Note: You must reset the Engine Control Module (ECM) after completing this procedure, otherwise the ECM will continue to stop the injectors. Reset the ECM using the Honda Diagnostic System (HDS).
1. Warm up the engine to normal operating temperature (the electric fan of the cooling system should turn on).
2. Turn the ignition key to the "OFF" position.
3. Connect the HDS to the data link connector (DLC)
4. Turn the ignition on by turning the key to the "ON" (II) position.
5. Verify that the HDS is communicating with the vehicle and the ECM. If not, troubleshoot the DLC circuit.
6. Select functions "PGM-FI, INSPECTION", then "ALL INJECTORS OFF" in the HDS diagnostic system.
7. Remove the four front ignition coils.
8. Remove the four front spark plugs.
9. Connect the pressure measuring device to the spark plug hole.
Note: Use a pressure measuring device (between the edge and the flange) no more than 23 mm.
10. Open the throttle valve fully, crank the engine with the starter and measure the compression value.
Compression pressure: above 980 kPa.
11. Measure the compression in the remaining cylinders.
Maximum spread: Not more than 200 kPa.
12. If the compression value is outside the range specified in the specifications, check the following items and then repeat the compression measurement.
- Glow plug is loosely tightened.
- Damage or wear of valves and seats.
- Cylinder head gasket failure.
- Broken or worn piston rings.
- Damage or wear to piston or cylinder bore.
13. Select " Reset Data" ("Reset") of the ECM computer to stop the function from running "ALL INJECTORS OFF" (All injectors are disabled) in the HDS diagnostic system.