Component Location
General Description

The HECU send requirement data, such as Torque reduction, the number of fuel cut cylinders, and ESP control requests, to the Engine PCM(ECM & TCM) through CAN bus line.

The Engine PCM(ECM) performs fuel cut functions according to requests from the HECU and retards ignition timing by torque reduction requests.

The PCM(TCM) maintains current gear positions during ESP control time, in order not to increase power which causes a Kickdown shift.

DTC Description

The HECU checks the CAN communication lines for normal ESP control, and sets this code if re-initialization is tried for 15 times in sequence without success.

DTC Detecting Condition

Item

Detecting Condition

Possible cause

DTC Strategy

● Open or short monitoring

● Open or short circuit in CAN line

Monitoring Period

● Continuous

Enable Conditions

● A CAN BUS off fault is established if re-initialization is tried for 15 times in sequence without success.

Fail Safe

● Inhibit the ESP control and allow the ABS/EBD control.

Schematic Diagram
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