Honda Accord 2008 Manual page 437

07/11/02 09:04:08 61TA0000_110_0118
PGM-FI System
DTC Troubleshooting (cont'd)
12. Check the CYL1 MISFIRE, CYL2 MISFIRE, CYL3
MISFIRE, and/or CYL4 MISFIRE in the DATA LIST
for 10 minutes with the HDS.
Does the CY L1 MISF IRE, CY L2 MISF IRE, CY L3
MISF IRE, and/ or CY L4 MISF IRE show misf ire
counts?
−
YES Go to step 13.
NO − Intermittent misfire due to poor contact at the
ignition coil connector (no misfire at this time).
Check for poor connections or loose terminals at
the ignition coil.
13. Determine which cylinder had the misfire.
Does the misf ire occur in the cylinder where the
ignition coil was exchanged?
−
YES Replace the faulty ignition coil (see page
4-21), then go to step 40.
NO − Go to step 14.
14. Turn the ignition switch to LOCK (0).
15. Exchange the spark plug from the problem cylinder
with one from another cylinder.
16. Test-drive the vehicle for several minutes in the
range of these recorded freeze data parameters:
• ENGINE SPEED
• VSS
• REL TP SENSOR
• CLV (calculated load value)
• APP SENSOR
17. Check the CYL1 MISFIRE, CYL2 MISFIRE, CYL3
MISFIRE, and/or CYL4 MISFIRE in the DATA LIST
for 10 minutes with the HDS.
Does the CY L1 MISF IRE, CY L2 MISF IRE, CY L3
MISF IRE, and/ or CY L4 MISF IRE show misf ire
counts?
YES − Go to step 18.
−
NO Intermittent misfire due to spark plug fouling
(no misfire at this time).
11-118
18. Determine which cylinder had the misfire.
Does the misf ire occur in the cylinder where the
spark plug was exchanged?
YES − Replace the faulty spark plug, then go to step
40.
−
NO Go to step 19.
19. Turn the ignition switch to LOCK (0).
20. Exchange the injector from the problem cylinder
with one from the another cylinder.
21. Start the engine, and let it idle for 2 minutes.
22. Test-drive the vehicle for several minutes in the
range of these recorded freeze data parameters:
• ENGINE SPEED
• VSS
• REL TP SENSOR
• CLV (calculated load value)
• APP SENSOR
23. Check the CYL1 MISFIRE, CYL2 MISFIRE, CYL3
MISFIRE, and/or CYL4 MISFIRE in the DATA LIST
for 10 minutes with the HDS.
Does the CY L1 MISF IRE, CY L2 MISF IRE, CY L3
MISF IRE, and/ or CY L4 MISF IRE show misf ire
counts?
YES − Go to step 24.
NO − Intermittent misfire due to bad contact at the
injector connector (no misfire at this time). Check
for poor connections or loose terminals at the
injector.
24. Determine which cylinder had the misfire.
Does the misf ire occur in the cylinder where the
injector was exchanged?
YES − Replace the faulty injector (see page 11-223),
then go to step 40.
−
NO Go to step 25.