Terminals Of Ecu [05/2013 - ]

HINT: 

• For the layout of the certification ECU (smart key ECU assembly) (verification-related) terminals, refer to the following. Refer to TERMINALS OF ECU [05/2013 - ] .
• For the layout of the ID code box (immobilizer code ECU) terminals, refer to the following. Refer to TERMINALS OF ECU [05/2013 - ] .
• For the layout of the steering lock ECU (steering lock actuator assembly) terminals, refer to the following. Refer to TERMINALS OF ECU [05/2013 - ] .

1. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 
   Fig 1: Certification ECU Connector Terminal Identification (Smart Key ECU Assembly)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Disconnect the D41 and D48 certification ECU (smart key ECU assembly) connectors.
   2. Measure the voltage and resistance 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
      D41-4 (ACCD) - Body ground	Output	SB - Body ground	ACC signal	20°C (68°F)	81.49 to 118.98 Ω	ACC Relay Monitor
      D41-6 (IG1D) - Body ground	Output	W - Body ground	IG1 signal	20°C (68°F)	40.74 to 54.49 Ω	IG1 Relay Monitor (Outside)
      D41-25 (P) - D48- 11 (GND)*1	Input	Y - B	Shift lever P position switch signal	Shift lever in P → Shift lever not in P	Below 200 Ω → 40 kΩ or higher	Shift P Signal
      D41-26 (SLP) - D48-11 (GND)	Input	LG - B	Steering lock bar position signal	Always	10 kΩ or higher	Steering Unlock Switch
      D41-27 (SPD) - Body ground	Input	P - Body ground	Vehicle speed signal	Always	30 kΩ or higher	Vehicle Speed
      D41-28 (SSW1) - Body ground	Input	P - Body ground	SSW1 contact signal	Engine switch pushed → Engine switch not pushed	Below 1 Ω → 10 kΩ or higher	Start Switch1
      D41-30 (SSW2) - Body ground	Input	BE - Body ground	SSW2 contact signal (backup for SSW1 and has same behavior as SSW1) HINT:  Backup for SSW1. Behaves the same way as SSW1.	Engine switch pushed → Engine switch not pushed	Below 1 Ω → 10 kΩ or higher	Start Switch2
      D48-5 (N-SW) - Body ground*1	Input	W - Body ground	Neutral switch signal	Engine switch on (IG), shift lever in P or N → Engine switch on (IG), shift lever not in P or N	Below 1 Ω → 10 kΩ or higher	Neutral SW/ Clutch SW
      D48-10 (CLUT) - Body ground*2	Input	Y - Body ground	Clutch switch signal	Perform the following operations except while the engine is cranking: Clutch pedal released → Clutch pedal depressed	1 V or less → 9 V or higher	Neutral SW/ Clutch SW
      D48-11 (GND) - Body ground	-	B - Body ground	Ground	Always	Below 1 Ω	-
      D48-9 (IG2D) - Body ground	Output	V - Body ground	IG2 signal	20°C (68°F)	74.15 to 460.88 Ω	IG2 Relay Monitor (Outside)
      D48-2 (+B) - Body ground	Input	R - Body ground	+B power supply	Always	11 to 14 V	-
      D48-17 (TACH) - Body ground	Input	GR - Body ground	Engine speed signal	Always	10 kΩ or higher	Engine Condition
      D48-18 (STP1) - Body ground*1	Input	L - Body ground	Stop light switch signal	Brake pedal depressed → Brake pedal released	9 V or higher → 1 V or less	Stop Light Switch1

