Lexus ES: Restraints Occupant Classification System Module Communication Stop Mode
DESCRIPTION
Detection Item | Symptom | Trouble Area |
Restraints Occupant Classification System Module Communication Stop Mode | Any of the following conditions are met: | -
Occupant detection ECU branch line or connector
-
Power source circuit of occupant detection ECU
-
Occupant detection ECU ground circuit
-
Occupant detection ECU
|
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 (OCCUPANT DETECTION ECU BRANCH LINE) |
(a) Disconnect the cable from the negative (-) battery terminal.
(b) Disconnect the U28 occupant detection ECU connector.
(c) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection | Condition | Specified Condition | U28-5 (CANH) - U28-4 (CANL) | Cable disconnected from negative (-) battery terminal | 54 to 69 Ω | | | *a | Front view of wire harness connector (to Occupant Detection ECU) | | |
NG | | REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (OCCUPANT DETECTION ECU) |
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 | U28-10 (GND) - Body ground | Cable disconnected from negative (-) battery terminal | Below 1 Ω | | | *a | Front view of wire harness connector (to Occupant Detection ECU) | | |
(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 |
U28-6 (IG2) - Body ground | Engine switch on (IG) | 11 to 14 V |
NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) |
READ NEXT:
DESCRIPTION Detection Item Symptom Trouble Area Rear Television Camera Communication Stop Mode Any of the following conditions are met:
Communication stop for "Parking Assist Monitor S
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
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
SEE MORE:
MONITOR DESCRIPTION This monitor will run when the engine is started at an engine coolant temperature of -10 to 50°C (14 to 122°F). The DTC is stored after the engine idles for 13 seconds (2 trip detection logic). The DTC is designed to monitor the ignition timing at cold start. When the engine is
DESCRIPTION DTC B2251 is output if there is a malfunction in the half latch switch circuit of the luggage door closer assembly. DTC No. Detection Item DTC Detection Condition Trouble Area B2251 PBD/PTL Closer Switch When luggage door is opening or closing, malfunction occurs in half
© 2016-2024 Copyright www.lexguide.net