- CAN communication system
- Main body ECU
- Front power seat control switch LH
- Combination meter
- Multiplex tilt and telescopic ECU
| Last Modified: 11-29-2007 | 1.6 C | |
| Service Category: Steering | Section: Steering Column | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM000000XZC019X |
| Title: STEERING COLUMN: POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM: DESCRIPTION (2008 Sequoia) | ||
|
DTC |
B2621 |
Communication Interruption |
DESCRIPTION
The multiplex tilt and telescopic ECU forms a network with the ECUs of other systems through the communication bus. Each ECU informs the other ECUs that they are connected to the network by outputting a specified signal (periodical signal) to the communication bus at regular intervals. The multiplex tilt and telescopic ECU detects the connection of each ECU based on the signal.
|
DTC Code |
Detection Condition |
Trouble Area |
|---|---|---|
|
B2621 |
Periodical signal from the specified ECU has stopped. |
|
INSPECTION PROCEDURE
PROCEDURE
|
1. |
CHECK DTC (CAN COMMUNICATION SYSTEM) |
(a) Check the DTC of the CAN communication system
.
Result
|
Result |
Proceed to |
|---|---|
|
DTC is not output |
A |
|
DTC is output |
B |
|
|
2. |
READ VALUE USING TECHSTREAM (MAIN BODY ECU COMMUNICATION SIGNAL) |
(a) Use the Data List to check if the main body ECU communication signal is functioning properly.
Tilt & Telescopic
|
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
J/B |
Communication state of main body ECU signal/OK or Interruption |
OK: Communication is normal Interruption: Communication is interrupted |
- |
OK:
"OK" is displayed.
|
|
3. |
READ VALUE USING TECHSTREAM (FRONT POWER SEAT CONTROL ECU AND SWITCH LH COMMUNICATION SIGNAL) |
(a) Use the Data List to check if the front power seat control ECU and switch LH communication signal is functioning properly.
Tilt & Telescopic
|
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
Receive from Seat ECU |
Communication state of front power seat control switch LH signal / OK or Interpt |
OK: Communication is normal Interpt: Communication is interrupted |
- |
OK:
"OK" is displayed.
|
|
4. |
READ VALUE USING TECHSTREAM (COMBINATION METER ECU COMMUNICATION SIGNAL) |
(a) Use the Data List to check if the combination meter ECU communication signal is functioning properly.
Tilt & Telescopic
|
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
Receive from Meter |
Communication state of combination meter signal / OK or Interpt |
OK: Communication is normal Interpt: Communication is interrupted |
- |
OK:
"OK" is displayed.
|
|
|