Toyota Venza manuals

Toyota Venza: Diagnosis System

DIAGNOSIS SYSTEM

1. ECUS OR SENSORS WHICH COMMUNICATE THROUGH CAN COMMUNICATION SYSTEM

(a) CAN No. 1 Bus

(1) ECM

(2) Main body ECU (Driver side junction block)

(3) Combination meter

(4) Power steering ECU

(5) Air conditioning amplifier*3

(6) Center airbag sensor assembly

(7) Skid control ECU (Brake actuator)

(8) Steering angle sensor

(9) Yaw rate sensor

(10) 4WD control ECU*1

(11) Certification ECU*2

(12) Power management control ECU*2

(13) Navigation receiver assembly*8

(14) Radio and display receiver assembly*9

(b) CAN No. 2 Bus

(1) AFS ECU*4

(2) Clearance warning ECU assembly*10

(c) CAN MS Bus

(1) Back door motor unit (Power back door ECU)*5

(2) Back door closer ECU*6

(3) Outer mirror control ECU assembly (for Driver side)*7

(4) Outer mirror control ECU assembly (for Front passenger side)*7

(5) Position control ECU and switch assembly*7

(d) Power Management Bus*2

(1) Air conditioning amplifier*2

HINT:

*1: for AWD

*2: w/ Smart key system

*3: w/o Smart key system

*4: w/ HID headlight

*5: w/ Power back door system

*6: w/ Back door closer system (w/o Power back door system)

*7: w/ Seat position memory system

*8: for Navigation system

*9: for Audio and visual system

*10: w/ Intuitive parking assist system

2. CHECK FOR INSTALLED SYSTEMS (ECUS AND SENSORS) THAT ADOPT CAN COMMUNICATION

(a) The systems (ECUs and sensors) that adopt CAN communication vary depending on the vehicle and optional equipment. Check which systems (ECUs and sensors) are installed on the vehicle.

ECU/Sensor Name

Techstream Display

Check Method

ECM

  • Engine
  • ECT

Installed on all vehicles

Main body ECU

Main Body

Installed on all vehicles

Combination meter

Combination Meter

Installed on all vehicles

Power steering ECU

EPS

Installed on all vehicles

Air conditioning amplifier

Air Conditioner

Installed on all vehicles

Center airbag sensor assembly

SRS Airbag

Installed on all vehicles

Skid control ECU

ABS/VSC/TRAC

Installed on all vehicles

Steering angle sensor

Steering Angle Sensor

Installed on all vehicles

Yaw rate sensor

Yaw Rate / Deceleration Sensor

Installed on all vehicles

4WD control ECU

Four Wheel Drive Control

AWD vehicles

Certification ECU

Smart Access/Smart Key/Wireless Tuner

w/ Smart key system

Power management control ECU

  • Electric Power Control
  • Power Management1
  • Power Management2

w/ Smart key system

Power back door ECU

Power Back Door

w/ Power back door system

Back door closer ECU

Power Back Door

w/ Back door closer system (w/o Power back door system)

AFS ECU

AFS/HL AutoLeveling

w/ HID headlight

Navigation receiver assembly

Display and Navigation (AVN1)

for Navigation system

Radio and display receiver assembly

Display and Navigation (AVN1)

for Audio and visual system

Outer mirror control ECU assembly (for Driver side)

Front Door LH / L-Mirror

(FL-Door 2 / L-Miror)

w/ Seat position memory system

Outer mirror control ECU assembly (for Front passenger side)

Front Door RH / R-Mirror

(FR-Door 2 / R-Miror)

w/ Seat position memory system

Position control ECU and switch assembly

D-Seat

w/ Seat position memory system

Clearance warning ECU assembly

Clearance Warning

(Intuitive Parking Assist)

w/ Intuitive parking assist system

3. CAN BUS CHECK

HINT:

The ECUs and sensors that are properly connected to the CAN communication system can be displayed using the Techstream.

(a) Using the Techstream, select "CAN Bus Check" from "System Select".

