Note. To carry out the check, you will need special tools: a device for measuring compression (070AJ-RBD0100)
Note. After completing this procedure, you must select the operation «Zeroing data» («Reset») engine control computer, otherwise the ECM will continue to shut down the injectors. Select «Zeroing data» («Reset») ECM computer using the Honda diagnostic system (HDS).
1. Warm up the engine to normal operating temperature (cooling fan should turn on).
2. Turn the ignition key to position «OFF».
3. Connect the HDS diagnostic system to the data connector (DLC)
4. Switch on the ignition by turning the key to position «ON» (II).
5. Verify that the HDS is communicating with the vehicle and the ECM. If not, troubleshoot the DLC circuit.
6. Choose a system «DIESEL, INSPECTION», then «ALL INJECTORS OFF» in the HDS diagnostic system.
7. Remove the engine cover.
8. Remove the four glow plugs.
9. Connect a pressure gauge to the glow plug hole.
10. Turn the engine over with the starter and measure the compression.
Compression pressure: above 2.4 MPa.
11. Measure the compression in the remaining cylinders.
Maximum dispersion: no 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.
- Broken or worn valves and seats.
- Cylinder head gasket failure.
- Broken or worn piston rings.
- Damaged or worn piston or cylinder bore.
13. Install four glow plugs.
14. Select «Zeroing data (Reset) ECM computer» to stop the execution of the function «ALL INJECTORS OFF» (All Injectors Disabled) in the HDS diagnostic system.
15. Install the engine cover.