Question about 2003 Mitsubishi Galant
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Dec 30, 2016 | 2007 Chevrolet Trailblazer
??There are two types of DTC's, 1 trip DTC's and 2
??A 1 trip DTC is for a condition that requires
immediate attention such as a catalyst damaging
??A 2 Trip DTC is one that a condition must be found
during 2 consecutive trips such as an EGR fault.
??Most Monitors do not set a DTC and light the MIL
when a vehicle fails a test for the first time during a
DRIVE CYCLE. If a test is failed on a second
consecutive DRIVE CYCLE the MIL will light and a
DTC is stored in the vehicles powertrain control
Feb 07, 2016 | Cars & Trucks
Inspect the transmission fluid for debris.
DTC P0742 Torque Converter Clutch System Stuck ON Step
Was the Powertrain On-Board Diagnostic (OBD) System Check performed?
Go to Step 2
Go to Powertrain On Board Diagnostic (OBD) System Check
Install the Scan Tool .
With the engine OFF, turn the ignition switch to the RUN position.
Important: Before clearing the DTCs, use the scan tool in order to record the Freeze Frame and Failure Records for reference. The Clear Info function will erase the data. Record the DTC Freeze Frame and Failure Records, then clear the DTC.
Start and run the vehicle.
Select TCC Slip Speed on the scan tool.
With the transmission in D4, drive the vehicle through the 1-2 upshift.
In second gear is the TCC Slip Speed within the range specified?
-20 to +50 RPM
Go to Step 3
Go to Diagnostic Aids
Inspect for the following conditions:
The TCC apply valve stuck ON because of sediment or damage.
The TCC Sol. Valve Assy. stuck ON because of sediment or damage. Refer to Control Valve Body Assembly Inspection, in Unit Repair.
Was a condition found and corrected?
Go to Step 4
In order to verify your repair, perform the following procedure:
Using the scan tool, clear DTCs.
Operate the vehicle under the following conditions:
• The gear range is D2, D3 or D4.
• The commanded gear is not 1st.
• The engine speed is greater than 500 RPM for 5 seconds.
• Not in fuel shut off.
• The engine torque is 95-270 N·m (70-200 lb ft).
• The throttle position is 14-50%.
• The PCM commands the TCC OFF.
• The TCC slip speed is 150-2000 RPM for 5 seconds.
• The engine speed is 800-4000 RPM.
• The vehicle speed is 32-112 km/h (20-70 mph).
• The speed ratio is 0.65-1.18.
• The last gear change occurred more than 3 seconds ago.
Select Specific DTC. Enter DTC P0742.
Has the test run and passed?
Begin the diagnosis again. Go to Step 1
Oct 07, 2015 | Pontiac Cars & Trucks
Sep 01, 2014 | Volvo Cars & Trucks
The only way to find out why the engine management light is on is to have a scan of the engine management control module carried out using an appropriate code reader, this will give you the standard EOBD codes for example a catalyst efficiency code would show P0420. If you want to do this on a DIY basis then cheap code readers are available on the internet for around $75.00, these code readers also reset the light after the fault has been fixed. if this was helpful please leave me good feedback
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