Lexus IS250 IS220d GSE20 ALE20 4GR-FSE STARTING
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK DTC OUTPUT (MULTIPLEX COMMUNICATION SYSTEM)
CHECK DTC OUTPUT (AUTOMATIC TRANSMISSION SYSTEM)
CHECK CONNECTORS
CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BODY GROUND)
INSPECT SHIFT LOCK CONTROL ECU
CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - SHIFT LOCK CONTROL ECU)
READ VALUE OF INTELLIGENT TESTER
DTC B2281 "P" Signal Malfunction
DESCRIPTION
The power source control ECU and the shift lock control ECU are connected by a cable and the BEAN. If the cable information and BEAN information are inconsistent, this DTC will be output.
- When the power source control ECU is replaced with a new one and the negative (-) battery terminal is connected, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.
| DTC No. | DTC Detection Condition | Trouble Area |
| B2281 |
Cable and BEAN between the power source control ECU and the shift lock control ECU are inconsistent |
Power source control ECU
Shift lock control ECU
ECM
Wire harness or connector
|
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.CHECK DTC OUTPUT (MULTIPLEX COMMUNICATION SYSTEM) |
Check for the multiplex network communication system DTCs B1210, B1214 and B1215.
- If the DTCs for the multiplex network communication system malfunction are output, inspect those DTCs first.
| | GO TO MULTIPLEX COMMUNICATION SYSTEM |
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| 2.CHECK DTC OUTPUT (AUTOMATIC TRANSMISSION SYSTEM) |
Check for the automatic transmission system DTC P0705.
- OK:
- DTC P0705 is not output.
- If DTC P0705 is output, perform troubleshooting for DTC P0705 first .
| | GO TO AUTOMATIC TRANSMISSION SYSTEM |
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|
Check that the connectors are securely connected and the terminals are not deformed or loose.
- OK:
- The connectors are securely connected and the terminals are not deformed or loose.
| | REPAIR OR REPLACE CONNECTORS |
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| 4.CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BODY GROUND) |
Disconnect the ECU connector.
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
| Tester Connection (Symbols) | Condition | Specified Condition |
| J55-6 (GND2) - Body ground | Always | Below 1 Ω |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| 5.INSPECT SHIFT LOCK CONTROL ECU |
Disconnect the shift lock control ECU connector.
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
| Tester Connection (Symbols) | Condition | Specified Condition |
| J48-11 (P2) - J48-8 (E) | Shift P position | Below 1 Ω |
| Shift non-P position | 10 kΩ or higher |
| | REPLACE SHIFT LOCK CONTROL ECU |
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| 6.CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - SHIFT LOCK CONTROL ECU) |
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
| Tester Connection (Symbols) | Condition | Specified Condition |
| J55-5 (P) - J48-11 (P2) | Always | Below 1 Ω |
| J55-5 (P) or J48-11 (P2) - Body ground | Always | 10 kΩ or higher |
| J48-8 (E) - Body ground | Always | Below 1 Ω |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| 7.READ VALUE OF INTELLIGENT TESTER |
Connect the intelligent tester to the DLC3.
Turn the engine switch on (IG).
Power Source Control:| Item | Measurement Item/Display (Range) | Normal Condition | Diagnostic Note |
| Shift P Sig | Shift P position/ ON or OFF | ON: Shift P position
OFF: Shift non-P position | - |
- OK:
- ON (shift P position) and OFF (shift non-P position) appear on the screen.
| | REPLACE POWER SOURCE CONTROL ECU |
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LEXUS IS250, IS220d / GSE20 ALE20
