Terminals Of Ecu

WARNING: This page is about a different car, the 2007 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

CHECK TIRE PRESSURE WARNING ECU

Fig 1: Identifying Tire Pressure Warning ECU Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Disconnect the E56 ECU connector.

Measure the voltage and resistance of the wire harness side connector.

VOLTAGE CHECK CHART

Symbols (Terminal No.)	Wiring Color	Terminal Description	Condition	Specified Condition
IG (E56-2) - GND (E56- 11)	L - W-B	IG power source	Ignition switch ON	10 to 14 V
IG (E56-2) - GND (E56- 11)	L - W-B	IG power source	Ignition switch OFF	Below 1 V
GND (E56-11) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω

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

Reconnect the E56 ECU connector.

Measure the voltage of the connector.

VOLTAGE CHART

Symbols (Terminal No.)	Wiring Color	Terminal Description	Condition	Specified Condition
SPD (E56-3) - GND (E56- 11)	V - W-B	Vehicle speed signal	Vehicle is running	Pulse generation
SIL (E56-4) - GND (E56- 11)	W - W-B	Diagnosis tester communication line	Ignition switch ON, when communication is not performed with a tester	8 to 15 V
IND (E56-6) - GND (E56- 11)	P - W-B	Tire pressure warning light output signal	Ignition switch ON, tire pressure warning light ON	Below 1 V
RDA (E56-7) - GND (E56- 11)	G - W-B	Tire pressure monitor receiver signal	Ignition switch ON, tire pressure monitor receiver is not connected	9 to 16 V
RFSV (E56-8) - GND (E56-11)	R - W-B	Tire pressure monitor receiver power source	Ignition switch ON	4.5 to 5.5 V
TC (E56-12) - GND (E56- 11)	G - W-B	TC terminal	When terminal TC is not connected	8 to 15 V
GND2 (E56-16) - Body ground	Y - Body ground	Tire pressure monitor receiver ground	Always	Below 1 V

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