Honda Accord 2008 Manual page 459

07/11/02 09:05:02 61TA0000_110_0140
PGM-FI System
DTC Troubleshooting (cont'd)
12. Do the ETCS TEST in the INSPECTION MENU with
the HDS.
Is the T HROT T LE ACT UAT OR CONT ROL
V ALV E normal?
YES − Go to step 13.
−
NO Replace the throttle body (see page 11-388),
then go to step 25.
13. Start the engine. Hold the engine speed at
3,000 rpm without load (A/T in P or N, M/T in
neutral) until the radiator fan comes on, then let it
idle.
14. Monitor the ENGINE SPEED in the DATA LIST with
the HDS, and hold the engine speed at 2,500 rpm
for at least 30 seconds.
15. While holding the engine speed at 2,500 rpm, check
the MAF SENSOR in the DATA LIST with the HDS.
Is there about 5.6 7 .8 gm/ s ( M/ T ) or
6.5 9.1 gm/ s ( A/ T )? −
−
YES Go to step 16.
NO − Replace the MAF sensor/IAT sensor (see page
11-227), then go to step 25.
16. Turn the ignition switch to LOCK (0).
17. Drain the coolant (see page 10-6).
18. Remove ECT sensor 1 (see page 11-228), and ECT
sensor 2 (see page 11-228).
19. Allow the sensors to cool to ambient temperature.
20. Note the ambient temperature.
21. Connect ECT sensor 1 and ECT sensor 2 to their 2P
connectors, but do not install them.
22. Turn the ignition switch to ON (II).
23. Note the value of ECT SENSOR 1 and ECT SENSOR
2 quickly in the DATA LIST with the HDS.
11-140
−
24. Compare the value of ECT SENSOR 1 and the
ambient temperature, and the value of ECT
SENSOR 2 and the ambient temperature
individually.
Does either sensor dif f er more than 5.4 °F ( 3 °C)
f rom the ambient temperature?
−
YES Replace the sensor that differed more than
5.4 °F (3 °C) from the ambient temperature, then go
to step 25.
NO − Check and repair any problems with the
following items, then go to step 25.
• Engine compression and cylinder leakdown
• VTEC system
• Engine oil
• A/C system
• Power steering
25. Turn the ignition switch to ON (II).
26. Reset the ECM/PCM with the HDS.
27. Do the ECM/PCM idle learn procedure (see page
11-343).
28. Let the engine cool until the value of ECT SENSOR
1 is 122 °F (50 °C) or less.
29. Start the engine, and let it idle for 10 seconds or
more.
30. Check for Temporary DTCs or DTCs with the HDS.
Is DT C P050B indicated?
−
YES Check for poor connections or loose
terminals at the CKP sensor, the throttle body, the
MAF sensor/IAT sensor, ECT sensor 1, ECT sensor
2, and the ECM/PCM, then go to step 1.
− Go to step 31.
NO