DTC Logic
DTC | Trouble diagnosis name | DTC detecting condition | Possible causes |
U0073 |
Control Module Communication Bus "A" Off |
When the ignition switch is ON, TCM detects a bus-off error continuously for 2 seconds or more. | Harness or connector (CAN communication line is open or shorted) |
DTC CONFIRMATION PROCEDURE
1.PREPARATION BEFORE WORK
If another "DTC CONFIRMATION PROCEDURE" occurs just before, turn the ignition switch OFF and wait for at least 10 seconds, then perform the next test.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
Is "U0073" detected?
YES >> Go to TM, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
For the diagnosis procedure, refer to LAN, "Trouble Diagnosis Flow Chart".
Work Procedure INSPECTION Inspect the amount of engine oil. Replenish the engine oil if necessary. Refer to LU, "Inspection". Drive for about 10 minutes to warm up the vehicle so ...
DTC Logic DTC DETECTION LOGIC DTC Trouble diagnosis name DTC detection condition Possible causes U0100 Lost Communication With ECM/PCM "A" When the ignition switch ...
Engine control system
ENGINE CONTROL SYSTEM : Component Parts Location
1. Mass air flow sensor
(with intake air temperature sensor)
2. Electric throttle control actuator
(with built in throttle position sensor
and throttle control motor)
3. EVAP canister purge volume control
solenoid valve
4. Cooling fan mot ...
Exhaust valve timing control
Exhaust valve timing control : system diagram
Exhaust valve timing control : system description
INPUT/OUTPUT SIGNAL CHART
Sensor
Input signal to ECM
ECM function
Actuator
Crankshaft position sensor (POS)
Engine speed*1
Piston position
Exhaust valve timing c ...