Last Modified: 4-30-2014 6.6 U Doc ID: RM0000018GV000X
Model Year: 2006 Model: LX470 Prod Date Range: [05/2005 -           ]
Title: THEFT DETERRENT: THEFT DETERRENT SYSTEM: TERMINALS OF ECU; 2006 MY LX470 [05/2005 -        ]

TERMINALS OF ECU

1. CHECK THEFT WARNING ECU ASSEMBLY

(a) Measure the resistance and voltage of the connector.

Symbols (Terminal No.)

Wiring Color

Terminal Description

Condition

Specified Condition

E (T6-29) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

+B1 (T6-2) - Body ground

LG - Body ground

+B (ECU-B) power source

Always

10 to 14 V

+B2 (T6-3) - Body ground

L-W - Body ground

Power source supply

Always

10 to 14 V

IG (T6-10) - Body ground

B-W - Body ground

Ignition power supply

Ignition switch OFF

Below 1 V

Ignition switch ON

10 to 14 V

SH- (T6-1) - Body ground

W - Body ground

Security horn signal

Security horn is sounding (Theft deterrent system is in alarm sounding state)

Pulse generation

HORN (T6-5) - E (T6-29)

G-O - W-B

Both vehicle horn signal outputs (low pitched and high pitched)

Armed state

10 to 14 V

Alarm sounding state

Below 1 V

KSW (T6-12) - E (T6-29)

R-B - W-B

Unlock warning switch signal input

No key in ignition key cylinder

10 kΩ or higher

Key inserted in ignition key cylinder

Below 1 Ω

REV (T6-23) - E (T6-29)

B - W-B

Engine revolution signal input

Idling

Pulse generation

DSWH (T6-34) - E (T26-29)

L-B - W-B

Engine hood courtesy switch signal input

Engine hood fully closed

10 kΩ or higher

Engine hood open

Below 1 Ω

  • If the result is not specified, the ECU may have a malfunction.