      • *1: for Automatic Transmission
      • *2: for Manual Transmission

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

   3. Reconnect the D41 and D48 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
      D41-5 (IG2) - D48-11 (GND)	Input	Y - BR	Engine switch power supply	Engine switch off → on (IG)	Below 1 V → 11 to 14 V	Ignition Switch
      D41-25 (P) - D48-11 (GND)*1	Input	Y - B	Shift lever P position switch signal	Shift lever in P →Shift lever not in P	1.5 V or less → 9 V or higher	Shift P Signal
      D41-4 (ACCD) - D48-11 (GND)	Output	SB - B	ACC signal	Engine switch off → Engine switch on (ACC)	1 V or less → 8.5 V or higher	ACC Relay Monitor
      D41-6 (IG1D) - D48-11 (GND)	Output	W - B	IG1 signal	Engine switch on (ACC) → Engine switch on (IG)	1 V or less → 9 V or higher	IG1 Relay Monitor(Outside)
      D41-26 (SLP) - D48-11 (GND)	Input	LG - B	Steering lock bar position signal	Steering locked → Steering unlocked*3	11 to 14 V → 1.2 V or less	Steering Unlock Switch
      D41-27 (SPD) - D48-11 (GND)	Input	P - B	Vehicle speed signal	Engine switch on (IG), vehicle being driven at approx. 5 km/h (3 mph)	Pulse generation (See waveform 1 in  1)	Vehicle Speed
      D41-28 (SSW1) - D48-11 (GND)	Input	P - B	Engine switch signal	Engine switch not pushed → Engine switch pushed	9 V or higher → 1 V or less	Start Switch1
      D41-29 (SLR+) - D48-11 (GND)	Output	Y - B	Steering lock motor activation command signal (motor activation permission signal sent from certification ECU (smart key ECU assembly))	Steering lock motor operating → Steering lock motor not operating → Steering lock motor operating*4	Pulse generation (See waveform 2 in  2)	-
      D41-30 (SSW2) - D48-11 (GND)	Input	BE - B	SSW2 contact signal HINT:  Backup for SSW1. Behaves the same way as SSW1.	Engine switch not pushed → Engine switch pushed	9 V or higher → 1 V or less	Start Switch2
      D48-7 (STSW) - D48-11 (GND)	Output	P - B	Starter request signal	With the brake pedal*1 or clutch pedal*2 depressed, the engine switch is pressed and held (starter on) → After approx. 1 sec. has elapsed, the engine switch is released (starter off)	2 V or less → 9 V or higher	Starter Request Signal
      D48-5 (N-SW) - Body ground*1	Input	W - Body ground	Neutral switch signal	Engine switch on (IG), shift lever in P or N → Engine switch on (IG), shift lever not in P or N	1 V or less → 9 V or higher	Neutral SW/ Clutch SW
      D48-10 (CLUT) - Body ground*2	Input	Y - Body ground	Clutch switch signal	Perform the following operations except while the engine is cranking: Clutch pedal released → Clutch pedal depressed	1 V or less → 9 V or higher	Neutral SW/ Clutch SW
      D40-28 (ACCR) - D48-11 (GND)	Input	BE - B	ACC relay cut signal	With the brake pedal*1 or clutch pedal*2 depressed, the engine switch is pressed and held (starter on) → After approx. 1 sec. has elapsed, the engine switch is released (starter off)	2 V or less → 9 V or higher	ACC Relay Cut Signal
      D48-17 (TACH) - D48-11 (GND)	Input	GR - B	Crankshaft position sensor signal	Idling with warm engine	Pulse generation (See waveform 3 in  3)	Engine Condition
      D48-9 (IG2D) - D48-11 (GND)	Output	V - B	IG2 signal	Engine switch on (ACC) → Engine switch on (IG)	1 V or less → 9 V or higher	IG2 Relay Monitor(Outside)
      D48-18 (STP1) - D48-11 (GND)*1	Input	L - B	Stop light switch signal	Brake pedal released → Brake pedal depressed	1 V or less → 9 V or higher	Stop Light Switch1

      • *1: for Automatic Transmission
      • *2: for Manual Transmission

      HINT: 

