THEFT DETERRENT / KEYLESS ENTRY  SMART ENTRY AND START SYSTEM(for Start Function)  TERMINALS OF ECU  


CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


B401576N21
1.802,0.646 2.219,0.938 0.417,0.292 3.198,0.646 3.615,0.938 0.417,0.292 4.771,0.646 5.188,0.938 0.417,0.292 1.854,0.708 2.313,0.906 0.458,0.198 10 false E108 3.25,0.708 3.865,0.906 0.615,0.198 10 false E109 4.813,0.719 5.427,0.917 0.615,0.198 10 false E110

a.

Disconnect the E110 and E108 certification ECU (smart key ECU assembly) connectors.


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.


Tester Connection Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item
E108-7 (STA) - Body ground Input LG - Body ground When starting the engine, this monitors the voltage sent from terminal STAR to the starter relay to judge whether the engine is "being started". 20°C (68°F) 98 to 146 Ω -
E108-5 (STAR) - Body ground*1 Input/Output W - Body ground Outputs voltage to the starter relay
·

Outputs voltage (12 V) to the starter relay when starting the engine. (Max. 30 sec. Turns off when an engine speed of 500 rpm or more continues for 500 ms or more.)


Shift lever in any position other than P or N → shift lever in P or N (at 20°C (68°F)) 30 kΩ or higher → 98 to 146 Ω -
Receives park/neutral position switch assembly (P, N position detection) signal
·

Monitors whether the park/neutral position switch assembly is on (P or N) or off (other than P or N). Applies voltage via a resistor (large) in the certification ECU (smart key ECU assembly). When the park/neutral position switch assembly is on, due to the starter relay coil resistance (small) using some of the voltage, the voltage at terminal STAR will be low (2.7 V or less), and when the park/neutral position switch assembly is off, the voltage will be high (9 V or more).


Perform the following operation except while the engine is cranking:
·

Shift lever in any position other than P or N → shift lever in P or N (at 20°C (68°F))


30 kΩ or higher → 98 to 146 Ω Neutral SW/ Clutch SW
E108-5 (STAR) - Body ground*2 Input/Output W - Body ground Outputs voltage to the starter relay
·

Outputs voltage (12 V) to the starter relay when starting the engine. (Max. 30 sec. Turns off when an engine speed of 500 rpm or more continues for 500 ms or more.)


Clutch pedal released → Clutch pedal depressed 30 kΩ or higher → 98 to 146 Ω -
Receives clutch start switch signal
·

Monitors whether the clutch start switch is on (clutch pedal depressed) or off (clutch pedal released). Applies voltage via a resistor (large) in the certification ECU (smart key ECU assembly). When the clutch start switch is on, due to the starter relay coil resistance (small) using some of the voltage, the voltage at terminal STAR will be low (2.7 V or less), and when the clutch start switch is off, the voltage will be high (9 V or more).


Perform the following operation except while the engine is cranking:
·

Clutch pedal released →Clutch pedal depressed


30 kΩ or higher → 98 to 146 Ω Neutral SW/ Clutch SW
E108-16 (NE) - Body ground Input L - Body ground Engine speed signal Always 10 kΩ or higher Engine Condition
E108-9 (IG2D) - Body ground Output GR - Body ground IG2 signal 20°C (68°F) 134 to 200 Ω IG2 Relay Monitor(Outside)
E108-18 (STP1) - Body ground 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
E108-2 (+B) - E108-11 (E) Input L - W-B Power source Always 11 to 14 V -
E110-26 (SLP) - E108-11 (E) Input G - W-B Steering lock position signal Always 10 kΩ or higher Steering Unlock Switch
E108-11 (E) - Body ground - W-B - Body ground GND Always Below 1 Ω -
E110-30 (SSW2) - Body ground Input B - Body ground SSW2 contact signal
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
E110-28 (SSW1) - Body ground Input SB - Body ground SSW1 contact signal Engine switch pushed → Engine switch not pushed Below 1 Ω → 10 kΩ or higher Start Switch1
E110-4 (ACCD) - Body ground Output B - Body ground ACC signal 20°C (68°F) 160 to 240 Ω ACC Relay Monitor
E110-6 (IG1D) - Body ground Output G - Body ground IG1 signal 20°C (68°F) 53 to 80 Ω IG1 Relay Monitor(Outside)
E108-10 (CUTB) - E108-11 (E) Input LG - W-B Dark current cut pin*3 Always 11 to 14 V -
E110-27 (SPD) - Body ground Input V - Body ground Vehicle speed signal Always 30 kΩ or higher Vehicle Speed Signal

