Terminals Of Ecu [07/2015 - ]
- TERMINAL INSPECTION TEXT IN ILLUSTRATION
*a Component without harness connected
(Steering Lock ECU (Steering Lock Actuator Assembly))- - - 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 H18-1 (GND) - Body ground - W-B - Body ground Ground* Always Below 1 Ω - H18-3 (IGE) - H18-1 (GND) Input L - W-B Steering lock motor activation command signal (motor activation command signal sent from certification ECU (smart key ECU assembly)) Any door opened when conditions below met, and then steering lock motor activated: - Shift lever in P
- Steering lock unlocked in advance by carrying key and turning power switch on (IG)
- After above conditions met, power switch turned off
Pulse generation (see waveform) Smart Access - Power Supply Short
- Unlock Request Receive
- Lock Request Receive
H18-4 (SLP1) - H18-1 (GND) Output P - W-B Steering lock bar position signal (output signal from steering unlock sensor) Steering locked → unlocked 11 to 14 V → Below 1.2 V Smart Access - Push Start Error
- Sensor Value
H18-5 (LIN) - H18-1 (GND) Input/Output B - W-B LIN communication line - - Smart Access - Steering Lock Start Cond
H18-6 (IG2) - H18-1 (GND) Input LG - W-B Power source mode signal (IG2 power supply input for entire steering lock actuator assembly)* Power switch off → power switch on (IG) Below 1 V → 11 to 14 V Smart Access - Ignition Switch
H18-7 (B) - Body ground Input B - Body ground Power source* Power switch off 11 to 14 V - - *: When there is a problem with the power source input, the certification ECU (smart key ECU assembly) may store DTC B2786.
NOTE:There is 1 motor and 2 sensors built into the steering lock actuator assembly.
HINT:
- When taking measurements when the lock motor is stopped, it is not necessary to perform any operations.
- In order to take measurements when the lock motor is operating, perform either of the following operations:
- To unlock the steering, carry the key and turn the power switch on (ACC) or on (IG) with the shift lever in P.
- To lock the steering, turn the power switch off with the shift lever in P, and then open a door.
- Waveform
Item Content Tester Connection H18-3 (IGE) - H18-1 (GND) Tool Setting 2 V/DIV., 200 ms./DIV. Vehicle 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
- Measure the voltage and resistance according to the value(s) in the table below.