Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000VITV
Model Year Start: 2016 Model: Sienna Prod Date Range: [12/2015 -           ]
Title: TIRE PRESSURE MONITORING: TIRE PRESSURE WARNING SYSTEM: TC and CG Terminal Circuit; 2016 - 2020 MY Sienna [12/2015 -        ]

TC and CG Terminal Circuit

DESCRIPTION

DTC output mode is set by connecting terminals TC and CG of the DLC3. The DTCs are indicated by the blinking of the tire pressure warning light.

WIRING DIAGRAM

HINT:

When each warning light continues blinking, a ground short in the wiring of terminal TC of the DLC3 or an internal ground short in each ECU is suspected.

CAUTION / NOTICE / HINT

NOTICE:

  • When replacing the tire pressure warning ECU, read the transmitter IDs stored in the old ECU using the Techstream and write them down before removal.
  • It is necessary to perform initialization (See page 2016 - 2020 MY Sienna [12/2015 -        ]; TIRE PRESSURE MONITORING: TIRE PRESSURE WARNING SYSTEM: INITIALIZATION ) after registration (See page 2016 - 2020 MY Sienna [12/2015 -        ]; TIRE PRESSURE MONITORING: TIRE PRESSURE WARNING SYSTEM: REGISTRATION ) of the transmitter IDs into the tire pressure warning ECU after the ECU and/or tire pressure warning valve and transmitter has been replaced.

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (DLC3 - ECU AND BODY GROUND)

(a) Disconnect the D82 ECU connector.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

D82-3 (TC) - D16-13 (TC)

Always

Below 1 Ω

D82-3 (TC) - Body ground

Always

10 kΩ or higher

D16-4 (CG) - Body ground

Always

Below 1 Ω

OK

CHECK ECU POWER SOURCE CIRCUIT

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR