The CAN is for sending and receiving the information for TCS(ESP) control, between the HECU and EMS/TCU.
This code shows in case that there is no signal to the CAN from TCU.
DTC No | Condition | Possible Cause |
C1612 | 1. In case that TCU message was not received for more than 500ms within normal voltage condition.2. The monitoring starts 2000 ms after power up. | - Open/short in CAN bus circuit. - Faulty CAN bus - Faulty TCU - Faulty HECU |
The TCS/ESP function is inhibited, while the ABS and EBD controls allowed.
The TCS/ESP warning lamp is ON, but the ABS and EBD warning lamps OFF.
CHECK DTC DETECTED IN HI-SCAN
Clear the DTC related to the CAN, from the EMS or TCU by using the HI-SCAN.
Check if any DTC related to the CAN is detected again, when the ignition switch ON.
Is any DTC related to the CAN, detected again?
▶ Problem is intermittent and the HECU memory was not cleared.
▶ Check open/short in circuit of the CAN
CHECK OPEN/SHORT IN CIRCUIT OF THE CAN
Check an open or short in the circuit between terminal 10 of the HECU connector and terminal 4 of PCM connector.
Check an open or short in the circuit between terminal 11 of the HECU connector and terminal 7 of PCM connector.
Is the circuit normal?
▶ Check and repair harness and connector.
▶ Check the PCM (refer to EE or TR group).
