Lexus ES: Clearance Warning ECU Communication Stop Mode
DESCRIPTION
Detection Item | Symptom | Trouble Area |
Clearance Warning ECU Communication Stop Mode | Any of the following conditions are met: | -
Clearance warning ECU assembly branch line or connector
-
Power source circuit of clearance warning ECU assembly
-
Clearance warning ECU assembly ground circuit
-
Clearance warning 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 (CLEARANCE WARNING ECU ASSEMBLY BRANCH LINE) |
(a) Disconnect the cable from the negative (-) battery terminal.
(b) Disconnect the N41 clearance warning ECU assembly connector.
(c) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection | Condition | Specified Condition | N41-17 (R1) - N41-18 (R2) | Cable disconnected from negative (-) battery terminal | 54 to 69 Ω | | | *a | Front view of wire harness connector (to Clearance Warning ECU Assembly) | | |
NG | | REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (CLEARANCE WARNING 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 | N41-30 (E) - Body ground | Cable disconnected from negative (-) battery terminal | Below 1 Ω | | | *a | Front view of wire harness connector (to Clearance Warning 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 |
N41-1 (IG) - Body ground | Engine switch on (IG) | 11 to 14 V |
OK | | REPLACE CLEARANCE WARNING ECU ASSEMBLY |
NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) |
READ NEXT:
DESCRIPTION Detection Item Symptom Trouble Area Skid Control ECU Communication Stop Mode Any of the following conditions are met:
Communication stop for "Skid Control (ABS/VSC/TRAC)" i
DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area Note B1003 ECU Malfunction A malfunction in the non-volatile storage of the central gateway ECU (network gate
DIAGNOSTIC TROUBLE CODE CHART Diagnostic Trouble Code Chart DTC No. Detection Item Trouble Area Link B1003 ECU Malfunction Central gateway ECU (network gateway ECU)
SEE MORE:
CAUTION / NOTICE / HINT HINT:
Use the following procedure to troubleshoot the telematics system.
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
NEXT 2. CUSTOMER PROBLEM ANALYSIS HINT:
In troubleshooting, check that the problem symptoms h
DESCRIPTION The ECM monitors its internal operation. If it detects a malfunction, the electronic throttle motor circuit inside the ECM is shut off to ensure the safety of the vehicle. DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note P16B09F Actuator Cu
© 2016-2024 Copyright www.lexguide.net