Lexus ES: Terminals Of Ecu
TERMINALS OF ECU
CHECK SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY)
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(a) Disconnect the P22 sliding roof ECU (sliding roof drive gear sub-assembly) connector.
(b) Measure the resistance and voltage according to the value(s) in the table below.
HINT:
Measure the values on the wire harness side with the connector disconnected.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| P22-1 (B) - P22-2 (E) | B - W-B | Auxiliary battery power supply | Power switch off | 11 to 14 V |
| P22-2 (E) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω |
(c) Reconnect the P22 sliding roof ECU (sliding roof drive gear sub-assembly) connector.
(d) Measure the voltage according to the value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| P22-10 (OPN) - P22-2 (E) | W - W-B | Sliding roof motor open | Power switch on (IG), OPEN switch on | Below 1 V |
| P22-10 (OPN) - P22-2 (E) | W - W-B | Sliding roof motor open | Power switch on (IG), OPEN switch off | 11 to 14 V |
| P22-8 (CLS) - P22-2 (E) | SB - W-B | Sliding roof motor close | Power switch on (IG), CLOSE switch on | Below 1 V |
| P22-8 (CLS) - P22-2 (E) | SB - W-B | Sliding roof motor close | Power switch on (IG), CLOSE switch off | 11 to 14 V |
| P22-5 (UP) - P22-2 (E) | R - W-B | Sliding roof motor up | Power switch on (IG), UP switch on | Below 1 V |
| P22-5 (UP) - P22-2 (E) | R - W-B | Sliding roof motor up | Power switch on (IG), UP switch off | 11 to 14 V |
| P22-9 (DWN) - P22-2 (E) | LG - W-B | Sliding roof motor down | Power switch on (IG), DOWN switch on | Below 1 V |
| P22-9 (DWN) - P22-2 (E) | LG - W-B | Sliding roof motor down | Power switch on (IG), DOWN switch off | 11 to 14 V |
CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
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Diagnosis System
DIAGNOSIS SYSTEM DESCRIPTION (a) Sliding roof system data and Diagnostic Trouble Codes (DTCs) can be read through the vehicle Data Link Connector 3 (DLC3). When the system seems to be malfunctioning,
Dtc Check / Clear
DTC CHECK / CLEAR CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / Sliding Roof / Troub
Data List / Active Test
DATA LIST / ACTIVE TEST DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. Th
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Fail-safe Chart
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Components
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