CS35 2013.04
3.1.13-247 3.1.13-247Electronic Control System - ME7
DTC U0001, U0101, U0140
1. DTC Description
2. Possible Sources
3. Diagnosis Procedures
Fault Code Description Definition
U0001
CAN communication - related
diagnosis
ECM communicates with TCM and BCM via CAN
network and the diagnostic tool may be used to
access TCM, ECM and BCM through diagnostic
interface DLC.
U0101
Loss of communication between
ECU and TCM control module
U0140
Lost communication with the
BCM or signal abnormalities
Fault Code Test Tactics
Setting Conditions (Control
Strategy)
Fault
U0001
Hardware circuit inspection
Communication signal lost, signal logic
error.
CAN bus fault
TCM fault
ECM fault
BCM fault
U0101
U0140
Test Conditions Details/Results/Actions
1. General inspection
A. Inspect the related wiring harness connector for
signs of damage, poor contact, aging or loose.
Is it normal?
Y
Go to step 2.
N
Repair the fault.
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