Terminals Of Ecu [11/2016 - ]

Fig 1: Certification ECU (Smart Key ECU Assembly) Connector Terminal Identification (11/2016 -)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the F9 and F123 certification ECU (smart key ECU assembly) connectors.
2. 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)	Input/Output	Wiring Color	Terminal Description	Condition	Specified Condition	Related Data List Item
   F9-2 (STP1) - Body ground	Input	G - Body ground	Stop light switch signal	Brake pedal depressed → Brake pedal released	9 V or higher → 1 V or less	Stop Light Switch1
   F123-10 (+B) - F123-11 (E)	Input	GR - W-B	Power source	Power switch off	11 to 14 V	-
   F123-22 (P) - F123-11 (E)	Input	V - W-B	P position signal	Shift lever in P → Shift lever not in P	30 kΩ or higher → Below 200 Ω	Shift P Signal
   F123-11 (E) - Body ground	-	W-B - Body ground	GND	Always	Below 1 Ω	-
   F123-18 (SSW2) - Body ground	Input	V - Body ground	SSW2 contact signal HINT:  Backup for SSW1. Behaves the same way as SSW1.	Power switch pushed → Power switch not pushed	Below 15 Ω → 10 kΩ or higher	Start Switch2
   F123-16 (SSW1) - Body ground	Input	Y - Body ground	SSW1 contact signal	Power switch pushed → Power switch not pushed	Below 15 Ω → 10 kΩ or higher	Start Switch1
   F123-9 (ACCD) - Body ground	Output	GR - Body ground	ACC signal	20°C (68°F)	130.92 to 190.74 Ω	ACC Relay Monitor
   F9-3 (IG1D) - Body ground	Output	G - Body ground	IG signal	20°C (68°F)	87.32 to 127.14 Ω	IG Relay Monitor (Outside)
   F123-5 (SPD) - Body ground	Input	BE - Body ground	Vehicle speed signal	Always	30 kΩ or higher	Vehicle Speed Signal

3. Reconnect the F9 and F123 certification ECU (smart key ECU assembly) connectors.
4. Measure the voltage and check for pulses according to the value(s) in the table below.

   Terminal No. (Symbol)	Input/Output	Wiring Color	Terminal Description	Condition	Specified Condition	Related Data List Item
   F9-2 (STP1) - F123-11 (E)	Input	G - W-B	Stop light switch signal	Brake pedal depressed → Brake pedal released	9 V or higher → 1 V or less	Stop Light Switch1
   F123-23 (SLP-) - F123-11 (E)	Input	LG - W-B	Steering lock position signal	Steering locked → Steering unlocked	11 to 14 V → 1.5 V or less	Steering Unlock Switch
   F123-24 (SLR+) - F123-11 (E)	Output	V - W-B	Steering lock motor operation command signal (Steering lock motor operation permission signal sent from the certification ECU (smart key ECU assembly))	When a door is opened, the steering lock motor will be operated if all of the following conditions are met: The steering is unlocked. The power switch is off. The shift lever is in P.	Pulse generation (See waveform 1)	-
   F123-22 (P) - F123-11 (E)	Input	V - W-B	P position signal	Shift lever in P → Shift lever not in P	9 V or higher → 2.76 V or less	Shift P Signal
   F123-18 (SSW2) - F123-11 (E)	Input	V - W-B	SSW2 contact signal HINT:  Backup for SSW1. Behaves the same way as SSW1.	Power switch not pushed → Power switch pushed	9 V or higher → 1 V or less	Start Switch2
   F123-16 (SSW1) - F123-11 (E)	Input	Y - W-B	SSW1 contact signal	Power switch not pushed → Power switch pushed	9 V or higher → 1 V or less	Start Switch1
   F123-9 (ACCD) - F123-11 (E)	Output	GR - W-B	ACC signal	Power switch off → Power switch on (ACC)	1 V or less → 8.5 V or higher	ACC Relay Monitor
   F9-3 (IG1D) - F123-11 (E)	Output	G - W-B	IG signal	Power switch on (ACC) → Power switch on (IG)	1 V or less → 9 V or higher	IG Relay Monitor (Outside)
   F123-5 (SPD) - F123-11 (E)	Input	BE - W-B	Vehicle speed signal	Vehicle being driven at approx. 5 km/h (3 mph)	Pulse generation (See waveform 2)	Vehicle Speed Signal

   HINT: 

   • The waveform of the steering lock actuator motor stopped can be checked without performing any particular operation.
   • The waveform of the steering lock actuator motor operating can be checked if either of the following operations is performed:
     • To unlock the steering, bring the electrical key transmitter sub-assembly into the cabin and turn the power switch on (ACC) or on (IG).
     • To lock the steering, open a door with the power switch off and the shift lever in P.
5. Using an oscilloscope, check the waveform of the ECU.
   NOTE:

   The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

   1. Waveform 1
      Fig 2: Waveform 1

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Item	Content
      Tester Connection	F123-24 (SLR+) - F123-11 (E)
      Tool Setting	2 V/DIV., 200 ms./DIV.
      Condition	Steering lock motor stopped → Steering lock motor operating → Steering lock motor stopped

      *a	Steering lock motor not operating
      *b	Steering lock motor operating

   2. Waveform 2
      Fig 3: Waveform 2

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Item	Content
      Tester Connection	F123-5 (SPD) - F123-11 (E)
      Tool Setting	5 V/DIV., 20 ms./DIV.
      Condition	Vehicle being driven at approx. 5 km/h (3 mph)

      HINT: 

      The wavelength becomes shorter as the vehicle speed increases.

Refer to TERMINALS OF ECU [11/2016 - ]

Refer to TERMINALS OF ECU [11/2016 - ]