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CAN COMMUNICATION SYSTEM > DIAGNOSTIC TROUBLE CODE CHART

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Power Management Control ECU Output DTCs (Intelligent tester Display/PowerManagement1) 
DTC Code
Detection Item
Trouble Area
See page
U0104
Lost Communication with Driving Support ECU
1. Driving support ECU branch
wire or connector
2. Power source circuit of driving
support ECU
3. Driving support ECU
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U1002
Lost Communication with Gateway Module (Power Management1)
1. Open or short in CAN No. 2
bus main wire or connector
2. Open or short in CAN No. 2
bus branch wire or connector
3. Power management control
ECU
4. Driving support ECU
5. Seat belt control ECU
6. Parking assist ECU
7. CAN No. 3 junction connector
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U1100
Lost Communication with Seat Belt Control ECU
1. Seat belt control ECU branch
wire or connector
2. Power source circuit of seat
belt control ECU
3. Seat belt control ECU
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U110B
Lost Communication with Parking Assist Control Module "B"
1. Parking assist ECU branch
wire or connector
2. Power source circuit of parking
assist ECU
3. Parking assist ECU
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Power Management Control ECU Output DTCs (Intelligent tester Display/PowerManagement2) 
DTC Code
Detection Item
Trouble Area
See page
U0100
Lost Communication with ECM / PCM
1. ECM main wire or connector
2. Power source circuit of ECM
3. ECM
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U0129
Lost Communication with Brake System Control Module
1. Skid control ECU branch wire
or connector
2. Power source circuit of skid
control ECU
3. Skid control ECU
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U0164
Lost Communication with A/C ECU
1. Air conditioning amplifier
branch wire or connector
2. Power source circuit of air
conditioning amplifier
3. Air conditioning amplifier
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U1002
Lost Communication with Gateway Module (Power Management2)
1. Open or short in power
management bus main wire or
connector
2. Open or short in power
management bus branch wire or
connector
3. Power management control
ECU
4. ECM
5. Air conditioning amplifier
6. Skid control ECU
7. CAN No. 4 junction connector
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Driving Support ECU Output DTCs (Intelligent tester Display/Pre-Crash2) 
DTC Code
Detection Item
Trouble Area
See page
U1002
Lost Communication with Gateway Module (Parking Assist Bus)
1. Open or short in parking assist
bus main wire or connector
2. Open or short in parking assist
bus branch wire or connector
3. Driving support ECU
4. CAN No. 5 junction connector
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