Toyota CH-R Service Manual: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
- Use the following procedure to troubleshoot the occupant classification system.
- *: Use the Techstream.
PROCEDURE
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1. |
VEHICLE BROUGHT TO WORKSHOP |
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2. |
CUSTOMER PROBLEM ANALYSIS |
(a) Confirm problem symptoms.
Click here .gif)
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3. |
CHECK CAN COMMUNICATION SYSTEM* |
(a) Using the Techstream, check that the CAN communication system is functioning normally.
OK:
CAN communication system is functioning normally.
HINT:
- Refer to CAN Bus Check in CAN Communication System.
Click here
- The occupant detection ECU is connected to the CAN communication system. Therefore, before starting troubleshooting, make sure to check that there are no malfunctions in the CAN communication system.
| NG | .gif) |
GO TO CAN COMMUNICATION SYSTEM |
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4. |
PASSENGER AIRBAG ON/OFF INDICATOR CHECK |
(a) Refer to Diagnosis System.
Click here
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5. |
DTC CHECK (Present and History DTCs)* |
(a) Refer to DTC Check / Clear.
Click here
OK:
DTCs are not output.
| OK | |
GO TO PROBLEM SYMPTOMS TABLE |
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6. |
DIAGNOSTIC TROUBLE CODE CHART |
(a) Refer to Diagnostic Trouble Code Chart.
Click here
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7. |
CIRCUIT INSPECTION* |
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8. |
REPAIR |
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9. |
CLEAR DTCS (Present and History DTCs)* |
(a) Refer to DTC Check / Clear.
Click here
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10. |
DTC CHECK* |
(a) Refer to DTC Check / Clear.
Click here
OK:
DTCs are not output.
| NG | |
GO TO STEP 6 |
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11. |
SYMPTOM SIMULATION |
(a) Check the passenger airbag ON/OFF indicator condition.
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12. |
CONFIRMATION TEST |
| NEXT | |
END |
System Diagram
SYSTEM DIAGRAM
Communication Table
Transmitting ECU
(Transmitter)
Receiving ECU
Signal
Communication Method
Airbag Sensor Assembly
...
System Description
SYSTEM DESCRIPTION
GENERAL
(a) The occupant detection ECU estimates the weight of an occupant based on signals
received from the 2 occupant classification sensors. The occupant detection ECU
det ...
Other materials:
Toyota CH-R Service Manual > Lin Communication System: Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
LIN Communication System
DTC No.
Detection Item
Link
B1206
P/W Master Switch Communication Stop
B1249
Double Locking ECU Communication Stop
...
Toyota CH-R Service Manual > Toyota Entune System: Lost Communication with Body Control Module "B" (U0142,U0155,U0163)
DESCRIPTION
These DTCs are stored when a malfunction occurs in the CAN communication circuit.
HINT:
If CAN communication system DTCs are stored, they may also be stored for other
systems.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
...
Toyota C-HR (AX20) 2023-2025 Owner's Manual
Toyota CH-R Owners Manual
- For safety and security
- Instrument cluster
- Operation of each component
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Toyota CH-R Service Manual
- Introduction
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