4. DTC TABLE BY ECU

HINT:

  • In the CAN communication system, CAN communication system DTCs can be displayed by the ECU using the Techstream.
  • If CAN communication system DTCs are output, trouble cannot be determined only by the DTCs. Perform troubleshooting according to How to Proceed with Troubleshooting (See page ).

(a) ECM / Techstream Display "Engine"

DTC Code

Detection Item

U0101*1

Lost Communication with TCM

HINT:

  • DTC communication uses the CAN communication system.
  • *1: The ECM is malfunctioning if only U0101 is output. Refer to SFI System (1AR-FE: See page , 2GR-FE: See
    page ).

(b) TCM / Techstream Display "ECT"

DTC Code

Detection Item

U0100*2

Lost Communication with ECM / PCM "A"

HINT:

  • DTC communication uses the CAN communication system.
  • *2: The ECM is malfunctioning if only U0100 is output. Refer to Automatic Transaxle System (U760E: See page , U760F:
    See page , U660E: See page
    , U660F: See page
    ).

(c) Main Body ECU (Driver Side Junction Block) / Techstream Display "Main Body"

DTC Code

Detection Item

U0100

Lost Communication with ECM/ PCM "A"

U0101

Lost Communication with TCM

U0151

Lost Communication with Restraints Control Module

U0155

Lost Communication with Instrument Panel Cluster

U0164

Lost Communication with HVAC Control Module

U0182

Lost Communication with AFS

U0199

Lost Communication with "Door Control Module A"

U0200

Lost Communication with "Door Control Module B"

U0208

Lost Communication with "Seat Control Module A"

U0230

Lost Communication with Rear Gate Module

U0327

Software Incompatibility with Vehicle Security

U1002

Lost Communication with Gateway Module (Main body ECU)

U1110

Lost Communication with Clearance Warning ECU

U1133

Lost Communication with PMN Module

HINT:

DTC communication uses the CAN communication system.

(d) Power Steering ECU / Techstream Display "EMPS"

DTC Code

Detection Item

U0100

Lost Communication with ECM / PCM "A"

U0129

Lost Communication with Brake System Control Module

HINT:

DTC communication uses the CAN communication system.

(e) Air Conditioning Amplifier / Techstream Display "Air Conditioner"

DTC Code

Detection Item

U0100

Lost Communication with ECM

U0131

Lost Communication with Electric Power Steering ECU

U0142

Lost Communication with Main body ECU

U0155

Lost Communication with Meter

HINT:

DTC communication uses the CAN communication system.

(f) Combination Meter / Techstream Display "Combination Meter"

DTC Code

Detection Item

U0100

Lost Communication with ECM / PCM "A"

U0129

Lost Communication with Brake System Control Module

HINT:

DTC communication uses the CAN communication system.

(g) Center Airbag Sensor Assembly / Techstream Display "SRS Airbag"

HINT:

The center airbag sensor assembly is connected to the CAN communication system, but CAN communication DTCs are not output.

(h) Skid Control ECU (Brake Actuator) / Techstream Display "ABS/VSC/TRAC"

DTC Code

Detection Item

U0073

Control Module Communication Bus OFF

U0100

Lost Communication with ECM / PCM

U0123

Lost Communication with Yaw Rate Sensor Module

U0124

Lost Communication with Lateral Acceleration Sensor Module

U0126

Lost Communication with Steering Angle Sensor Module

HINT:

DTC communication uses the CAN communication system.

(i) Steering Angle Sensor / Techstream Display "Steering Angle Sensor"

HINT:

The steering angle sensor is connected to the CAN communication system, but CAN communication DTCs are not output.

(j) Yaw Rate Sensor / Techstream Display "Yaw Rate / Deceleration Sensor"

HINT:

The yaw rate and acceleration sensor is connected to the CAN communication system, but CAN communication DTCs are not output.

(k) 4WD Control ECU / Techstream Display "Four Wheel Drive Control"

DTC Code

Detection Item

U0073

Control Module Communication Bus OFF

U0100

Lost Communication with ECM / PCM

U0123

Lost Communication with Yaw Rate Sensor Module

U0124

Lost Communication with Lateral Acceleration Sensor Module

U0126

Lost Communication with Steering Angle Sensor Module

U0129

Lost Communication with Brake System Control Module

HINT:

DTC communication uses the CAN communication system.

