Lexus ES manuals

Lexus ES: Lost Communication with ECM/PCM "A" Missing Message (U010087,U012587,U012687,U012987,U014087)

Lexus ES (XZ10) Service Manual / Engine & Hybrid System / Cruise Control / Front Camera System (for Gasoline Model) / Lost Communication with ECM/PCM "A" Missing Message (U010087,U012587,U012687,U012987,U014087)

DESCRIPTION

When a malfunction is detected between various ECUs and sensors, these DTCs are stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

U010087

Lost Communication with ECM/PCM "A" Missing Message

While the vehicle is being driven at 1 km/h or 1 mph or more, a communication error between the ECM and the forward recognition camera is detected for approximately 5 seconds or more.

CAN communication system

U012587

Lost Communication with Multi-axis Acceleration Sensor Module Missing Message

3 seconds after the engine switch is turned on (IG), while the vehicle is being driven at 1 km/h or 1 mph or more, a communication error between the yaw rate sensor (airbag ECU assembly) and the forward recognition camera is detected for approximately 5 seconds or more.

CAN communication system

U012687

Lost Communication with Steering Angle Sensor Module Missing Message

3 seconds after the engine switch is turned on (IG), a communication error between the steering sensor and the forward recognition camera is detected for approximately 5 seconds or more.

CAN communication system

U012987

Lost Communication with Brake System Control Module Missing Message

3 seconds after the engine switch is turned on (IG), a communication error between the skid control ECU (brake actuator assembly) and the forward recognition camera is detected for approximately 5 seconds or more.

CAN communication system

U014087

Lost Communication with Body Control Module Missing Message

3 seconds after the engine switch is turned on (IG), a communication error between the main body ECU (multiplex network body ECU) and the forward recognition camera is detected for approximately 5 seconds or more.

CAN communication system

PROCEDURE

1.

CHECK FOR DTCs

(a) Clear the DTCs.

Chassis > Front Recognition Camera > Clear DTCs

(b) Make sure that the DTC detection conditions are met.

HINT:

If the detection conditions are not met, the system cannot detect the malfunction.

(c) Check for DTCs.

Chassis > Front Recognition Camera > Trouble Codes

Result

Proceed to

DTC U010087, U012587, U012687, U012987 and U014087 are not output

A

DTC U010087, U012587, U012687, U012987 or U014087 is output

B

A

USE SIMULATION METHOD TO CHECK

B

GO TO CAN COMMUNICATION SYSTEM

READ NEXT:

 Internal Control Module Software Incompatibility Not Programmed (U030051)

DESCRIPTION The forward recognition camera receives vehicle information from the ECM via CAN communication. DTC U030051 is stored when the vehicle information from the ECM cannot be confirmed. DTC

 Internal Control Module Software Incompatibility Invalid / Incompatible Software Component (U030057)

DESCRIPTION Forward recognition camera receives the vehicle information from the ECM via CAN communication. DTC U030057 is stored when the vehicle information from the ECM and that stored in the forwa

 Software Incompatibility with Body Control Module Not Programmed (U032251)

DESCRIPTION The forward recognition camera receives vehicle information from the main body ECU (multiplex network body ECU) via CAN communication. DTC U032251 is stored when the forward recognition ca

SEE MORE:

 Dtc Check / Clear

DTC CHECK / CLEAR CHECK FOR DTC (MAIN BODY) (a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / Main Body / Trouble Codes. Body Electrical > Main Body > Trouble Codes (e) Check for DTCs. CHECK

 Parts Location

PARTS LOCATION ILLUSTRATION *1 TIRE PRESSURE WARNING ECU AND RECEIVER *2 TIRE PRESSURE WARNING VALVE AND TRANSMITTER ILLUSTRATION *1 STEERING PAD SWITCH ASSEMBLY *2 COMBINATION METER ASSEMBLY - TIRE PRESSURE WARNING LIGHT - MULTI-INFORMATION DISPLAY *3 MAIN BODY ECU (MUL

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