Lexus IS250 IS220d GSE20 ALE20 - PRE-CRASH SAFETY
DTC B2015 Open in Right Side Upper MOS
DTC B2016 Open in Right Side Lower MOS
DTC B2020 Open in Left Side Upper MOS
DTC B2021 Open in Left Side Lower MOS
DTC B2025 Right Side Current Detection Circuit Malfunction Hi
DTC B2026 Right Side Current Detection Circuit Malfunction Lo
DTC B2027 Right Side Over-Current Malfunction
DTC B2030 Left Side Current Detection Circuit Malfunction Hi
DTC B2031 Left Side Current Detection Circuit Malfunction Lo
DTC B2032 Left Side Over-Current Malfunction
DTC B2036 Power Supply Relay Malfunction Open
DTC B2040 EEPROM Malfunction
DTC B2041 Fall of Raised Voltage
DTC B2043 Fall of B+ Voltage
DTC B2047 Seat Belt Control ECU Inner Circuit Malfunction
DESCRIPTION
The DTCs above are output during the seat belt control ECU's self diagnosis.
| DTC No. | DTC Detection Condition | Trouble Area |
| B2015 | Open in right side upper MOS | Seat belt control ECU |
| B2016 | Open in right side lower MOS | Seat belt control ECU |
| B2020 | Open in left side upper MOS | Seat belt control ECU |
| B2021 | Open in left side lower MOS | Seat belt control ECU |
| B2025 | Malfunction in right side current detection HI circuit | Seat belt control ECU |
| B2026 | Malfunction in right side current detection LO circuit | Seat belt control ECU |
| B2027 | Over - current in right side circuit | Seat belt control ECU |
| B2030 | Malfunction in left side current detection HI circuit | Seat belt control ECU |
| B2031 | Malfunction in left side current detection LO circuit | Seat belt control ECU |
| B2032 | Over - current in left side circuit | Seat belt control ECU |
| B2036 | Open in power supply relay | Seat belt control ECU |
| B2040 | EEPROM malfunction | Seat belt control ECU |
| B2041 | Decline in raised voltage | Seat belt control ECU |
| B2043 | Fall of B+ Voltage | Seat belt control ECU |
| B2047 | Malfunction in the inner circuit of the seat belt control ECU | Seat belt control ECU |
INSPECTION PROCEDURE
- NOTICE:
- When the seat belt control ECU is replaced with a new one, INITIALIZATION must be performed .
| 1.CHECK DTC OUTPUT |
Turn the engine switch on (IG).
Clear the DTCs stored in memory .
Turn the engine switch off.
Turn the engine switch on (IG).
Check for the DTCs .
- OK:
- No DTC is output.
|
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| OK | ||
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LEXUS IS250, IS220d / GSE20 ALE20