General Description
This DTC sets when a communication error between SJB and other control units occur.
* Body CAN communication Control Units : BCM (Body Control Module), CLU (Cluster), SMK (Smart Key), SJB (Smart Junction Box), PSM (Power Seat Module).
CAN (Controller Area Network) : CAN is a serial bus type communication which links control units.
LIN (Local Interconnect Network) : LIN is serial communication type which is used in electrical control system. (This is less expensive)
Scheme 1
DTC Description
| Pattern | Status | Remark |
|---|---|---|
| 1 | CANH Circuit Open | B1602 is presented when IC detects one of errors among 7 types under normal communication condition. According to operation condition, some of module which are connected to CAN line may not detect B1602. Also, B1603 can be detected together. |
| 2 | CANL Circuit Open | |
| 3 | CANH Circuit Short to Power | |
| 4 | CANL Circuit Short to Power | |
| 5 | CANH Circuit Short to Ground | |
| 6 | CANL Circuit Short to Ground | |
| 7 | CANH and CANL Short to each other |
DTC DESCRIPTION CHART
This DTC sets when a communication error between SJB and other control units occur.
* Body CAN communication Control Units : BCM (Body Control Module), CLU (Cluster), SMK (Smart Key), SJB (Smart Junction Box), PSM (Power Seat Module).
CAN (Controller Area Network) : CAN is a serial bus type communication which links control units.
LIN (Local Interconnect Network) : LIN is serial communication type which is used in electrical control system. (This is less expensive)
Scheme 2
This DTC sets when a communication error between SJB and other control units occur.
(* Control Units : BCM (Body Control Module), CLU (Cluster), SMK (Smart Key), SJB (Smart Junction Box), PSM (Power Seat Module)
Case 1: After short between CAN Low Line and High Line, short to ground together.
Case 2: After short between CAN Low Line and High Line, short to power together.
* This code sets when the module is unable to transmit data on the CAN Line. It may be possible to receive data on the CAN Line.
This code reports "BUS OFF" status when a data transmit error count is over 255. The purpose is to verify the status of CAN controller and CAN communication line when error is detected.
Depending on operation condition, some modules which are connected to the CAN line may not detect B1603.
Also, B1602 coincides with B1603 at all times.
| CAUTION | Difference between CAN ERROR and CAN BUS ERROR CAN Error : MIL On, CAN Bus Error : No MIL |
This DTC sets when a communication error between SJB and other control units occur.
* Body CAN communication Control Units : BCM (Body Control Module), CLU (Cluster), SMK (Smart Key), SJB (Smart Junction Box), PSM (Power Seat Module).
CAN (Controller Area Network) : CAN is a serial bus type communication which links control units.
LIN (Local Interconnect Network) : LIN is serial communication type which is used in electrical control system. (This is less expensive)
Scheme 3
This code is outputted when BCM can't receive data from PSM by CAN Line for 10 sec.
This DTC sets when a communication error between SJB and other control units occur.
* Body CAN communication Control Units : BCM (Body Control Module), CLU (Cluster), SMK (Smart Key), SJB (Smart Junction Box), PSM (Power Seat Module).
CAN (Controller Area Network) : CAN is a serial bus type communication which links control units.
LIN (Local Interconnect Network) : LIN is serial communication type which is used in electrical control system. (This is less expensive)
Scheme 4
This code is outputted when BCM can't receive data from CLU by CAN Line for 10 sec.
This DTC sets when a communication error between SJB and other control units occur.
* Body CAN communication Control Units : BCM (Body Control Module), CLU (Cluster), SMK (Smart Key), SJB (Smart Junction Box), PSM (Power Seat Module).
CAN (Controller Area Network) : CAN is a serial bus type communication which links control units.
LIN (Local Interconnect Network) : LIN is serial communication type which is used in electrical control system. (This is less expensive)
Scheme 5
This code is outputted when BCM can't receive data from SJB by CAN Line for 10 sec.