Can Communication System Seat Belt Control Ecu Communication Stop Mode
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK CAN BUS LINE FOR DISCONNECTION (SEAT BELT CONTROL ECU SUB BUS LINE)
CHECK WIRE HARNESS (IG1, PGND)
CAN COMMUNICATION SYSTEM - Seat Belt Control ECU Communication Stop Mode |
DESCRIPTION
Detection Item
| Symptom
| Trouble Area
|
SEAT BELT CONTROL ECU COMMUNICATION STOP MODE
| - "PSB" is not displayed on the "Communication Bus Check of the intelligent tester
- Applies to "SEAT BELT CONTROL ECU COMMUNICATION STOP MODE" in the "DTC COMBINATION TABLE"
| - Power source or inside the seat belt control ECU
- seat belt control ECU sub bus line or connector
|
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.CHECK CAN BUS LINE FOR DISCONNECTION (SEAT BELT CONTROL ECU SUB BUS LINE) |
Turn the engine switch off.
Disconnect the seat belt control ECU (W30).
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Tester Connection
| Condition
| Specified Value
|
W30-4 (CANH) - W30-6 (CANL)
| Engine switch off
| 54 to 69 Ω
|
| | REPAIR OR REPLACE SEAT BELT CONTROL ECU SUB BUS LINE OR CONNECTOR (CAN-H, CAN-L) |
|
|
| 2.CHECK WIRE HARNESS (IG1, PGND) |
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Tester Connection
| Condition
| Specified Value
|
W30-18 (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
|
W30-3 (IG1) - Body ground
| Engine switch on (IG)
| 10 to 14 V
|
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| OK |
|
|
|
| REPLACE SEAT BELT CONTROL ECU |
|
