Component Location
General Description
LIN technology is , a serial communication system which is used for communicating only one signal, developed to substitute CAN network, Normally used for multi signal communiction. It is only single wire to make LIN communiction in order to make simple network that is not important speed.
ECM receives battery infromation such as battery voltage, current and temperature etc.) through the LIN, and uses these data as a information for controlling the battery status and charge.
DTC Description
U1112 is set when checksum error during LIN communication, communication frame error, parity bit error and data over flow occurs.
DTC Detecting Condition
Item | Detecting Condition | Possible Cause |
DTC Strategy | Signal Monitoring
| LIN communication modules (battery senosr, etc.) ECM |
Enable Conditions | IG "ON"
|
Threshold Value | Data error
|
Diagnostic Time | 1 sec.
|
Fail Safe | Fuel cut | NO | -
|
EGR Off | NO |
Fuel Limit | NO |
Check Lamp | OFF |
Diagnostic Circuit Diagram
Signal Waveform & Data
Fig 1) Bettery sensor LIN Communication signal waverform at idle.
- Transmission --> Hi : 80% of B+, Low : 20% of B+
- Receipt --> Hi : 70% of B+, Low : 30% of B+