CHECK STEERING CONTROL ECU
Tech Tips
Inspect the connectors from the back side while they are connected.
Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
---|---|---|---|---|
E82-3 (IG) - E82-7 (PGND) | G - W-B | Power supply (ECU-IG No. 4 fuse) | Engine switch on (IG) | 11 to 14 V |
E82-7 (PGND) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω |
E82-8 (PIG) - E82-7 (PGND) | B - W-B | Power supply (VGRS fuse) | Always | 11 to 14 V |
E82-10 (+BI) - E82-7 (PGND) | R - W-B | Power supply (ECU-B1 fuse) | Always | 11 to 14 V |
E83-1 (BMV) - E82-7 (PGND) | W - W-B | Steering actuator motor signal (V phase) | Engine running | Sine wave |
E83-2 (BMU) - E82-7 (PGND) | B - W-B | Steering actuator motor signal (U phase) | Engine running | Sine wave |
E83-3 (BMW) - E82-7 (PGND) | R - W-B | Steering actuator motor signal (W phase) | Engine running | Sine wave |
E83-6 (SG) - E83-8 (PGD2) | BR - W-B | Steering actuator motor signal shielded ground | Always | Below 1 Ω |
E83-8 (PGD2) - Body ground | W-B - Body ground | Steering control ECU ground | Always | Below 1 Ω |
E84-1 (+BO) - E82-7 (PGND) | R - W-B | Steering angle sensor power supply line | Always | 11 to 14 V |
E84-3 (LV) - E82-7 (PGND) | B - W-B | Power source for steering actuator lock | Engine switch on (IG) | 11 to 14 V |
E84-4 (S1) - E82-7 (PGND) | R - W-B | Steering actuator motor rotation angle sensor signal | Engine switch on (IG) | Sine wave |
E84-6 (RV) - E82-7 (PGND) | W- W-B | Steering actuator resolver excitation output voltage | Engine switch on (IG) | Sine wave |
E84-7 (SIL) - E82-7 (PGND) | R - W-B | Diagnostic communication signal | Engine switch on (IG) | Pulse generation |
E84-9 (CANH) - E84-20 (CANL) | LG - L | CAN communication | Engine switch on (IG) | Pulse generation |
E84-10 (SS1-) - E82-7 (PGND) | GR - W-B | Steering angle sensor signal | Engine running and steering wheel turned | Pulse generation |
E84-12 (LG) - E82-7 (PGND) | Y - W-B | Steering actuator lock ground | Engine running | Pulse generation |
E84-14 (S2) - E82-7 (PGND) | L - W-B | Steering actuator motor rotation angle sensor signal | Engine switch on (IG) | Sine wave |
E84-15 (RG) - E82-7 (PGND) | G - W-B | Steering actuator resolver common ground | Always | Below 1 Ω |
E84-16 (SG2+) - E82-7 (PGND) | Shielded - W-B | Shielded ground wire for steering actuator motor rotation angle sensor signal wire and control signal wire | Engine switch on (IG) | Pulse generation |
E84-19 (SS1+) - E82-7 (PGND) | L - W-B | Steering angle sensor signal | Engine running and steering wheel turned | 3 to 4 V |