·

*1: except Manual Transaxle

·

*2: for Manual Transaxle

·

*3: In order to prevent the vehicle battery from being depleted when the vehicle is shipped long distances, a fuse that cuts unnecessary electrical load while the vehicle is being shipped is set in the circuit. If the fuse is removed, the circuit becomes open. If the fuse that is between the vehicle battery and terminal CUTB is removed and the circuit is open, the certification ECU (smart key ECU assembly) changes to a certain control mode (example: the transmission of electric waves every 0.25 seconds. that form the detection area stops).



c.

Reconnect the E110 and E108 certification ECU (smart key ECU assembly) connectors.


d.

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

Tester Connection Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item
E108-7 (STA) - E108-11 (E) Input LG - W-B When starting the engine, this monitors the voltage sent from terminal STAR to the starter relay to judge whether the engine is "being started". With the brake pedal depressed, the engine switch is pressed and held (starter on) → After approx. 1 sec. has elapsed, the engine switch is released (starter off)*1 9.5 V or higher*3 → 1 V or less -
With the clutch pedal depressed, the engine switch is pressed and held (starter on) → After approx. 1 sec. has elapsed, the engine switch is released (starter off)*2
E108-5 (STAR) - E108-11 (E)*1 Input/Output W - W-B Outputs voltage to the starter relay
·

Outputs voltage (12 V) to the starter relay when starting the engine. (Max. 30 sec. Turns off when an engine speed of 500 rpm or more continues for 500 ms or more.)


HINT:

When Hi is selected, a start request signal (STAR) will not be output even though a start request signal (STSW) is input.


With the brake pedal depressed, the engine switch is pressed and held → After approx. 1 sec. has elapsed, the engine switch is released 9.5 V or higher*3 → 1 V or less -
Receives park/neutral position switch assembly (P, N position detection) signal
·

Monitors whether the park/neutral position switch assembly is on (P or N) or off (other than P or N). Applies voltage via a resistor (large) in the certification ECU (smart key ECU assembly). When the park/neutral position switch assembly is on, due to the starter relay coil resistance (small) using some of the voltage, the voltage at terminal STAR will be low (2.7 V or less), and when the park/neutral position switch assembly is off, the voltage will be high (9 V or more).


Perform the following operation except while the engine is cranking:
·

Shift lever in any position other than P or N → shift lever in P or N (at 20°C (68°F))


9 V or higher → 2.7 V or less Neutral SW/ Clutch SW
E108-5 (STAR) - E108-11 (E)*2 Input/Output W - W-B Outputs voltage to the starter relay
·

Outputs voltage (12 V) to the starter relay when starting the engine. (Max. 30 sec. Turns off when an engine speed of 500 rpm or more continues for 500 ms or more.)


HINT:

When Hi is selected, a start request signal (STAR) will not be output even though a start request signal (STSW) is input.


With the clutch pedal depressed, the engine switch is pressed and held → After approx. 1 sec. has elapsed, the engine switch is released 9.5 V or higher*3 → 1 V or less -
Receives clutch start switch signal
·

Monitors whether the clutch start switch is on (clutch pedal depressed) or off (clutch pedal released). Applies voltage via a resistor (large) in the certification ECU (smart key ECU assembly). When the clutch start switch is on, due to the starter relay coil resistance (small) using some of the voltage, the voltage at terminal STAR will be low (2.7 V or less), and when the clutch start switch is off, the voltage will be high (9 V or more).


