DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
INSPECT FUSE (PWR HTR)
CHECK HARNESS AND CONNECTOR (COMBUSTION HEATER ASSEMBLY)
DTC 010 Over Voltage Shutoff
DTC 011 Under Voltage Shutoff
DESCRIPTION
| DTC No. | DTC Detection Condition | Trouble Area |
| 010 | Battery voltage is 14 V or more for 20 seconds or more. | Wire harness or connector between combustion heater assembly and battery
Battery
Alternator
Combustion heater assembly
|
| 011 | Battery voltage is 10 V or less for 20 seconds or more. |
WIRING DIAGRAM
INSPECTION PROCEDURE
- Before performing the following procedures, check the battery and alternator and confirm that they are operating normally (for the Battery, for the alternator).
Remove the PWR HTR fuse from the engine room R/B and J/B No. 1.
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
| Inspection item | Condition | Specified condition |
| PWR HTR fuse | Always | Below 1 Ω |
| 2.CHECK HARNESS AND CONNECTOR (COMBUSTION HEATER ASSEMBLY) |
Disconnect the connector from the combustion heater assembly.
Measure the voltage and resistance according to the value(s) in the tables below.
- Standard voltage:
Tester connection
(Symbols) | Condition | Specified condition |
| A51-5 (B) - Body ground | Always | 10 to 14 V |
- Standard resistance:
Tester connection
(Symbols) | Condition | Specified condition |
| A51-1 (E) - Body ground | Always | Below 1 Ω |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| OK | |
| |
| REPLACE COMBUSTION HEATER ASSEMBLY |
|
LEXUS IS250, IS220d / GSE20 ALE20
