RM38N0EC
_52
Drivetrain
_119335
GF1A TRANSFER / 4WD / AWD
_0524142
DYNAMIC TORQUE CONTROL AWD SYSTEM
U
GF1A TRANSFER / 4WD / AWD DYNAMIC TORQUE CONTROL AWD SYSTEM TERMINALS OF ECU
CHECK 4WD ECU ASSEMBLY
a.
Measure the voltage and resistance of the connector.
| Terminal No. (Symbol) | Terminal Description | Condition | Specified Condition |
|---|---|---|---|
| L48-6 (CANH) - L48-5 (CANL) | HIGH-level CAN bus wire - LOW-level CAN bus wire | Cable disconnected from negative (-) battery terminal | 54 to 69 Ω |
| L48-4 (GND) - Body ground | Ground | Always | Below 1 Ω |
| L48-3 (IG1) - L48-4 (GND) | Power source voltage | Ignition switch ON | 11 to 14 V |
| L48-2 (SLC+) - L48-1 (SLC-) | 4WD linear solenoid signal | D position, engine idling | Pulse generation (See waveform 1) |
If the result is not as specified, the 4WD ECU assembly may have a malfunction.
b.
Using an oscilloscope, check the waveform 1.
| Item | Content |
|---|---|
| Terminal No. (Symbol) | L48-2 (SLC+) - L48-1 (SLC-) |
| Tester Range | 2 V/DIV., 1 msec./DIV. |
| Condition | D position, engine idling |