Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000VJHE
Model Year Start: 2016 Model: Sienna Prod Date Range: [12/2015 -           ]
Title: DOOR LOCK: WIRELESS DOOR LOCK CONTROL SYSTEM(w/o Smart Key System): TERMINALS OF ECU; 2016 - 2020 MY Sienna [12/2015 -        ]

TERMINALS OF ECU

1. CHECK MAIN BODY ECU AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

(a) Remove the main body ECU.

(b) Disconnect the main body ECU connectors.

(c) Measure the voltage and resistance according to the value(s) in the table below.

HINT:

Measure the values on the wire harness side with the connector disconnected.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

2I-29 (ACC) - Body ground

-

Ignition power supply (ACC signal)

Ignition switch ACC → off

11 to 14 V → Below 1 V

2I-32 (IG) - Body ground

-

Ignition power supply (IG signal)

Ignition switch ON → off

11 to 14 V → Below 1 V

2I-30 (BECU) - Body ground

-

+B power supply

Always

11 to 14 V

2I-31 (ALTB) - Body ground

-

+B (power system alternator system) power supply

Always

11 to 14 V

D13-17 (KSW) - Body ground

R - Body ground

Unlock warning switch input

No key in ignition key cylinder (OFF) → Key inserted (ON)

10 kΩ or higher → Below 1 Ω

2I-11 (GND1) - Body ground

-

Ground

Always

Below 1 Ω

If the result is not as specified, there may be a malfunction on the wire harness side.

(d) Reconnect the main body ECU connectors.

(e) Measure the voltage according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

2H-34 (FLCY) - Body ground

P - Body ground

Driver side door courtesy light switch input

Driver side door CLOSED (OFF) → OPEN (ON)

Pulse generation → Below 1 V

2H-36 (FRCY) - Body ground

GR - Body ground

Passenger side courtesy light switch input

Passenger side door CLOSED (OFF) → OPEN (ON)

Pulse generation → Below 1 V

D13-6 (RCTY) - Body ground

L - Body ground

Rear courtesy light switch RH input

Rear door RH CLOSED (OFF) → OPEN (ON)

Pulse generation → Below 1 V

D12-3 (LCTY) - Body ground

GR - Body ground

Rear courtesy light switch LH input

Rear door LH CLOSED (OFF) → OPEN (ON)

Pulse generation → Below 1 V

D13-19 (BCTY) - Body ground

GR - Body ground

Back door courtesy light switch input

Back door CLOSED (OFF) → OPEN (ON)

Pulse generation → Below 1 V

D13-25 (PRG) - Body ground

GR - Body ground

Door control receiver output

Key inserted in ignition key cylinder → Key pulled out of ignition key cylinder

11 to 14 V → Pulse generation → 11 to 14 V

D13-26 (RDA) - Body ground

P - Body ground

Door control receiver input

Ignition switch off, all doors closed and transmitter switch not pressed

11 to 14 V

Ignition switch off, all doors closed and transmitter switch pressed

Pulse generation

2F-16 (HORN) - Body ground

LG - Body ground

Vehicle horn signal

Vehicle horn is sounding (Panic alarm system is in alarm sounding state)

Below 1 V ← → 12 V

2F-20 (BZR) - Body ground

G - Body ground

Wireless door lock buzzer signal

Wireless door lock buzzer OFF → ON

Below 1 V → Pulse generation

If the result is not as specified, the main body ECU may have a malfunction.