Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000VJ8B
Model Year Start: 2016 Model: Sienna Prod Date Range: [12/2015 - 11/2017]
Title: PARK ASSIST / MONITORING: PARKING ASSIST MONITOR SYSTEM: C1611; ECU Malfunction; 2016 - 2017 MY Sienna [12/2015 - 11/2017]

DTC

C1611

ECU Malfunction

DESCRIPTION

This DTC is stored if the parking assist ECU judges that there is an internal malfunction as a result of its self check.

HINT:

The parking assist ECU stores different types of information during initialization. If the parking assist ECU cannot read the stored information when it is activated, the parking assist ECU judges that there is an internal malfunction and stores this DTC.

DTC Code

DTC Detection Condition

Trouble Area

C1611
  • EEPROM Status (Initial read)
  • AISIC Output Status
  • Parking assist ECU initialization (parking assist ECU not initialized)
  • Back camera position setting (initialized parking assist ECU)
  • Steering Angle setting (initialized parking assist ECU)
  • Parking assist ECU

CAUTION / NOTICE / HINT

NOTICE:

  • When "System is initializing" is displayed on the navigation receiver assembly after the battery terminal has been disconnected, correct the steering angle neutral point (See page 2016 - 2017 MY Sienna [12/2015 - 11/2017]; PARK ASSIST / MONITORING: PARKING ASSIST MONITOR SYSTEM: INITIALIZATION ).
  • Depending on the parts that are replaced or operations that are performed during vehicle inspection or maintenance, calibration of other systems as well as the parking assist monitor system may be needed (See page 2016 - 2017 MY Sienna [12/2015 - 11/2017]; PARK ASSIST / MONITORING: PARKING ASSIST MONITOR SYSTEM: CALIBRATION ).

PROCEDURE

1.

READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Chassis / Parking Assist Monitor System / Data List.

(e) Check the Data List for proper functioning of the following items.

Parking Assist Monitor System

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

EEPROM Status (Initial read)

Parking assist ECU information/OK or NG

OK: Parking assist ECU is normal

NG: Parking assist ECU is abnormal

-

AISIC Output Status

Output condition of camera display signal/OK or NG

OK: Output condition of camera display signal is normal

NG: Output condition of camera display signal is abnormal

-

Result

Result

Proceed to

OK is displayed for both items.

A

NG is displayed for EEPROM Status (Initial read).

A

NG is displayed for AISIC Output Status

B
B

REPLACE PARKING ASSIST ECU

A

2.

SETTINGS (PARKING ASSIST ECU INITIALIZATION)

HINT:

  • The parking assist ECU stores different types of information during initialization. If the parking assist ECU cannot read the stored information when it is activated, the parking assist ECU judges that there is an internal malfunction and stores this DTC.
  • If the parking assist ECU cannot read the stored information when it is activated, allowing the ECU to store the information again may return the system to normal.

(a) Use the transition of diagnosis screens (note which transition pattern occurs) to confirm if the parking assist ECU was able to properly store the information from initialization (See page 2016 - 2017 MY Sienna [12/2015 - 11/2017]; PARK ASSIST / MONITORING: PARKING ASSIST MONITOR SYSTEM: DIAGNOSIS SYSTEM ).

HINT:

The procedure to make the parking assist ECU store the vehicle information differs when the parking assist ECU has stored the information (initialized) and when the information has not been stored (not initialized).

(b) Perform the following procedure depending on the memory conditions to register the vehicle information into the parking assist ECU.

Condition

Procedure

Not initialized

Parking assist ECU initialization (See page 2016 - 2017 MY Sienna [12/2015 - 11/2017]; PARK ASSIST / MONITORING: PARKING ASSIST MONITOR SYSTEM: CALIBRATION )

Initialized
  • Back camera position setting (See page 2016 - 2017 MY Sienna [12/2015 - 11/2017]; PARK ASSIST / MONITORING: PARKING ASSIST MONITOR SYSTEM: CALIBRATION )
  • Steering angle setting (Diagnosis system) (See page 2016 - 2017 MY Sienna [12/2015 - 11/2017]; PARK ASSIST / MONITORING: PARKING ASSIST MONITOR SYSTEM: DIAGNOSIS SYSTEM )
NEXT

3.

CHECK DTC OUTPUT

(a) Clear the DTCs (See page 2016 - 2017 MY Sienna [12/2015 - 11/2017]; PARK ASSIST / MONITORING: PARKING ASSIST MONITOR SYSTEM: DTC CHECK / CLEAR ).

(b) Check for DTCs (See page 2016 - 2017 MY Sienna [12/2015 - 11/2017]; PARK ASSIST / MONITORING: PARKING ASSIST MONITOR SYSTEM: DTC CHECK / CLEAR ).

Result

Result

Proceed to

DTC C1611 is output

A

No DTC is output

B

HINT:

  • If DTC C1611 is output, perform the procedure to allow the parking assist ECU to store the vehicle information again.
  • If DTC C1611 is still output after performing the procedure to make the parking assist ECU store the vehicle information 3 times, replace the parking assist ECU.
  • If DTC C1611 is output frequently, replace the parking assist ECU even though the DTC is not output when rechecking for DTCs.
A

REPLACE PARKING ASSIST ECU

B

END