Perform the following operation except while the engine is cranking:
·

Clutch pedal released → Clutch pedal depressed


9 V or higher → 2.7 V or less Neutral SW/ Clutch SW
E108-16 (NE) - E108-11 (E) Input L - W-B Engine speed signal Idling (engine warmed up) Pulse generation
(See waveform 1) 		Engine Condition
E108-9 (IG2D) - E108-11 (E) Output GR - W-B IG2 signal Engine switch on (ACC) → Engine switch on (IG) 1 V or less → 9 V or higher IG2 Relay Monitor(Outside)
E108-18 (STP1) - E108-11 (E) Input L - W-B Stop light switch signal Brake pedal released → Brake pedal depressed 1 V or less → 9 V or higher Stop Light Switch1
E110-26 (SLP) - E108-11 (E) Input G - W-B Steering lock position signal Steering locked → Steering unlocked*4 11 to 14 V → 1.2 V or less Steering Unlock Switch
E110-29 (SLR+) - E108-11 (E) Output P - W-B Steering lock motor operation command signal
(Steering lock motor operation permission signal sent from the certification ECU (smart key ECU assembly)) 		Steering lock motor stopped → Steering lock motor operating → Steering lock motor stopped*5 Pulse generation
(See waveform 2) 		-
E110-25 (P) - E108-11 (E)*1 Input R - W-B P position signal Shift lever in P → Shift lever not in P 9 V or higher → 1.5 V or less Shift P Signal
E110-30 (SSW2) - E108-11 (E) Input B - W-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
E110-28 (SSW1) - E108-11 (E) Input SB - W-B SSW1 contact signal Engine switch not pushed → Engine switch pushed 9 V or higher → 1 V or less Start Switch1
E110-4 (ACCD) - E108-11 (E) Output B - W-B ACC signal Engine switch off → Engine switch on (ACC) 1 V or less → 8.5 V or higher ACC Relay Monitor
E110-6 (IG1D) - E108-11 (E) Output G - W-B IG1 signal Engine switch on (ACC) → Engine switch on (IG) 1 V or less → 9 V or higher IG1 Relay Monitor(Outside)
E110-27 (SPD) - E108-11 (E) Input V - W-B Vehicle speed signal Vehicle being driven at approx. 5 km/h (3 mph) Pulse generation
(See waveform 3) 		Vehicle Speed Signal

HINT:
·

*1: except Manual Transaxle

·

*2: for Manual Transaxle

·

*3: While the engine is cranking, the battery voltage may drop to approximately 6 V.

·

*4: When the engine switch is turned off with the shift lever in P (except Manual Transaxle) and any of the doors are opened or closed, the steering will be locked. When the engine switch is turned on (ACC) or on (IG), the steering will be unlocked.

·

*5: To check the waveform of the steering lock motor while it is operating, perform the following operations:

·

To operate the steering lock motor to lock the steering, open a door with the engine switch off and the shift lever in P (except Manual Transaxle).

·

To operate the steering lock motor to unlock the steering, bring the electrical key transmitter sub-assembly into the cabin and turn the engine switch on (ACC) or on (IG).





e.

Using an oscilloscope, check the waveform of the ECU.

NOTICE:

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


i.
C222647N09
2.948,1.75 3.281,1.906 0.333,0.156 10 GND

Waveform 1

Item Content
Tester Connection E108-16 (NE) - E108-11 (E)
Tool Setting 2 V/DIV., 2 ms./DIV.
Vehicle Condition Idling (engine warmed up)

HINT:

The wavelength becomes shorter as the engine speed increases.



ii.
C221561C22
0.229,0.406 1.635,0.573 1.406,0.167 1.469,1.573 2.438,1.698 0.969,0.125 2.281,0.469 2.708,0.625 0.427,0.156 1.938,1.698 2.021,1.979 2.021,1.979 2.073,1.979 false 1.646,0.438 2.76,0.198 2.76,0.198 2.833,0.198 false 2.75,0.208 2.552,0.458 false 2.906,1.583 3.281,1.729 0.375,0.146 10 GND 2.125,1.896 2.615,2.042 0.49,0.146 10 *b 2.865,0.125 3.229,0.354 0.365,0.229 10 *a
*a Steering lock motor not operating
*b Steering lock motor operating


Waveform 2

Item Content
Tester Connection E110-29 (SLR+) - E108-11 (E)
Tool Setting 2 V/DIV., 200 ms./DIV.
Vehicle Condition Steering lock motor stopped →
Steering lock motor operating →
Steering lock motor stopped*

HINT:

*: To check the waveform of the steering lock motor while it is operating, perform the following operations:

·

To operate the steering lock motor to lock the steering, open a door with the engine switch off and the shift lever in P (except Manual Transaxle).

·

To operate the steering lock motor to unlock the steering, bring the electrical key transmitter sub-assembly into the cabin and turn the engine switch on (ACC) or on (IG).




iii.
B220145N15
2.875,1.164 3.228,1.332 0.353,0.168 10 GND

Waveform 3

Item Content
Tester Connection E110-27 (SPD) - E108-11 (E)
Tool Setting 5 V/DIV., 20 ms./DIV.
Vehicle Condition Vehicle being driven at approx. 5 km/h (3 mph)

HINT:

The wavelength becomes shorter as the vehicle speed increases.