Lexus ES: Terminals Of Ecu
TERMINALS OF ECU
TERMINALS OF ECU
| *a | Component without harness connected (Rack and Pinion Power Steering Gear Assembly) | - | - |
HINT:
- The 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 Techstream to check the operation of the rack and pinion power steering gear assembly and check that communication is established.
Click here
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| Terminal No. (Symbol) | Terminal Description |
|---|---|
| C37-4 (IG) | IG power source |
| C37-7 (PGND) | Power ground |
| C37-8 (PIG) | Power source |
| C37-10 (CANH) | CAN communication line |
| C37-11 (CANL) | CAN communication line |
CHECK WIRE HARNESS SIDE CONNECTOR
| *a | Front view of wire harness connector (to Rack and Pinion Power Steering Gear Assembly) | - | - |
(a) Disconnect the C37 rack and pinion power steering gear assembly.
(b) Measure the voltage and resistance according to the value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| C37-4 (IG) - Body ground | W - Body ground | IG power source | Power switch on (IG) | 8 to 16 V |
| C37-7 (PGND) - Body ground | B - Body ground | Power ground | Always | Below 1 Ω |
| C37-8 (PIG) - Body ground | W - Body ground | Power source | Always | 9 to 16 V |
READ NEXT:
Diagnosis System
DIAGNOSIS SYSTEM CHECK DLC3 (a) Check the DLC3. Click here CHECK WARNING LIGHT (a) When a problem occurs in the power steering system, the EPS warning light in the combination meter assembly comes o
Dtc Check / Clear
DTC CHECK / CLEAR CHECK DTCs (USING TECHSTREAM) (a) Turn the power switch off. (b) Connect the Techstream to the DLC3. (c) Turn the power switch on (IG). (d) Turn the Techstream on. (e) Enter the foll
Fail-safe Chart
FAIL-SAFE CHART If a problem occurs in the power steering system, the power steering assist will be stopped or the amount of power assist will be decreased to protect the system. Power Steering System
SEE MORE:
Removal
REMOVAL PROCEDURE 1. REMOVE FRONT WHEEL OPENING EXTENSION PAD RH Click here 2. REMOVE FRONT WHEEL OPENING EXTENSION PAD LH Click here 3. REMOVE NO. 1 ENGINE UNDER COVER Click here 4. REMOVE NO. 2 ENGINE UNDER COVER ASSEMBLY Click here 5. REMOVE OIL PRESSURE AND TEMPERATURE SENSOR (a)
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART LIN Communication System DTC No. Detection Item Link B1206 P/W Master Switch Communication Stop B1273 Sliding Roof ECU Communication Stop B2321 D-Door Motor ECU Communication Stop B2322 P-Door Motor ECU Communication Stop