(l) Certification ECU / Techstream Display "Smart Access/Smart Key/Wireless Tuner"

DTC Code

Detection Item

U0100

Lost Communication with ECM / PCM "A"

U0142

Lost Communication with Body Control Module "B"

U0155

Lost Communication with Instrument Panel Cluster (IPC) Control Module

HINT:

DTC communication uses the CAN communication system.

(m) Power Management Control ECU / Techstream Display "Electric Power Control"

DTC Code

Detection Item

U0100

Lost Communication with ECM / PCM

HINT:

  • DTC communication uses the CAN communication system.
  • "Electric Power Control" output DTC is communication error in CAN No. 1 bus.

(n) Power Management Control ECU / Techstream Display "PM1 Gateway"

DTC Code

Detection Item

U0182

Lost Communication with AFS ECU

U1002

Lost Communication with Gateway Module

U1110

Lost Communication with Clearance Warning ECU

HINT:

  • DTC communication uses the CAN communication system.
  • "PM1 Gateway" output DTC is communication error in CAN No. 2 bus.

(o) Power Management Control ECU / Techstream Display "PM2 Gateway"

DTC Code

Detection Item

U0100

Lost Communication with ECM / PCM

U0164

Lost Communication with HVAC Control Module

U1002

Lost Communication with Gateway Module

HINT:

  • DTC communication uses the CAN communication system.
  • "PM2 Gateway" output DTC is communication error in power management bus.

(p) Power Back Door ECU (Back Door Motor Unit) / Techstream Display "Power Back Door"

HINT:

The back door motor unit (power back door ECU) is connected to the CAN communication system, but CAN communication DTCs are not output.

(q) Back Door Closer ECU / Techstream Display "Power Back Door"

HINT:

The back door closer ECU is connected to the CAN communication system, but CAN communication DTCs are not output.

(r) AFS ECU / Techstream Display "AFS/HL AutoLeveling"

HINT:

The AFS ECU is connected to the CAN communication system, but CAN communication DTCs are not output.

(s) Navigation Receiver Assembly / Techstream Display "Navigation System"

DTC Code

Detection Item

U0073

Sending Malfunction (Navigation to APGS)

U0100

Lost Communication with ECM

U0129

Lost Communication with Brake System Control Module

U0140

Lost Communication with Body Control Module

U0155

Meter ECU Communication

HINT:

  • DTC communication uses the CAN communication system.
  • "Navigation System" output DTC is communication error in CAN No. 1 bus.

(t) Radio and Display Receiver Assembly / Techstream Display "Navigation System"

DTC Code

Detection Item

U0073

Sending Malfunction (Navigation to APGS)

U0100

Lost Communication with ECM

U0129

Lost Communication with Brake System Control Module

U0140

Lost Communication with Body Control Module

U0155

Meter ECU Communication

HINT:

  • DTC communication uses the CAN communication system.
  • "Navigation System" output DTC is communication error in CAN No. 1 bus.

(u) Outer Mirror Control ECU Assembly (for Driver Side) / Techstream Display "Mirror L"

DTC Code

Detection Item

U0142

Lost Communication with Body Control Module "B"

HINT:

  • DTC communication uses the CAN communication system.
  • "Mirror L" output DTC is communication error in CAN MS bus.

(v) Outer Mirror Control ECU Assembly (for Front Passenger Side) / Techstream Display "Mirror R"

DTC Code

Detection Item

U0142

Lost Communication with Body Control Module "B"

HINT:

  • DTC communication uses the CAN communication system.
  • "Mirror R" output DTC is communication error in CAN MS bus.

(w) Position Control ECU and Switch Assembly / Techstream Display "Driver Seat"

HINT:

The position control ECU and switch assembly is connected to the CAN communication system, but CAN communication DTCs are not output.

(x) Clearance Warning ECU Assembly / Techstream Display "Intuitive Parking Assist"

DTC Code

Detection Item

U0100

Lost Communication with ECM / PCM "A"

U0101

Lost Communication with TCM

U0142

Lost Communication with Body Control Module "B"

U0155

Lost Communication with Instrument Panel Cluster Control Module (Combination Meter)

HINT:

  • DTC communication uses the CAN communication system.
  • "Intuitive Parking Assist" output DTC is communication error in CAN No. 2 bus.

