CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here
CHECK HEADLIGHT ECU SUB-ASSEMBLY LH Click here
CHECK HEADLIGHT ECU SUB-ASSEMBLY RH Click here
CHECK HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY
Measure the voltage, resistance and check for pulses according to the value(s) in the table below.
Tech Tips
Since the headlight light control ECU sub-assembly is connected to a connector inside the headlight assembly, the voltage, resistance and pulse cannot be checked directly. The voltage, resistance and pulse listed are for reference only.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| K-1 - Body ground | - | Ground | Always | Below 1 Ω |
| K-2 - K-20 | - | LED array output | Power switch off | Below 1 V |
| Power switch on (IG) and high beam headlights illuminated by manual operation | Pulse generation | |||
| K-2 - K-20 | - | LED array output | Power switch off | Below 1 V |
| Power switch on (IG) and high beam headlights illuminated by manual operation | Pulse generation | |||
| K-5 - K-6 | - | LED array fan power source | Power switch off | Below 1 V |
| Power switch on (IG) and high beam headlights illuminated by manual operation | 4.75 to 5.25 V | |||
| K-7 - K-6 | - | LED array fan control signal | Power switch off | Below 1 V |
| Power switch on (IG) and high beam headlights illuminated by manual operation | Pulse generation | |||
| K-9 - Body ground | - | LIN communication | Power switch on (IG) | Pulse generation |
| K-10 - Body ground | - | Power source | Power switch off | Below 1 V |
| Power switch on (IG) | 11 to 14 V | |||
| K-11 - K-20 | - | LED array output | Power switch off | Below 1 V |
| Power switch on (IG) and high beam headlights illuminated by manual operation | Pulse generation | |||
| K-12 - K-20 | - | LED array output | Power switch off | Below 1 V |
| Power switch on (IG) and high beam headlights illuminated by manual operation | Pulse generation | |||
| K-13 - K-20 | - | LED array output | Power switch off | Below 1 V |
| Power switch on (IG) and high beam headlights illuminated by manual operation | Pulse generation | |||
| K-14 - K-20 | - | LED array output | Power switch off | Below 1 V |
| Power switch on (IG) and high beam headlights illuminated by manual operation | Pulse generation | |||
| K-15 - K-20 | - | LED array output | Power switch off | Below 1 V |
| Power switch on (IG) and high beam headlights illuminated by manual operation | Pulse generation | |||
| K-16 - K-20 | - | LED array output | Power switch off | Below 1 V |
| Power switch on (IG) and high beam headlights illuminated by manual operation | Pulse generation | |||
| K-17 - K-20 | - | LED array output | Power switch off | Below 1 V |
| Power switch on (IG) and high beam headlights illuminated by manual operation | Pulse generation | |||
| K-18 - K-20 | - | LED array output | Power switch off | Below 1 V |
| Power switch on (IG) and high beam headlights illuminated by manual operation | Pulse generation | |||
| K-19 - K-20 | - | LED array output | Power switch off | Below 1 V |
| Power switch on (IG) and high beam headlights illuminated by manual operation | Pulse generation |