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DTC U1101 (No.1101): Lost communication with TCM
Wiring Diagram
[A]: BCM connector (viewed from harness side)
[B]: ECM connector (viewed from harness side)
[C]: Combination meter connector (viewed from harness side)
DTC Detecting Condition and Trouble Area
DTC detecting condition
BCM can not receive CAN data from TCM for
longer than specified time continuously.
DTC Confirmation Procedure
1) Connect scan tool to DLC with ignition switch turned OFF.
2) Turn ON ignition switch and clear DTC by using scan tool.
3) Start engine and run it for 1 min. or more.
4) Check DTC.
Body Electrical Control System:
[D]: TCM connector (equipped with A/T) (viewed from
harness side)
1. BCM
2. Junction block assembly
• CAN communication circuit
• BCM (included in junction block assembly)
• TCM
3. ECM
4. TCM (equipped with A/T)
5. Combination meter
Trouble area
10B-29
S4RS0AA204027
I4RS0AA20014-
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