Honda Ascot OBD Check Engine Cracking
The Honda Ascot is a compact sedan manufactured by Honda and marketed only in Japan from 1989 to 1997. The first generation produced two versions based on the Honda Accord CB series called the Ascot and from 1993 to 1996 a “pillared hardtop” called the Ascot Innova. The Innova shared much of its mechanicals with the European-market Accord manufactured at the Honda UK facility in Swindon, England, and was essentially the badge engineered Rover 600. The second generation was a platform improvement, shared with the Japan-only sedan called the Honda Rafaga. The “Ascot” name was chosen with reference to the Ascot Racecourse and Ascot tie, in order to add the model an alleged air of class and elegance.
PLEASE SELECT THE OBD SOCKET OF YOUR CAR BELOW AND FOLLOW THE JUMPER SETTINGS.
|Year range: 1989 to 2001
Locations: Under the passengers seat.
Year range: 1998 to 2009
Locations: Under the drivers side dash panel.
PLEASE NOTE:If after following the instructions below the Check Engine Light does not flash it either means there are no fault codes or there is a connection error. To test connection, remove the TPS and run the engine then recheck codes.
1. If possible run the engine to bring the oxygen sensor up to operating temperature then switch the engine off.
2. Connect the terminals using your own jumper wire, as shown in the diagram above.
3. Turn ignition ON, the Check Engine Light (CEL) should be flashing on your car dashboard.
4. Read codes as described in the Code Format Description below.
Code Format Diagram
• Each code is made up of two series of flashes.
• The long flashes indicate the ‘tens’ digits.
• The short flashes indicate the ‘ones’ digits.
• A long pause separates each code sequence.
• Code Format Diagram shows above is code No. 12.
• If nolongflashes are observed then the code is a straight count of short flashes. i.e. 4 flashes = code 4.
|ECU||ECU Bad, or ECU Fuse Blown||Check ECU Fuse, Check Eeprom is in socket correctly and not loose|
|1||Oxygen Sensor||Loose Wiring, Bad Sensor||Check wiring, check sensor *|
|3||Map Sensor||Loose Wiring, Bad Sensor||Make sure sensor is plugged in and wiring is correct|
|4||CKP (Crankshaft Position Sensor)||Loose Wiring||Check that distributor plugs are connected and wiring is not loose|
|6||Coolant Temperature||Loose Wiring, Bad Sensor||Check that plug is connected and wiring is not loose|
|7||TPS (Throttle Position Sensor)||Loose Wiring, Bad Sensor||Make sure sensor is plugged in and wiring is correct|
|8||TDC Position (Top Dead Center)||Loose Wiring||Check that distributor plugs are connected and wiring is not loose|
|9||CYP (No. 1 Cylinder Position)||Loose Wiring||Check that distributor plugs are connected and wiring is not loose|
|10||IAT (Intake Air Temperature)||Incorrect Harness Plug, Bad Sensor||Check that correct sensor plug is connected, Replace Sensor|
|12||Exhaust Gas Recirculation||Incorrect Harness Plug, Bad Sensor||Check wiring, check sensor *|
|13||Barometric Pressure||Bad Sensor||Check wiring, check sensor *|
|14||IACV (Idle Air Control Valve)||Incorrect Harness Plug, Bad Sensor||Check that correct sensor plug is connected, Replace Sensor|
|15||Ignition Output Signal||Loose Wiring, Bad Sensor||Check wiring, most likely wiring will be the issue|
|16||Fuel Injector||Loose Wiring||Check wiring, most likely wiring will be the issue|
|17||VSS (Vehicle Speed Sensor)||Loose Wiring, Bad Sensor||Check that plug is connected and wiring is not loose|
|19||Lock-Up Control Solenoid||Loose Wiring, Bad Sensor||Check wiring, check sensor *|
|20||ELD (Electronic Load Detector)||Loose Wiring, Bad Sensor||Check wiring, check sensor *|
|21||VTEC Solenoid||Loose Wiring, Bad Sensor||This is common, make wire is ran to correct ecu pin location (pin D14)|
|22||VTEC Pressure Switch||Loose Wiring, No Oil Pressure||Check wiring, check sensor *|
|23||Knock Sensor||Loose Wiring, Bad Sensor||Check wiring, check sensor *|
|4||Oxygen Sensor Heater Circuit||Loose Wiring, Bad Sensor||Check wiring, check sensor *|
|43||Fuel System Supply||Low Fuel Pressure, Vacuum Leaks||Make sure fuel pressure is adequate at idle (40-50psi base), check for vacuum leaks|
- After the faults have been rectified, trouble codes can be erased by using a Scan Tool connected to the data link connector (DLC) or as follows:
- Switch ignition OFF.
- Remove radio fuse (7.5A) from underhood fusebox for 10 seconds minimum
- Reinstall fuse.
- Repeat checking procedure to ensure no data remains in ECM fault memory.
NEVERMIND THE TAGS BELOW.