Lexus ES: Door Mirror ECU LH Communication Stop Mode
DESCRIPTION
Detection Item | Symptom | Trouble Area |
Door Mirror ECU LH Communication Stop Mode | Any of the following conditions are met: | -
Outer mirror control ECU assembly LH branch line or connector
-
Power source circuit of outer mirror control ECU assembly LH
-
Outer mirror control ECU assembly LH ground circuit
-
Outer mirror control ECU assembly LH
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
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 (OUTER MIRROR CONTROL ECU ASSEMBLY LH BRANCH LINE) |
(a) Disconnect the cable from the negative (-) auxiliary battery terminal.
(b) Disconnect the J28 outer mirror control ECU assembly LH connector.
(c) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection | Condition | Specified Condition | J28-9 (CANP) - J28-8 (CANN) | Cable disconnected from negative (-) auxiliary battery terminal | 54 to 69 Ω | | | *a | Front view of wire harness connector (to Outer Mirror Control ECU Assembly LH) | | |
NG | | REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (OUTER MIRROR CONTROL ECU ASSEMBLY LH) |
OK | | |
2. | CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) |
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection | Condition | Specified Condition | J28-7 (GND) - Body ground | Cable disconnected from negative (-) auxiliary battery terminal | Below 1 Ω | | | *a | Front view of wire harness connector (to Outer Mirror Control ECU Assembly LH) | | |
(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 |
J28-5 (SIG) - Body ground | Power switch on (IG) | 11 to 14 V |
J28-6 (CPUB) - Body ground | Power switch off | 11 to 14 V |
J28-14 (BDR) - Body ground | Power switch off | 11 to 14 V |
OK | | REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY LH |
NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) |
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SEE MORE:
PARTS LOCATION ILLUSTRATION *1 OUTER REAR VIEW MIRROR ASSEMBLY (DRIVER DOOR) *2 OUTER REAR VIEW MIRROR ASSEMBLY (FRONT PASSENGER DOOR) *3 OUTER MIRROR (DRIVER DOOR) *4 OUTER MIRROR (FRONT PASSENGER DOOR) *5 INNER REAR VIEW MIRROR ASSEMBLY *6 OUTER MIRROR CONTROL ECU ASS
INSPECTION PROCEDURE 1. INSPECT CYLINDER HEAD SUB-ASSEMBLY (a) Using a precision straightedge and feeler gauge, measure the warpage of the contact surfaces where the cylinder head sub-assembly contacts the cylinder block sub-assembly, intake manifold and exhaust manifold (TWC: Front Catalyst). *
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