Terminals Of Ecu [03/2017 - ]
- STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU)
- Disconnect the D59 steering lock actuator assembly (steering lock ECU) connector.
- 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 D59-1 (GND) - Body ground - B - Body ground Ground*2 Always Below 1 Ω - D59-3 (SLR+) - D59-1 (GND) Input Y - 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 is in P*1
- Steering lock unlocked in advance by carrying key and turning engine switch on (IG)
- After above condition met, engine switch turned off
Pulse generation (see waveform below) Smart Key - Power Supply Short
- Unlock Request Receive
- Lock Request Receive
D59-4 (SLP) - D59-1 (GND) Output LG - B Steering lock bar position signal (output signal from steering unlock sensor) Steering locked → unlocked 11 to 14 V → Below 1.2 V Smart Key - Push Start Error
- Sensor Value
D59-5 (LIN) - D59-1 (GND) Input/Output W - B LIN communication line - - Smart Key - Steering Lock Start Cond
D59-6 (IGN1) - D59-1 (GND) Input BR - B Power source mode signal (IG2 power supply input for entire steering lock actuator assembly)*2 Engine switch off → engine switch on (IG) Below 1 V → 11 to 14 V Smart Key - Ignition Switch
D59-7 (B) - Body ground Input SB - Body ground Power source*2 Always 11 to 14 V - - *1: for Automatic Transmission
- *2: 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 engine switch on (ACC) or on (IG).
- To lock the steering, turn the engine switch off with the shift lever is in P*, and then open a door.
- *: for Automatic Transmission
- Waveform
Item Content Tester Connection D59-3 (SLR+) - D59-1 (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
- Disconnect the D59 steering lock actuator assembly (steering lock ECU) connector.