Lexus ES: Hybrid Vehicle Control ECU Communication Stop Mode
DESCRIPTION
Detection Item | Symptom | Trouble Area |
Hybrid Vehicle Control ECU Communication Stop Mode | Any of the following conditions are met: | -
Hybrid vehicle control ECU branch line or connector
-
Power source circuit of hybrid vehicle control ECU
-
Hybrid vehicle control ECU ground circuit
-
Hybrid vehicle control 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 (HYBRID VEHICLE CONTROL ECU BRANCH LINE) |
(a) Disconnect the cable from the negative (-) auxiliary battery terminal.
(b) Disconnect the G60 hybrid vehicle control ECU connector.
(c) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection | Condition | Specified Condition | G60-25(CA1H) - G60-24(CA1L) | Cable disconnected from negative (-) auxiliary battery terminal | 54 to 69 Ω | G60-31(CA3P) - G60-30(CA3N) | Cable disconnected from negative (-) auxiliary battery terminal | 54 to 69 Ω | | | *a | Front view of wire harness connector (to Hybrid Vehicle Control ECU) | | |
NG | | REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (HYBRID VEHICLE CONTROL ECU) |
OK | | |
2. | CHECK ECU POWER SOURCE CIRCUIT |
(a) Check the ECU power source circuit.
-
for Nickel Metal Hydride Battery
Click here
-
for Lithium-ion Battery
Click here
NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) |
READ NEXT:
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SEE MORE:
PRECAUTION TROUBLESHOOTING PRECAUTION NOTICE:
Since the brake lines are critical safety related parts, be sure to disassemble and inspect the components if a brake fluid leak is found. If any abnormalities are found, replace the component with a new one.
When removing brake components, cover th
DESCRIPTION The skid control ECU (brake actuator assembly) communicates with the following ECUs and sensors via CAN communication.
ECM
TCM (ECM)
Yaw rate and acceleration sensor (airbag ECU assembly)
Steering angle sensor
Power steering ECU (rack and pinion power steering gear assembly)
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