Lexus ES: Center Airbag Sensor Communication Stop Mode
DESCRIPTION
Detection Item | Symptom | Trouble Area |
Center Airbag Sensor Communication Stop Mode | Any of the following conditions are met: | -
Airbag ECU assembly main line or connector
-
Power source circuit of airbag ECU assembly
-
Airbag ECU assembly ground circuit
-
Airbag ECU assembly
|
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 (AIRBAG ECU ASSEMBLY MAIN LINE) |
(a) Disconnect the cable from the negative (-) battery terminal.
(b) Disconnect the G64 airbag ECU assembly connector.
(c) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection | Condition | Specified Condition | G64-26 (CANH) - G64-27 (CANL) | Cable disconnected from negative (-) battery terminal | 108 to 132 Ω | | | *a | Front view of wire harness connector (to Airbag ECU Assembly) | | |
NG | | REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (AIRBAG ECU ASSEMBLY) |
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 | G64-32 (E2) - Body ground | Cable disconnected from negative (-) battery terminal | Below 1 Ω | G64-33 (E1) - Body ground | Cable disconnected from negative (-) battery terminal | Below 1 Ω | | | *a | Front view of wire harness connector (to Airbag ECU Assembly) | | |
(b) Reconnect the cable to the negative (-) battery terminal.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection | Condition | Specified Condition |
G64-36 (IG2) - Body ground | Engine switch on (IG) | 11 to 14 V |
NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) |
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SEE MORE:
The RCTA function uses the BSM
rear side radar sensors installed on
the inner side of the rear bumper.
This function is intended to assist
the driver in checking areas that
are not easily visible when backing
up.
System components
Meter control switches
Turn the RCTA function on/off
REMOVAL CAUTION / NOTICE / HINT NOTICE: This procedure includes the removal of small-head bolts. Refer to Small-Head Bolts of Basic Repair Hint to identify the small-head bolts. Click here PROCEDURE 1. REMOVE NO. 1 ENGINE COVER SUB-ASSEMBLY Click here 2. REMOVE CAM TIMING OIL CONTROL SOLENOID
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