Lexus ES: Motor Generator Control ECU Communication Stop Mode
DESCRIPTION
| Detection Item | Symptom | Trouble Area |
|---|---|---|
| Motor Generator Control ECU Communication Stop Mode | Any of the following conditions are met:
|
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
NOTICE:
-
Because the order of diagnosis is important to allow correct diagnosis, make sure to begin troubleshooting using How to Proceed with Troubleshooting when CAN communication system related DTCs are output.
Click here
.gif)
- Before measuring the resistance of the CAN bus, turn the power switch off and leave the vehicle for 1 minute or more without operating the key or any switches, or opening or closing the doors. After that, disconnect the cable from the negative (-) auxiliary battery terminal and leave the vehicle for 1 minute or more before measuring the resistance.
-
After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.
Click here
-
After performing repairs, perform the DTC check procedure and confirm that the DTCs are not output again.
DTC check procedure: Turn the power switch on (IG) and wait for 1 minute or more. Then operate the suspected malfunctioning system and drive the vehicle at 60 km/h (37 mph) or more for 5 minutes or more.
-
After the repair, perform the CAN bus check and check that all the ECUs and sensors connected to the CAN communication system are displayed as normal.
Click here
- Inspect the fuses for circuits related to this system before performing the following procedure.
HINT:
- Before disconnecting related connectors for inspection, push in on each connector body to check that the connector is not loose or disconnected.
- When a connector is disconnected, check that the terminals and connector body are not cracked, deformed or corroded.
PROCEDURE
| 1. | CHECK FOR OPEN IN CAN BUS LINES (INVERTER WITH CONVERTER ASSEMBLY BRANCH LINE) |
(a) Disconnect the cable from the negative (-) auxiliary battery terminal.
(b) Disconnect the A58 inverter with converter assembly connector.
| (c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
| NG | .gif) | REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY) |
|
.gif)
| 2. | CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) |
| (a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
(b) Reconnect the cable to the negative (-) auxiliary battery terminal.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A58-5 (+B2) - Body ground | Power switch on (IG) | 11 to 14 V |
| A58-6 (+B) - Body ground | Power switch on (IG) | 11 to 14 V |
| A58-12 (IGCT) - Body ground | Power switch on (IG) | 11 to 14 V |
| OK | | REPLACE MG ECU (REPLACE INVERTER WITH CONVERTER ASSEMBLY) |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) |
READ NEXT:
Millimeter Wave Radar Sensor Communication Stop Mode
DESCRIPTION Detection Item Symptom Trouble Area Millimeter Wave Radar Sensor Communication Stop Mode Any of the following conditions are met:
Communication stop for "Front Radar" is in
Headup Display Communication Stop Mode
DESCRIPTION Detection Item Symptom Trouble Area Headup Display Communication Stop Mode Any of the following conditions are met:
Communication stop for "Head Up Display" is indicated on
Door Mirror ECU RH Communication Stop Mode
DESCRIPTION Detection Item Symptom Trouble Area Door Mirror ECU RH Communication Stop Mode Any of the following conditions are met:
Communication stop for "Front Door RH/R-Mirror (FR-D
SEE MORE:
All Power Windows do not Operate with Driver Side Door Key Cylinder or Wireless Transmitter
DESCRIPTION Wireless Transmitter-linked Function
When a key switch is pushed: 1) the door control receiver receives the wireless door lock signal; 2) the door control receiver sends a signal to the main body ECU (multiplex network body ECU) through the certification ECU (smart key ECU assembly);
Installation
INSTALLATION CAUTION / NOTICE / HINT NOTICE:
Immediately after installing the brake pads, the braking performance may be reduced. Always perform a road test in a safe place while paying attention to the surroundings.
After replacing the rear disc brake pads, the brake pedal may feel soft due to
