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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