) |
If the check is performed in a dark place, DTC B1424/24 (solar sensor circuit (driver side)) may also be stored. |
|
|
B1422/22 |
Compressor Lock Sensor Circuit |
- Cooler compressor assembly (A/C lock sensor) - Compressor drive belt - Harness or connector between cooler compressor assembly and air conditioning amplifier assembly - Air conditioning amplifier assembly - CAN communication line |
- |
- |
|
|
B1423/23 |
Pressure Sensor Circuit |
- Pressure sensor - Harness or connector - Cooler expansion valve (blocked, stuck) - Cooler condenser assembly (blocked, deterioration of cooling capacity due to dirt) - Cooler dryer (moisture in the refrigerant cycle cannot be absorbed) - Condenser fan (condenser cannot be cooled down) - Air conditioning system (leaks, blocked) - Refrigerant pipe line - Air conditioning amplifier assembly |
- |
- |
|
|
B1424/24 |
Solar Sensor Circuit (Driver Side) |
- Automatic light control sensor (solar sensor) - Harness or connector between solar sensor and air conditioning amplifier assembly - Harness or connector between solar sensor and main body ECU (cowl side junction block LH) - Main body ECU (cowl side junction block LH) - Air conditioning amplifier assembly |
Stored (8.5 min. or more) |
If the check is performed in a dark place, DTC B1421/21 (solar sensor circuit (passenger side)) may also be stored. |
|
|
B1429/29 |
Rear Air Foot Duct Sensor Circuit on Front Passenger Side |
- Duct sensor RH - Harness or connector (duct sensor RH) - Air conditioning amplifier assembly |
Stored (8.5 min. or more) |
- |
|
|
B1441/41 |
Air Mix Damper Control Servo Motor Circuit (Passenger Side) |
- Air mix servo motor (for front passenger side) - Air conditioning harness assembly - Air conditioning amplifier assembly |
Stored (30 sec.) |
- |
|
|
B1442/42 |
Air Inlet Damper Control Servo Motor Circuit |
- REC/FRS damper servo motor - Air conditioning harness assembly - Air conditioning amplifier assembly |
Stored (30 sec.) |
- |
|
|
B1443/43 |
Air Outlet Damper Control Servo Motor Circuit |
- Air outlet damper servo motor (for driver side mode) - Air conditioning harness assembly - Air conditioning amplifier assembly |
Stored (30 sec.) |
- |
|
|
B1445/45 |
Passenger Side Cool Air Bypass Damper Control |
- Cool air bypass damper servo motor - Air conditioning harness assembly - Air conditioning amplifier assembly |
Stored (30 sec.) |
- |
|
|
B1446/46 |
Air Mix Damper Control Servo Motor Circuit (Driver Side) |
- Air mix damper servo motor (for driver side) - Air conditioning harness assembly - Air conditioning amplifier assembly |
Stored (30 sec.) |
- |
|
|
B1447/47 |
Rear Air Mix Damper Control Servo Motor Circuit on Driver Side |
- Rear air mix damper servo motor LH - No. 2 air conditioning harness assembly - Harness or connector between No. 2 air conditioning harness assembly and air conditioning amplifier assembly - Air conditioning amplifier assembly |
Stored (30 sec.) |
- |
|
|
B1448/48 |
Passenger Side FACE Servo Motor Circuit |
- Air outlet damper servo motor (for front passenger side mode) - Air conditioning harness assembly - Air conditioning amplifier assembly |
Stored (30 sec.) |
- |
|
|
B1449/49 |
Rear Air Outlet Damper Control Servo Motor Circuit |
- Rear air outlet damper servo motor - No. 2 air conditioning harness assembly - Harness or connector between No. 2 air conditioning harness assembly and air conditioning amplifier assembly - Air conditioning amplifier assembly |
Stored (30 sec.) |
- |
|
|
B1457/57 |
Driver Side Air Outlet Damper Control Servo Motor Circuit |
- Front air mix damper servo motor (for driver side rear air flow) - Air conditioning harness assembly - Air conditioning amplifier assembly |
Stored (30 sec.) |
- |
|
|
B1458/58 |
Passenger Side Air Outlet Damper Control Servo Motor Circuit |
- Front air mix damper servo motor (for front passenger side rear air flow) - Air conditioning harness assembly - Air conditioning amplifier assembly |
Stored (30 sec.) |
- |
|
|
B1461/61 |
Emission Gas NOx Sensor Circuit |
- Exhaust gas sensor (smog ventilation sensor) - Harness or connector between exhaust gas sensor (smog ventilation sensor) and air conditioning amplifier assembly - Air conditioning amplifier assembly |
- |
- |
|
|
B1467/67 |
Rear Air Foot Duct Sensor Circuit on Driver Side |
- Duct sensor LH - Harness or connector (duct sensor LH) - Air conditioning amplifier assembly |
Stored (8.5 min. or more) |
- |
|
|
B1468/68 |
Rear Passenger Side Room Temperature Sensor Circuit |
- Rear room temperature sensor RH - Harness or connector between rear room temperature sensor RH and air conditioning amplifier assembly - Air conditioning amplifier assembly |
Stored (8.5 min. or more) |
If the rear passenger side room temperature is approx. -18.6°C (-1.48°F) or less, DTC B1468/68 may be stored even though the system is normal. |
|
|
B1486/86 |
Driver Side Air Outlet Damper Control Servo Motor Circuit |
- Air outlet damper servo motor (for rear seat mode) - Air conditioning harness assembly - Air conditioning amplifier assembly |
Stored (30 sec.) |
- |
|
|
B1488/88 |
Rear Air Mix Damper Control Servo Motor Circuit on Front Passenger Side |
- Rear air mix damper servo motor RH - No. 2 air conditioning harness assembly - Harness or connector between No. 2 air conditioning harness assembly and air conditioning amplifier assembly - Air conditioning amplifier assembly |
Stored (30 sec.) |
- |
|
|
B1497/97 |
BUS IC Communication Malfunction |
- Air conditioning harness assembly - Air conditioning amplifier assembly |
- |
- |
|
|
B1499/99 |
Multiplex Communication Circuit |
- Air conditioning amplifier assembly - ECM - Meter ECU - CAN communication line |
- |
- |
|
*: The air conditioning amplifier stores the DTC of the respective malfunction that has occurred for the period of time indicated in the brackets.
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