Lexus IS250 IS220d GSE20 ALE20 - CAN COMMUNICATION
CHECK CAN BUS LINE FOR OPEN (POWER STEERING ECU BRANCH LINE)
CAN COMMUNICATION SYSTEM (for RHD) - Power Steering ECU Communication Stop Mode
DESCRIPTION
| Detection Item | Symptom | Trouble Area |
| Power Steering ECU Communication Stop Mode | "EPS" is not displayed on the "Communication Bus Check" screen of the intelligent tester Applies to "Power Steering ECU Communication Stop Mode" in the "DTC COMBINATION TABLE" | Power source circuit of the power steering ECU Power steering ECU branch line or connector Power steering ECU |
- HINT:
- "EPS" refers to the circuit that includes the power steering ECU.
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.CHECK CAN BUS LINE FOR OPEN (POWER STEERING ECU BRANCH LINE) |
Turn the engine switch off.
Disconnect the power steering ECU connector (A31).
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Tester Connection Condition Specified Value A31-2 (CANH) - A31-3 (CANL) Engine switch off 54 to 69 Ω
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| OK | |
| 2.CHECK WIRE HARNESS (IG, PGND) |
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Tester Connection Condition Specified Value A31-5 (PGND) - Body ground Always Below 1 Ω
Measure the voltage according to the value(s) in the table below.
- Standard voltage:
Tester Connection Condition Specified Value A31-9 (IG) - Body ground Engine switch on (IG) 10 to 14 V
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| OK | ||
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