C1612
DTC C1612 CAN TIME-OUT TCUDESCRIPTION
The CAN is for sending and receiving the information for TCS (ESC) control, between the HECU and EMS/TCU. This code shows in case that there is no signal to the CAN from TCU.
DTC Detecting Condition:
FAIL-SAFE FUNCTION
The TCS/ESC function is inhibited, while the ABS and EBD controls allowed.
The TCS/ESC warning lamp is ON, but the ABS and EBD warning lamps OFF.
INSPECTION PROCEDURE
1. CHECK DTC DETECTED IN HI-SCAN
1. Clear the DTC related to the CAN, from the EMS or TCU by using the HI-SCAN.
2. 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?
NO - Problem is intermittent and the HECU memory was not cleared.
YES - Check open/short in circuit of the CAN.
2. CHECK OPEN/SHORT IN CIRCUIT OF THE CAN
1. Check an open or short in the circuit between terminal 10 of the HECU connector and terminal 4 of PCM connector.
2. 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?
NO - Check and repair harness and connector.
YES - Check the PCM.