      • *3: When the shift lever is in P (for Automatic Transmission) and the engine switch is off, if any door is opened or closed, the steering is locked. When the key is inside the vehicle and the engine switch is turned on (ACC) or on (IG), the steering unlocks.
      • *4: The steering lock motor operates when the following conditions are met and a door is opened:
        • The shift lever is in P (for Automatic Transmission).
        • While carrying the electrical key transmitter sub-assembly, the engine switch is turned on (IG) to unlock the steering, and then the engine switch is turned off.
   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 (Reference)
         Fig 2: Waveform 1

         Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

         Item	Content
         Tester Connection	D41-27 (SPD) - D48-11 (GND)
         Tool Setting	5 V/DIV., 100 ms./DIV.
         Condition	Engine switch on (IG), vehicle being driven at approx. 5 km/h (3 mph)

         HINT: 

         The wavelength becomes shorter as the vehicle speed increases.

      2. Waveform 2 (Reference)
         Fig 3: Waveform 2

         Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

         Item	Content
         Tester Connection	D41-29 (SLR+) - D48-11 (GND)
         Tool Setting	2 V/DIV., 200 ms./DIV.
         Condition	Steering lock motor not operating → Steering lock motor operating → Steering lock motor not operating*

         TEXT IN ILLUSTRATION
         
         

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

         HINT: 

         *: When all of the following conditions are met, open any of the doors to operate the steering lock motor.

         • The shift lever is in P*.
           • *: for Automatic Transmission
         • While carrying the electrical key transmitter sub-assembly, the engine switch is turned on (IG) and the steering wheel is unlocked.
         • The engine switch is off.
      3. Waveform 3 (Reference)
         Fig 4: Waveform 3

         Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

         Item	Content
         Tester Connection	D48-17 (TACH) - D48-11 (GND)
         Tool Setting	2 V/DIV., 2 ms./DIV.
         Condition	Idling with warm engine

         HINT: 

         The wavelength becomes shorter as the engine speed increases.

2. CHECK ECM 
   Fig 5: ECM Connector Terminal Identification - Engine Immobilizer System (W/ Smart Key System)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Measure the resistance and 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/DTC
      A36-4 (E01) - Body ground	-	B-L - Body ground	Ground	Always	Below 1 Ω	-
      A33-14 (STSW2) - A36-4 (E01)	Input	BR - B-L	Starter switch signal	Engine switch on (IG)	1 V or less	Starter Control
      				Cranking	6 to 13 V
      A33-16 (NSW) - A36-4 (E01)	Input	W-R - B-L*1 G-B - B-L*2	Neutral switch signal	Engine switch on (IG), shift lever in not P or N	10 to 13 V	-
      				Engine switch on (IG), shift lever in P or N	1 V or less
      A33-17 (STSW) - A36-4 (E01)	Input	G-W - B-L	Starter request signal	Engine switch on (IG)	1 V or less	-
      				Cranking	6 V or higher
      A35-15 (TACH) - A36-4 (E01)	Output	GR-R - B-L	Engine speed signal	Idling with warm engine	Pulse generation (See waveform 1)	Engine Speed
      A35-26 (STA) - A36-4 (E01)	Output	B-L - B-L	Starter relay signal	Engine switch on (IG)	11 to 14 V → 1 V or less	Starter Signal
      				Cranking	10 to 13 V
      A35-32 (ACCR) - A36-4 (E01)	Output	G-Y - B-L	ACC relay cut signal	Engine switch on (IG)	10 to 13 V	-
      				Cranking	1 V or less
      A35-34 (STAR) - A36-4 (E01)	Output	LG-R - B-L	Starter relay cut signal	Engine switch on (IG)	10 to 13 V	Starter Cut Relay
      				Cranking	1 V or less

      • *1: for Automatic Transmission
      • *2: for Manual Transmission

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

   2. Inspect using an oscilloscope.
      NOTE:

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

      1. Waveform 3 (Reference)
         Fig 6: Waveform

         Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

         Item	Content
         Tester Connection	A35-15 (TACH) - A36-4 (E01)
         Tool Setting	2 V/DIV., 2 ms./DIV.
         Condition	Idling with warm engine

         HINT: 

         The wavelength becomes shorter as the engine speed increases.