Lexus ES: On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT COOLING FAN SYSTEM
CAUTION:
To prevent injury due to contact with an operating cooling fan, keep your hands and clothing away from the cooling fan when inspecting the cooling fan system.
.png)
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine / Active Test / Control the Engine Cooling Fan Duty Ratio.
Powertrain > Engine > Active Test| Tester Display |
|---|
| Control the Engine Cooling Fan Duty Ratio |
(e) Check the operation of the cooling fan while operating it using the Techstream.
OK:
| Active Test Operation | Fan Operation |
|---|---|
| 30 - 100% | Cooling fan operates |
| 0% | Cooling fan stops |
If the cooling fan motor (fan with motor assembly) does not operate, check the cooling fan circuit.
Click here .gif)
READ NEXT:
Cooling Fan Circuit
DESCRIPTION The ECM calculates an appropriate cooling fan speed based on the engine coolant temperature, air conditioning switch status, refrigerant pressure, engine speed and vehicle speed, and sends
Cooling System
On-vehicle InspectionON-VEHICLE INSPECTION CAUTION / NOTICE / HINT CAUTION: Do not remove the radiator cap sub-assembly while the engine and radiator assembly are still hot. Pressurized, hot engine c
SEE MORE:
Hybrid/EV Battery Positive Contactor Circuit Short to Ground (P0AD911)
DESCRIPTION Refer to the description for DTC P0AE411. Click here DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate P0AD911 Hybrid/EV Battery Positive Contactor Circuit Short to Ground Short to ground in the SMRB circuit: Primary circuit of SMR (+
Lost Communication with ECM/PCM "A" Missing Message (U010087)
DESCRIPTION The battery ECU assembly transmits and receives signals via CAN communication to and from the ECM. DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate U010087 Lost Communication with ECM/PCM "A" Missing Message A CAN communication error b
