Toyota Venza: Terminals Of Ecu

Toyota Venza Service Manual / Sliding Roof / Convertible / Sliding Roof System / Terminals Of Ecu

TERMINALS OF ECU

1. CHECK SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY)

(a) Disconnect the P4 ECU connector.

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

HINT:

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

Tester Connection	Wiring Color	Terminal Description	Condition	Specified Condition
P4-1 (B) - P4-2 (E)	R - W-B	Battery power supply	Always	11 to 14 V
P4-5 (IG) - P4-2 (E)	L - W-B	Ignition switch power supply	Ignition switch off	Below 1 V
P4-5 (IG) - P4-2 (E)	L - W-B	Ignition switch power supply	Ignition switch ON	11 to 14 V
P4-2 (E) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω

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

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

Tester Connection	Wiring Color	Terminal Description	Condition	Specified Condition
P4-7 (OPN) - P4-2 (E)	GR - W-B	Sliding roof motor open	Ignition switch ON, SLIDE OPEN switch on	Below 1 V
P4-7 (OPN) - P4-2 (E)	GR - W-B	Sliding roof motor open	Ignition switch ON, SLIDE OPEN switch off	11 to 14 V
P4-9 (CLS) - P4-2 (E)	BR - W-B	Sliding roof motor close	Ignition switch ON, SLIDE CLOSE switch on	Below 1 V
P4-9 (CLS) - P4-2 (E)	BR - W-B	Sliding roof motor close	Ignition switch ON, SLIDE CLOSE switch off	11 to 14 V
P4-10 (UP) - P4-2 (E)	LG - W-B	Sliding roof motor up	Ignition switch ON, TILT UP switch on	Below 1 V
P4-10 (UP) - P4-2 (E)	LG - W-B	Sliding roof motor up	Ignition switch ON, TILT UP switch off	11 to 14 V
P4-8 (DWN) - P4-2 (E)	R - W-B	Sliding roof motor down	Ignition switch ON, TILT DOWN switch on	Below 1 V
P4-8 (DWN) - P4-2 (E)	R - W-B	Sliding roof motor down	Ignition switch ON, TILT DOWN switch off	11 to 14 V

If the result is not as specified, the sliding roof ECU (sliding roof drive gear sub-assembly) may have a malfunction.

Diagnosis System

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