TERMINALS OF ECU
| *a | Component with harness connected (Rack and Pinion Power Steering Gear Assembly) |
- | - |
Tech Tips
The power steering ECU (rack and pinion power steering gear assembly) uses waterproof connectors. Therefore, voltage or waveforms cannot be checked with the connectors connected to the vehicle.
Use the Data List and Active Test on the GTS to check the operation of the rack and pinion power steering gear assembly and check that communication is established.
| Terminal No. (Symbol) | Wiring Color | Terminal Description |
|---|---|---|
| C1-4 (IG) | R | IG power source |
| C1-5 (CA2H) | G | High-level CAN line |
| C1-6 (CA2L) | W | Low-level CAN line |
| C1-7 (PGND) | W | Power ground |
| C1-8 (PIG) | B | Power source |
| C1-10 (CANH) | B | High-level CAN line |
| C1-11 (CANL) | W | Low-level CAN line |
CHECK WIRE HARNESS SIDE CONNECTOR
| *a | Front view of wire harness connector (to Rack and Pinion Power Steering Gear Assembly) |
- | - |
Disconnect the C1 rack and pinion power steering gear assembly.
Measure the voltage and resistance according to the value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| C1-4 (IG) - Body ground | R - Body ground | Power ground | Power switch on (IG) | 8 to 16 V |
| C1-7 (PGND) - Body ground | W - Body ground | Power source | Always | Below 1 Ω |
| C1-8 (PIG) - Body ground | B - Body ground | IG power source | Always | 9 to 16 V |