Terminals Of Ecu [11/2016 - ]

COMBINATION METER ASSEMBLY

Fig 1: Combination Meter Assembly Connector End Views (11/2016 - )

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the voltage and resistance and check for pulses according to the value(s) in the table below.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
F21-1 (B) - Body ground	G - Body ground	Battery	Always	11 to 14 V
F21-2 (RCMT) - Body ground*3	V - Body ground	Rear center No. 1 seat belt warning output signal	Ignition switch ON, rear seat belt warning light (rear No. 1 seat center) off	11 to 14 V
F21-2 (RCMT) - Body ground*3	V - Body ground	Rear center No. 1 seat belt warning output signal	Ignition switch ON, rear seat belt warning light (rear No. 1 seat center) on	Below 1 V
F21-3 (RRMT) - Body ground	G - Body ground	Rear right No. 1 seat belt warning output signal	Ignition switch ON, rear seat belt warning light (rear No. 1 seat RH) off	11 to 14 V
F21-3 (RRMT) - Body ground	G - Body ground	Rear right No. 1 seat belt warning output signal	Ignition switch ON, rear seat belt warning light (rear No. 1 seat RH) on	Below 1 V
F21-4 (CHG-) - Body ground*2	G - Body ground	Charge warning light signal	Engine running, charge warning light off2 or "Charge warning (Charge warning symbol)" not displayed1	11 to 14 V
F21-4 (CHG-) - Body ground*2	G - Body ground	Charge warning light signal	Engine running, charge warning light on2 or "Charge warning (Charge warning symbol)" displayed1	Below 1 V
F21-5 (HAZ) - Body ground	P - Body ground	Hazard warning signal switch signal	Ignition switch ON, hazard warning signal switch not pressed	11 to 14 V
F21-5 (HAZ) - Body ground	P - Body ground	Hazard warning signal switch signal	Ignition switch ON, hazard warning signal switch pressed	Below 1 V
F21-6 (RLMT) - Body ground	GR - Body ground	Rear left No. 1 seat belt warning output signal	Ignition switch ON, rear seat belt warning light (rear No. 1 seat LH) off	11 to 14 V
F21-6 (RLMT) - Body ground	GR - Body ground	Rear left No. 1 seat belt warning output signal	Ignition switch ON, rear seat belt warning light (rear No. 1 seat LH) on	Below 1 V
F21-7 (LL) - Body ground	L - Body ground	LH turn indicator light signal (Output)	Ignition switch ON, LH turn indicator light off	Below 1 V
F21-7 (LL) - Body ground	L - Body ground	LH turn indicator light signal (Output)	Ignition switch ON, LH turn indicator light blinking	11 to 14 V ←→ Below 1 V
F21-8 (SW) - Body ground	B - Body ground	Turn switch signal	Ignition switch ON, LH and RH turn signal switch off	11 to 14 V
F21-8 (SW) - Body ground	B - Body ground	Turn switch signal	Ignition switch ON, LH or RH turn signal switch on	Below 1 V
F21-9 (ER) - Body ground	V - Body ground	RH turn indicator light signal (Input)	Ignition switch ON, RH turn signal switch off	11 to 14 V
F21-9 (ER) - Body ground	V - Body ground	RH turn indicator light signal (Input)	Ignition switch ON, RH turn signal switch on	Below 1 V
F21-10 (EL) - Body ground	R - Body ground	LH turn indicator light signal (Input)	Ignition switch ON, LH turn signal switch off	11 to 14 V
F21-10 (EL) - Body ground	R - Body ground	LH turn indicator light signal (Input)	Ignition switch ON, LH turn signal switch on	Below 1 V
F21-12 (VCM) - Body ground*1	L - Body ground	Vacuum warning switch signal	Engine started, vacuum warning switch off (brake warning light off)	11 to 14 V
F21-12 (VCM) - Body ground*1	L - Body ground	Vacuum warning switch signal	Engine started, vacuum warning switch on (brake warning light on)	Below 1 V
