Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - STEERING COLUMN
READ VALUE USING INTELLIGENT TESTER (COMMUNICATION STATE OF ENGINE SWITCH AND KEY CODE)
DTC B2602 Key Unlock Warning Switch Circuit Malfunction
DTC B2606 Key Code Confirm Signal Malfunction
DESCRIPTION
A key code confirmation signal (ON or OFF) is sent from the main body ECU to the multiplex tilt and telescopic ECU via the communication bus.
The multiplex tilt and telescopic ECU uses this signal to operate the auto away/return function.
| DTC Code | Detection Condition | Trouble Area |
| B2602 | Both of the following conditions continue: The key code confirmation signal is off. The engine switch is on (IG). | CAN communication system Entry and start system (for start function) Multiplex tilt and telescopic ECU |
| B2606 | IG signals and/or key code confirmation signals are not received correctly. | CAN communication system Entry and start system (for start function) Multiplex tilt and telescopic ECU |
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.CHECK OTHER DTC OUTPUT |
- HINT:
- The power tilt and power telescopic steering column system uses the CAN communication system, so check its diagnostic system before proceeding to troubleshooting.
Check if DTC B2621 is output.
| DTC Condition | Proceed to |
| B2621 is not output | A |
| B2621 is output | B |
- HINT:
If DTC B2621 is output, perform troubleshooting for B2621 first.
DTC B2621 indicates a communication interruption for the power tilt and power telescopic steering column system.
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| A | |
| 2.READ VALUE USING INTELLIGENT TESTER (COMMUNICATION STATE OF ENGINE SWITCH AND KEY CODE) |
Use the Data List to check if the communication of the key code and the engine switch are functioning properly.
| Tester Display | Measurement Item/Range | Normal Condition | Diagnostic Note |
| IG Switch (CAN) | Communication state of engine switch/ON or OFF | ON: Communication normal OFF: Communication interrupted | - |
| Key Code Confirm (CAN) | Communication state of key code confirmation signal/ON or OFF | ON: Communication normal OFF: Communication interrupted | - |
- OK:
- "ON" is displayed.
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| OK | |
| 3.RECONFIRM DTC |
Clear the DTCs ().
Check for DTCs ().
- OK:
- DTC B2602 and/or B2606 is not output.
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| OK | ||
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