DTC Description

If abnormal MDPS CAN message is received, HECU sets DTC C1688.

DTC Detecting Condition

Item

Detecting Condition

Possible cause

DTC Strategy

CAN Message Monitoring

1.

Defected MDPS ECU

Threshold Value

VSM2 message count does not increase for 100 msec.

Mis-match between VSM2 message checksum and ESC(ESP) calculated checksum for 100 msec.

Diagnostic signal of VSM2 message as fault is detected for 100 msec.

The fault is not checked for 2 sec after ignition "ON"

Fail Safe

VSM inhibited(ESC[ESP] Only)

Warning Indicator Lamp Status

-

Clear Condition

Ignition "OFF" and then "ON"

Яндекс.Метрика