5. DTC COMBINATION TABLE

(a) CAN No. 1 Bus

DTC

Trouble Mode

Output ECU

Output DTC

Main Body ECU Communication Stop Mode

Combination Meter ECU Communication Stop Mode

Air Conditioning Amplifier Communication Stop Mode

Combination meter

U0100

X

○*1

X

U0129

X

○*1

X

Air conditioning amplifier

U0100

X

X

○*3

U0131

X

X

○*3

U0142

X

○*3

U0155

X

○*3

Skid control ECU

U0073

X

X

X

U0100

X

X

X

U0123

X

X

X

U0124

X

X

X

U0126

X

X

X

Power steering ECU

U0100

X

X

X

U0129

X

X

X

4WD control ECU

U0073

X

X

X

U0100

X

X

X

U0123

X

X

X

U0124

X

X

X

U0126

X

X

X

U0129

X

X

X

Power management control ECU

U0100

X

X

X

Main body ECU

U0100

X

X

X

U0101

X

X

X

U0151

X

X

X

U0155

X

X

U0164

X

X

U0327

X

X

X

U1133

X

X

X

Certification ECU

U0100

X

X

X

U0142

X

X

U0155

X

X

Navigation receiver assembly

U0073

X

X

X

U0100

X

X

X

U0129

X

X

X

U0140

X

X

U0155

X

X

Radio and display receiver assembly

U0073

X

X

X

U0100

X

X

X

U0129

X

X

X

U0140

X

X

U0155

X

X

DTC

Trouble Mode

Output ECU

Output DTC

Center Airbag Sensor Communication Stop Mode

ECM Communication Stop Mode

4WD Control ECU Communication Stop Mode

Combination meter

U0100

X

X

U0129

X

X

X

Air conditioning amplifier

U0100

X

X

U0131

X

X

X

U0142

X

X

X

U0155

X

X

X

Skid control ECU

U0073

X

X

X

U0100

X

X

U0123

X

X

X

U0124

X

X

X

U0126

X

X

X

Power steering ECU

U0100

X

X

U0129

X

X

X

4WD control ECU

U0073

X

X

○*1

U0100

X

○*1

U0123

X

X

○*1

U0124

X

X

○*1

U0126

X

X

○*1

U0129

X

X

○*1

Power management control ECU

U0100

X

X

Main body ECU

U0100

X

X

U0101

X

X

U0151

X

X

U0155

X

X

X

U0164

X

X

X

U0327

X

X

X

U1133

X

X

X

Certification ECU

U0100

X

X

U0142

X

X

X

U0155

X

X

X

Navigation receiver assembly

U0073

X

X

X

U0100

X

X

U0129

X

X

X

U0140

X

X

X

U0155

X

X

X

Radio and display receiver assembly

U0073

X

X

X

U0100

X

X

U0129

X

X

X

U0140

X

X

X

U0155

X

X

X

DTC

Trouble Mode

Output ECU

Output DTC

Skid Control ECU Communication Stop Mode

Yaw Rate Sensor Communication Stop Mode

Steering Angle Sensor Communication Stop Mode

Power Steering ECU Communication Stop Mode

Combination meter

U0100

X

X

X

X

U0129

X

X

X

Air conditioning amplifier

U0100

X

X

X

X

U0131

X

X

X

U0142

X

X

X

X

U0155

X

X

X

X

Skid control ECU

U0073

○*1, 4

X

X

X

U0100

○*1

X

X

X

U0123

○*1

X

X

U0124

○*1

X

X

U0126

○*1

X

X

Power steering ECU

U0100

X

X

X

○*1

U0129

X

X

○*1

4WD control ECU

U0073

X

X

X

X

U0100

X

X

X

X

U0123

X

X

X

U0124

X

X

X

U0126

X

X

X

U0129

X

X

X

Power management control ECU

U0100

X

X

X

X

Main body ECU

U0100

X

X

X

X

U0101

X

X

X

X

U0151

X

X

X

X

U0155

X

X

X

X

U0164

X

X

X

X

U0327

X

X

X

X

U1133

X

X

X

X

Certification ECU

U0100

X

X

X

X

U0142

X

X

X

X

U0155

X

X

X

X

Navigation receiver assembly

U0073

X

X

X

X

U0100

X

X

X

X

U0129

X

X

X

U0140

X

X

X

X

U0155

X

X

X

X

Radio and display receiver assembly

U0073

