Toyota 4Runner: Terminals Of Ecu

Toyota 4Runner Service Manual / Vehicle Exterior / Sliding Roof / Convertible / Sliding Roof System / Terminals Of Ecu

TERMINALS OF ECU

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

(a) Disconnect the S10 sliding roof drive gear sub-assembly 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.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
S10-8 (B) - S10-12 (E)	W - W-B	Battery power supply	Always	11 to 14 V
S10-1 (IG) - S10-12 (E)	L - W-B	IG power supply	Ignition switch off	Below 1 V
S10-1 (IG) - S10-12 (E)	L - W-B	IG power supply	Ignition switch ON	11 to 14 V
S10-12 (E) - 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.

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

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
S10-7 (OPN) - S10-12 (E)	LG - W-B	Sliding roof motor open	Ignition switch ON, sliding roof closed Slide open switch off	11 to 14 V
S10-7 (OPN) - S10-12 (E)	LG - W-B	Sliding roof motor open	Ignition switch ON, sliding roof closed Slide open switch on	Below 1 V
S10-5 (CLS) - S10-12 (E)	B - W-B	Sliding roof motor close	Ignition switch ON, sliding roof open Slide close switch off	11 to 14 V
S10-5 (CLS) - S10-12 (E)	B - W-B	Sliding roof motor close	Ignition switch ON, sliding roof open Slide close switch on	Below 1 V
S10-4 (UP) - S10-12 (E)	R - W-B	Sliding roof motor up	Ignition switch ON, sliding roof tilted downward Tilt up switch off	11 to 14 V
S10-4 (UP) - S10-12 (E)	R - W-B	Sliding roof motor up	Ignition switch ON, sliding roof tilted downward Tilt up switch on	Below 1 V
S10-6 (DWN) - S10-12 (E)	P - W-B	Sliding roof motor down	Ignition switch ON, sliding roof tilted upward Tilt down switch off	11 to 14 V
S10-6 (DWN) - S10-12 (E)	P - W-B	Sliding roof motor down	Ignition switch ON, sliding roof tilted upward Tilt down switch on	Below 1 V

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

2. CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY, MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

(a) Remove the main body ECU (multiplex network body ECU) from the driver side junction block assembly (See page ).

(b) 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
A-30 (BECU) - Body ground	-	Battery power supply	Ignition switch off	11 to 14 V
A-31 (ALTB) - Body ground	-	Battery power supply	Ignition switch off	11 to 14 V
A-32 (IG) - Body ground	-	Ignition switch power supply	Ignition switch ON	11 to 14 V
A-32 (IG) - Body ground	-	Ignition switch power supply	Ignition switch off	Below 1 V
A-29 (ACC) - Body ground	-	ACC power supply	Ignition switch ACC	11 to 14 V
A-29 (ACC) - Body ground	-	ACC power supply	Ignition switch off	Below 1 V
A-11 (GND1) - Body ground	-	Ground	Always	Below 1 Ω
F10-3 (GND2) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
F9-17 (KSW)* - Body ground	B - Body ground	Unlock warning switch input	No key in ignition key cylinder	10 kΩ or higher
F9-17 (KSW)* - Body ground	B - Body ground	Unlock warning switch input	Key in ignition key cylinder	Below 1 Ω

*: w/o Smart Key System

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.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
2F-27 (FLCY) - Body ground	R - Body ground	Front door courtesy switch LH input	Front door LH open	Below 1 V
2F-27 (FLCY) - Body ground	R - Body ground	Front door courtesy switch LH input	Front door LH closed	11 to 14 V
2B-15 (FRCY) - Body ground	B - Body ground	Front door courtesy switch RH input	Front door RH open	Below 1 V
2B-15 (FRCY) - Body ground	B - Body ground	Front door courtesy switch RH input	Front door RH closed	11 to 14 V
F9-11 (L2) - Body ground	LG - Body ground	Driver side door key-linked lock input	Driver side door key cylinder turned to lock	Below 1 V
F9-11 (L2) - Body ground	LG - Body ground	Driver side door key-linked lock input	Driver side door key cylinder off	11 to 14 V
F9-24 (UL3) - Body ground	GR - Body ground	Driver side door key-linked unlock input	Driver side door key cylinder turned to unlock	Below 1 V
F9-24 (UL3) - Body ground	GR - Body ground	Driver side door key-linked unlock input	Driver side door key cylinder off	11 to 14 V
F9-26 (RDA)* - Body ground	P - Body ground	Door control receiver input	No key in ignition key cylinder, all doors closed and transmitter switch off → on	Pulse generation

*: w/o Smart Key System

If the result is not as specified, the main body ECU (multiplex network body ECU) or driver side junction block assembly may have a malfunction.

3. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (w/ Smart Key System)

(a) Disconnect the F79 certification ECU (smart key ECU assembly) 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.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
F79-1 (+B) - F79-15 (E)	V - W-B	Battery power supply	Always	11 to 14 V
F79-17 (CUTB) - F79-15 (E)	L - W-B	Battery power supply	Always	11 to 14 V
F79-16 (IG) - F79-15 (E)	W - W-B	Ignition power supply	Ignition switch off → ON	Below 1 V → 11 to 14 V
F79-15 (E) - 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.

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

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
F78-5 (RCO) - F79-15 (E)	L - W-B	Door control receiver power source	Ignition switch off, all doors closed and transmitter switch not pressed → pressed	Below 1 V → 4.5 to 5.5 V
F78-15 (RDA) - F79-15 (E)	G - W-B	Door control receiver data input signal	Ignition switch off	11 to 14 V pulse generation at regular intervals
F78-16 (RSSI) - F79-15 (E)	P - W-B	Door control receiver electric wave existence signal	All doors locked, all doors closed and transmitter switch not pressed → pressed	11 to 14 V → Below 2 V

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

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