F21-13 (LR) - Body ground	R - Body ground	RH turn indicator light signal (Output)	Ignition switch ON, RH turn indicator light off	Below 1 V
F21-13 (LR) - Body ground	R - Body ground	RH turn indicator light signal (Output)	Ignition switch ON, RH turn indicator light blinking	11 to 14 V ←→ Below 1 V
F124-1 (B) - Body ground	P - Body ground	Battery	Always	11 to 14 V
F124-3 (FV) - Body ground*1	B - Body ground	Fuel sender gauge (Power source)	Ignition switch ON	4.5 to 5.5 V
F124-4 (FR) - F124-23 (FE)*2	W - BR	Fuel level signal	Ignition switch ON, fuel level full	Below 1 V
F124-4 (FR) - F124-23 (FE)*2	W - BR	Fuel level signal	Ignition switch ON, fuel level low (fuel level warning light on)	4.5 to 9 V
F124-4 (FR) - F124-23 (FE)*1	W - BR	Fuel level signal	Ignition switch ON, fuel level full	4.1 to 4.6 V
F124-4 (FR) - F124-23 (FE)*1	W - BR	Fuel level signal	Ignition switch ON, fuel level low (fuel level warning light on)	Below 1 V
F124-5 (+S) - Body ground	BE - Body ground	Speed signal for other system (Output)	Ignition switch ON, wheel being rotated	Pulse generation (See waveform 1)
F124-6 (SI) - Body ground	LG - Body ground	Speed signal for other system (Input)	Ignition switch ON, wheel being rotated	Pulse generation (See waveform 1)
F124-12 (RLSB) - Body ground	R - Body ground	Rear left No. 1 seat belt buckle switch signal	Ignition switch ON, rear No. 1 LH seat belt unfastened	Below 1 V
F124-12 (RLSB) - Body ground	R - Body ground	Rear left No. 1 seat belt buckle switch signal	Ignition switch ON, rear No. 1 LH seat belt fastened	11 to 14 V
F124-13 (RCSB) - Body ground*3	B - Body ground	Rear center No. 1 seat belt buckle switch signal	Ignition switch ON, rear No. 1 center seat belt unfastened	Below 1 V
F124-13 (RCSB) - Body ground*3	B - Body ground	Rear center No. 1 seat belt buckle switch signal	Ignition switch ON, rear No. 1 center seat belt fastened	11 to 14 V
F124-14 (RRSB) - Body ground	P - Body ground	Rear right No. 1 seat belt buckle switch signal	Ignition switch ON, rear No. 1 RH seat belt unfastened	Below 1 V
F124-14 (RRSB) - Body ground	P - Body ground	Rear right No. 1 seat belt buckle switch signal	Ignition switch ON, rear No. 1 RH seat belt fastened	11 to 14 V
F124-16 (S) - Body ground	B - Body ground	Oil pressure signal	Engine started	11 to 14 V
F124-16 (S) - Body ground	B - Body ground	Oil pressure signal	Engine not started	Below 1 V
F124-17 (B/LE) - Body ground	L - Body ground	Brake fluid level signal	Ignition switch ON, brake fluid level not low	11 to 14 V
F124-17 (B/LE) - Body ground	L - Body ground	Brake fluid level signal	Ignition switch ON, brake fluid level low	Below 1 V
F124-19 (E2) - Body ground	BR - Body ground	Ground	Always	Below 1 Ω
F124-20 (ILL-) - Body ground	W - Body ground	Illumination signal	Headlight dimmer switch off	Below 1 V
F124-20 (ILL-) - Body ground	W - Body ground	Illumination signal	Headlight dimmer switch in tail or head position	Pulse generation
F124-21 (IG+) - Body ground	G - Body ground	Ignition switch signal	Ignition switch off	Below 1 V
			Ignition switch ON	11 to 14 V
			Ignition switch ON	10.5 to 16 V
F124-24 (RLBT) - Body ground	P - Body ground	Rear left No. 2 seat belt buckle switch signal	Ignition switch ON, rear No. 2 LH seat belt unfastened	Below 1 V
F124-24 (RLBT) - Body ground	P - Body ground	Rear left No. 2 seat belt buckle switch signal	Ignition switch ON, rear No. 2 LH seat belt fastened	11 to 14 V
F124-25 (RCBT) - Body ground	R - Body ground	Rear center No. 2 seat belt buckle switch signal	Ignition switch ON, rear No. 2 center seat belt unfastened	Below 1 V