X

X

X

X

U0100

X

X

X

X

U0129

X

X

X

U0140

X

X

X

X

U0155

X

X

X

X

DTC

Trouble Mode

Output ECU

Output DTC

Certification ECU Communication Stop Mode

Power Management Control ECU Communication Stop Mode

Navigation Receiver Assembly Communication Stop Mode

Audio Receiver Assembly Communication Stop Mode

Combination meter

U0100

X

X

X

X

U0129

X

X

X

X

Air conditioning amplifier

U0100

X

X

X

X

U0131

X

X

X

X

U0142

X

X

X

X

U0155

X

X

X

X

Skid control ECU

U0073

X

X

X

X

U0100

X

X

X

X

U0123

X

X

X

X

U0124

X

X

X

X

U0126

X

X

X

X

Power steering ECU

U0100

X

X

X

X

U0129

X

X

X

X

4WD control ECU

U0073

X

X

X

X

U0100

X

X

X

X

U0123

X

X

X

X

U0124

X

X

X

X

U0126

X

X

X

X

U0129

X

X

X

X

Power management control ECU

U0100

X

○*1

X

X

Main body ECU

U0100

X

X

X

X

U0101

X

X

X

X

U0151

X

X

X

X

U0155

X

X

X

X

U0164

X

X

X

X

U0327

X

X

X

U1133

X

X

X

Certification ECU

U0100

X

X

X

X

U0142

X

X

X

X

U0155

X

X

X

X

Navigation receiver assembly

U0073

X

X

○*1

-

U0100

X

X

○*1

-

U0129

X

X

○*1

-

U0140

X

X

○*1

-

U0155

X

X

○*1

-

Radio and display receiver assembly

U0073

X

X

-

○*1

U0100

X

X

-

○*1

U0129

X

X

-

○*1

U0140

X

X

-

○*1

U0155

X

X

-

○*1

HINT:

  • ○: Set
  • X: Not set or may be set according to the malfunctioning part when one side of the CAN branch wire opens.
  • -: DTC is not output.
  • *1: DTC is not output during communication error, but will be output as a history DTC (past DTC) when communication returns to normal.
  • *2: DTC is stored only when both communications are simultaneously interrupted.
  • *3: DTC is not output during communication error.
  • *4: DTC U0100, U0123, U0124 or U0126 are not stored when DTC U0073 has already been stored.
  • Skid Control ECU Communication Stop Mode (See page )

  • Air Conditioning Amplifier Communication Stop Mode (See page )

  • Power Steering ECU Communication Stop Mode (See page )

  • Steering Angle Sensor Communication Stop Mode (See page )

  • Yaw Rate Sensor Communication Stop Mode (See page )

  • ECM Communication Stop Mode (See page )

  • Main Body ECU Communication Stop Mode (See page )

  • Combination Meter ECU Communication Stop Mode (See page )

  • Center Airbag Sensor Communication Stop Mode (See page )

  • 4WD Control ECU Communication Stop Mode (See page )

  • Certification ECU Communication Stop Mode (See page )

  • Power Management Control ECU Communication Stop Mode (See page )

  • Navigation Receiver Assembly Communication Stop Mode (See page )

  • Audio Receiver Assembly Communication Stop Mode (See page )

Terminals Of Ecu
TERMINALS OF ECU NOTICE: Turn the ignition switch off before measuring the resistances between CAN bus main wires and between CAN bus branch wires. Turn the ignition switch off befor ...

Fail-safe Chart
FAIL-SAFE CHART 1. FAIL-SAFE FUNCTION (a) When communication fails in any of the CAN bus wires (communication wires), a fail-safe function(s) will operate. The fail-safe function that is specified ...

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