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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READ NEXT:
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
SEE MORE:
Open Circuit in ABS Motor Relay Circuit (C146C,C146D)
DESCRIPTION The ABS motor relay is built into the brake booster with master cylinder assembly. During ABS, TRAC, VSC, brake hold, secondary collision brake or brake assist operation, the skid control ECU (brake booster with master cylinder assembly) turns on the ABS motor relay to run the pump motor
Check For Intermittent Problems
CHECK FOR INTERMITTENT PROBLEMS NOTICE:
If the vehicle or vehicle controls are operated (for example, during initial inspection when the vehicle is brought in for repair) before operation history has been read and saved, the operation history information could be lost.
The Operation History fun