F124-25 (RCBT) - Body ground	R - Body ground	Rear center No. 2 seat belt buckle switch signal	Ignition switch ON, rear No. 2 center seat belt fastened	11 to 14 V
F124-26 (RRBT) - Body ground	B - Body ground	Rear right No. 2 seat belt buckle switch signal	Ignition switch ON, rear No. 2 RH seat belt unfastened	Below 1 V
F124-26 (RRBT) - Body ground	B - Body ground	Rear right No. 2 seat belt buckle switch signal	Ignition switch ON, rear No. 2 RH seat belt fastened	11 to 14 V
F124-27 (CANL) - Body ground	W - Body ground	CAN communication line	-	-
F124-28 (CANH) - Body ground	SB - Body ground	CAN communication line	-	-
F124-29 (MSCH) - Body ground	GR - Body ground	Local bus communication line	-	-
F124-30 (MSCL) - Body ground	SB - Body ground	Local bus communication line	-	-
F124-31 (ES) - Body ground	BR - Body ground	Ground	Always	Below 1 Ω
F124-34 (L) - Body ground	B - Body ground	Rear left No. 2 seat belt warning output signal	Ignition switch ON, rear seat belt warning light (rear No. 2 seat LH) off	11 to 14 V
F124-34 (L) - Body ground	B - Body ground	Rear left No. 2 seat belt warning output signal	Ignition switch ON, rear seat belt warning light (rear No. 2 seat LH) on	Below 1 Ω
F124-35 (R2CM) - Body ground	R - Body ground	Rear center No. 2 seat belt warning output signal	Ignition switch ON, rear seat belt warning light (rear No. 2 seat center) off	11 to 14 V
F124-35 (R2CM) - Body ground	R - Body ground	Rear center No. 2 seat belt warning output signal	Ignition switch ON, rear seat belt warning light (rear No. 2 seat center) on	Below 1 Ω
F124-36 (SW) - Body ground	L - Body ground	Rear right No. 2 seat belt warning output signal	Ignition switch ON, rear seat belt warning light (rear No. 2 seat RH) off	11 to 14 V
F124-36 (SW) - Body ground	L - Body ground	Rear right No. 2 seat belt warning output signal	Ignition switch ON, rear seat belt warning light (rear No. 2 seat RH) on	Below 1 Ω
F124-37 (MSSL) - Body ground	R - Body ground	Ground	Always	Below 1 Ω
F124-38 (MSTI) - Body ground	L - Body ground	Steering pad switch assembly signal	Ignition switch ON, up, down, right and left switches on steering pad switch assembly not pushed	4.6 to 5.2 V
			Ignition switch ON, up switch on steering pad switch assembly pushed	1 to 2.2 V
			Ignition switch ON, down switch on steering pad switch assembly pushed	2.5 to 3.4 V
			Ignition switch ON, right switch on steering pad switch assembly pushed	3.7 to 4.4 V
			Ignition switch ON, left switch on steering pad switch assembly pushed	Below 0.8 V
F124-39 (MSM+) - Body ground	V - Body ground	Steering pad switch assembly signal	Ignition switch ON, enter, back and top switches on steering pad switch assembly not pushed	4.6 to 5.2 V
			Ignition switch ON, enter switch on steering pad switch assembly pushed	Below 0.8 V
			Ignition switch ON, back switch on steering pad switch assembly pushed	2.5 to 3.4 V
			Ignition switch ON, top switch on steering pad switch assembly pushed	1 to 2.2 V
F124-40 (WLVL) - Body ground	SB - Body ground	Washer fluid level signal	Ignition switch ON, washer fluid level not low	11 to 14 V
F124-40 (WLVL) - Body ground	SB - Body ground	Washer fluid level signal	Ignition switch ON, washer fluid level low	Below 1 V
1: for 2GR-FKS 2: for 1AR-FE *3: for 60/40 Split Seat Type

Waveform 1 (Reference):

Fig 2: Waveform 1

Item	Condition
Tool setting	5 V/DIV., 20 ms./DIV.
Vehicle condition	Ignition switch ON, wheel being rotated

HINT:

When the system is functioning normally, one wheel revolution generates 4 pulses. As the vehicle speed increases, the width indicated by (A) in the illustration narrows.