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CAN Communication System (Diagnostic Codes (U0100 - U1002)): Overview Lexus GS IV

Communication Devices 19 illustrations ~412 words

DESCRIPTION

DTC CodeDTC Detection ConditionTrouble Area
U0100There is no communication from the ECM.Power source or inside of ECM ECM CAN main wire or connector ECM

Scheme 110

Scheme 110: WIRING DIAGRAM
Scheme 110: WIRING DIAGRAM
DTC CodeDTC Detection ConditionTrouble Area
U0104There is no communication from the driving support ECU assembly.Power source or inside of driving support ECU assembly Driving support ECU assembly CAN branch wire or connector Driving support ECU assembly
U1104
  1. For vehicles with a dynamic radar cruise control system.

Scheme 111

Scheme 111: WIRING DIAGRAM
Scheme 111: WIRING DIAGRAM
DTC CodeDTC Detection ConditionTrouble Area
U0122There is no communication from the skid control ECU assembly.Power source or inside of skid control ECU assembly Skid control ECU assembly CAN branch wire or connector Skid control ECU assembly
U0129

Scheme 112

Scheme 112: WIRING DIAGRAM
Scheme 112: WIRING DIAGRAM
DTC CodeDTC Detection ConditionTrouble Area
U0132There is no communication from the absorber control ECU.Power source or inside of absorber control ECU Absorber control ECU CAN branch wire or connector Absorber control ECU

Scheme 113

Scheme 113: WIRING DIAGRAM
Scheme 113: WIRING DIAGRAM
DTC CodeDTC Detection ConditionTrouble Area
U0140There is no communication from the main body ECU (multiplex network body ECU).Power source or inside of main body ECU (multiplex network body ECU) Main body ECU (multiplex network body ECU) CAN branch wire or connector Main body ECU (multiplex network body ECU) Cowl side junction block LH
U0142

Scheme 114

Scheme 114: WIRING DIAGRAM
Scheme 114: WIRING DIAGRAM
DTC CodeDTC Detection ConditionTrouble Area
U0182There is no communication from the headlight swivel ECU assembly (AFS ECU).Power source or inside of headlight swivel ECU assembly (AFS ECU) Headlight swivel ECU assembly (AFS ECU) CAN branch wire or connector Headlight swivel ECU assembly (AFS ECU)

Scheme 115

Scheme 115: WIRING DIAGRAM
Scheme 115: WIRING DIAGRAM
DTC CodeDTC Detection ConditionTrouble Area
U0199There is no communication from the front multiplex network door ECU RH.Power source or inside of front multiplex network door ECU RH Front multiplex network door ECU RH CAN branch wire or connector Front multiplex network door ECU RH

Scheme 116

Scheme 116: WIRING DIAGRAM
Scheme 116: WIRING DIAGRAM
DTC CodeDTC Detection ConditionTrouble Area
U0200There is no communication from the front multiplex network door ECU LH.Power source or inside of front multiplex network door ECU LH Front multiplex network door ECU LH CAN branch wire or connector Front multiplex network door ECU LH

Scheme 117

Scheme 117: WIRING DIAGRAM
Scheme 117: WIRING DIAGRAM
DTC CodeDTC Detection ConditionTrouble Area
U0208There is no communication from the position control ECU assembly LH*1 or power seat switch assembly*2.Power source or inside of position control ECU assembly LH*1 or power seat switch assembly*2 Position control ECU assembly LH*1 or power seat switch assembly*2 CAN branch wire or connector Position control ECU assembly LH*1 or power seat switch assembly*2
  1. *1: except Standard Seat Type
  2. *2: for Standard Seat Type

Scheme 118

Scheme 118: WIRING DIAGRAM
Scheme 118: WIRING DIAGRAM

Scheme 119

Scheme 119
Scheme 119
DTC CodeDTC Detection ConditionTrouble Area
U0209There is no communication from the position control ECU assembly RH.Power source or inside of position control ECU assembly RH Position control ECU assembly RH CAN branch wire or connector Position control ECU assembly RH
  1. For vehicles with the luxury seat type.

Scheme 120

Scheme 120: WIRING DIAGRAM
Scheme 120: WIRING DIAGRAM
DTC CodeDTC Detection ConditionTrouble Area
U0230There is no communication from the luggage closer motor assembly.Power source or inside of luggage closer motor assembly Luggage closer motor assembly CAN branch wire or connector Luggage closer motor assembly
  1. For vehicles with a power trunk lid system.

Scheme 121

Scheme 121: WIRING DIAGRAM
Scheme 121: WIRING DIAGRAM
DTC CodeDTC Detection ConditionTrouble Area
U0232There is no communication from the blind spot monitor sensor LH.Power source or inside of blind spot monitor sensor LH Blind spot monitor sensor LH CAN branch wire or connector Blind spot monitor sensor LH
  1. For vehicles with a blind spot monitor system.

