1538-1539 / 1904
ELECTRICAL
36
Sr
No DTC Code
DTC
Descriptio
n
Minimum Time for
Fault Setting /
Tester Visibility,
Assuming Fault
was created while
Ignition was OFF
Impact on customer Probable cause
Investigation/Rectificati
on/Repair action
6
U0101 08
Lost
Communic
ation With
TCM - Bus
Signal /
Message
Failures
1 to 1.25s
Gear cannot be
changed. TCM will go
into default mode.
TCM Lamp ON
1. TCM ECU is connected
properly in the vehicle.
2. TCM ECU battery/Ignition
fuse is not connected
properly in Fuse Relay Box.
3. Improper/ No Grounding.
4. Permanent open circuit
failure in CAN High line of
TCM stub (or connector) in
wiring harness.
5. Permanent open circuit
failure in CAN Low line of
TCM stub (or connector) in
wiring harness.
6. TCM ECU CAN High or
Low line terminal back out at
TCM wiring harness
connector.
1. Check if TCM ECU is
connected properly in the
vehicle.
2. Check if TCM ECU
Ignition/Battery fuse is
connected properly in
Fuse Relay Box (EFRB) ,
if fuse not present or
blown connect/replace
the fuse.
3. Check for ground line
connected properly.
4. Check if TCM ECU
CAN lines are connected
properly in vehicle.
5. Repair the wiring
harness.