Description
ECM forcibly switches to the mode that inhibits engine start, when engine start operation is performed 5 times or more while communication between ECM and BCM is not normal.
DTC DETECTION LOGIC
NOTE: If DTC P1610 is displayed with other DTC (for BCM or ENGINE), first
perform the trouble diagnosis for other DTC.

DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check DTC in "Self Diagnostic Result" mode of ENGINE using CONSULT.
Is DTC detected?
YES >> Go to SEC "Diagnosis Procedure".
NO >> Inspection End.
1.CHECK ENGINE START FUNCTION
If detected, erase the DTC after fixing.
>> Inspection End.
U0140 Lost communication (BCM)
DTC Logic
DTC DETECTION LOGIC
DTC
Trouble diagnosis name
DTC detection condition
Possible causes
U0140
Lost Communication With Body
Control Module
When the ignition switch is ON,
TCM is unable to receive the
CAN communications signal
from BCM continuously ...
VDC OFF Indicator lamp
Component Function Check
1.CHECK VDC OFF INDICATOR LAMP FUNCTION
Check that VDC OFF indicator lamp in combination meter turns ON for
approximately 2 seconds after ignition
switch is turned ON.
Is the inspection result normal?
YES >> Inspection End.
NO >> Proceed to diagnosis pr ...