Lexus NX: Terminals Of Ecu
TERMINALS OF ECU
| *a | Component with harness connected (Power Steering ECU Assembly) | - | - |
CHECK POWER STEERING ECU ASSEMBLY
(a) Measure the voltage and resistance according to the value(s) in the table below.
NOTICE:
When the power steering warning light (red) is illuminated due to a malfunction, the fail-safe function may cause the voltage of the power steering ECU assembly terminals to become 0 V.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| n2-1 (IG) - Body ground | R - Body ground | IG power source | Power switch on (IG) | 8 to 16 V |
| n2-6 (TS) - Body ground | G - Body ground | Test mode signal | Always | 9 to 16 V |
| n2-7 (CANH) - n2-8 (CANL) | W - B | CAN communication line | Power switch off | 54 to 69 Ω |
| z11-8 (TRQV) - z11-2 (TRQG) | R - B | Torque sensor voltage source | Power switch on (IG) | 4.5 to 5.5 V |
| z11-1 (TRQ2) - z11-2 (TRQG) | Y - B | Torque sensor 2 signal | Power switch on (READY), steering wheel not being turned (without load) | 2.3 to 2.7 V |
| Power switch on (READY), steering wheel being turned to the right with vehicle stopped | 1.2 to 2.5 V | |||
| Power switch on (READY), steering wheel being turned to the left with vehicle stopped | 2.5 to 3.8 V | |||
| z11-2 (TRQG) - Body ground | B - Body ground | Torque sensor ground | Always | Below 1 Ω |
| z11-9 (TRQ1) - z11-2 (TRQG) | W - B | Torque sensor 1 signal | Power switch on (READY), steering wheel not being turned (without load) | 2.3 to 2.7 V |
| Power switch on (READY), steering wheel being turned to the left with vehicle stopped | 1.2 to 2.5 V | |||
| Power switch on (READY), steering wheel being turned to the right with vehicle stopped | 2.5 to 3.8 V | |||
| n1-1 (PIG) - Body ground | R - Body ground | Power source | Always | 9 to 16 V |
| n1-2 (PGND) - Body ground | B - Body ground | Power ground | Always | Below 1 Ω |
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