Scheme 122

Scheme 122: WIRING DIAGRAM
Scheme 122: WIRING DIAGRAM
DTC CodeDTC Detection ConditionTrouble Area
U0233There is no communication from the blind spot monitor sensor RH.Power source or inside of blind spot monitor sensor RH Blind spot monitor sensor RH CAN branch wire or connector Blind spot monitor sensor RH
  1. For vehicles with a blind spot monitor system.

Scheme 123

Scheme 123: WIRING DIAGRAM
Scheme 123: WIRING DIAGRAM
DTC CodeDTC Detection ConditionTrouble Area
U0235There is no communication from the millimeter wave radar sensor assembly.Power source or inside of millimeter wave radar sensor assembly Millimeter wave radar sensor assembly CAN main wire or connector Millimeter wave radar sensor assembly
  1. For vehicles with a dynamic radar cruise control system.

Scheme 124

Scheme 124: WIRING DIAGRAM
Scheme 124: WIRING DIAGRAM
DTC CodeDTC Detection ConditionTrouble Area
U0293There is no communication from the power management control ECU.Power source or inside of power management control ECU Power management control ECU CAN main wire or connector Power management control ECU CAN branch wire or connector Power management control ECU
U1133

Scheme 125

Scheme 125: WIRING DIAGRAM
Scheme 125: WIRING DIAGRAM
  1. The network gateway ECU will store this DTC when no signals can be received from the ECUs that have been memorized as those that are connected to sub bus 2.
  2. When the network gateway ECU receives a response signal from the ECUs connected to sub bus 2, the network gateway ECU recognizes and memorizes that the ECU is connected to sub bus 2. Based on this memorized data, the network gateway ECU monitors for malfunctions in the ECUs connected to sub bus 2 when communicating with those ECUs. If the network gateway ECU cannot receive response signals from the ECUs that have been memorized as those connected to sub bus 2, the network gateway ECU determines that a malfunction exists.
DTC CodeDTC Detection ConditionTrouble Area
U1002Network gateway ECU cannot receive signals from all ECUs that have been memorized as those connected to sub bus 2.Open or short in sub bus 2 main line or connector Open or short in sub bus 2 branch line or connector Network gateway ECU Absorber control ECU Power management control ECU Headlight swivel ECU assembly (AFS ECU) Clearance warning ECU assembly*1 Driving support ECU assembly*2 Seat belt control ECU*3 Blind spot monitor sensor LH*4 Blind spot monitor sensor RH*4 Open or short in No. 1 junction connector Open or short in No. 2 junction connector Open or short in No. 3 junction connector Open or short in No. 4 junction connector Open or short in No. 8 junction connector
  1. *1: w/ Intuitive Parking Assist System
  2. *2: w/ Dynamic Radar Cruise Control System
  3. *3: w/ Pre-collision System
  4. *4: w/ Blind Spot Monitor System

Scheme 126

Scheme 126: WIRING DIAGRAM
Scheme 126: WIRING DIAGRAM

Scheme 127

Scheme 127
Scheme 127
  1. The driving support ECU assembly will store this DTC when no signals can be received from the ECUs that have been memorized as those that are connected to sub bus 13.
  2. When the driving support ECU assembly receives a response signal from the ECUs connected to sub bus 13, the driving support ECU assembly recognizes and memorizes that the ECU is connected to sub bus 13. Based on this memorized data, the driving support ECU assembly monitors for malfunctions in the ECUs connected to sub bus 13 when communicating with those ECUs. If the driving support ECU assembly cannot receive response signals from the ECUs that have been memorized as those connected to sub bus 13, the driving support ECU assembly determines that a malfunction exists.
DTC CodeDTC Detection ConditionTrouble Area
U1002Driving support ECU assembly cannot receive signals from all ECUs that have been memorized as those connected to sub bus 13.Open or short in sub bus 13 main line or connector Open or short in sub bus 13 branch line or connector Millimeter wave radar sensor assembly Driving support ECU assembly Driver monitor ECU assembly*1 Lane recognition camera sensor assembly*2 No. 1 night view ECU*3 Open or short in No. 4 junction connector Open or short in No. 7 junction connector Open or short in No. 10 junction connector
  1. *1: w/ Pre-collision System
  2. *2: w/ Lane-keeping Assist System
  3. *3: w/ Night View System
  4. For vehicles with a dynamic radar cruise control system.

Scheme 128

Scheme 128: WIRING DIAGRAM
Scheme 128: WIRING DIAGRAM

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