Acura CSX. Instruction — page 116

YES

NO

YES

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YES

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YES

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YES

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11-138

PGM-FI System

6. Let the engine cool until the value of ECT SENSOR

1 is 50 °C (122 °F) or less.

7. Clear the DTC with the HDS.

8. Start the engine, and let it idle for 10 seconds or

more.

9. Monitor the OBD STATUS for DTC P050B in the

DTCs MENU with the HDS.

Go to step 10.

If the screen indicates PASSED, intermittent

failure, the system is OK at this time. Check for
poor connections or loose terminals at the throttle
body, the CKP sensor, the MAF sensor/IAT sensor,
ECT sensor 1, ECT sensor 2, and the ECM/PCM. If
the screen indicates EXECUTING, keep idling until
a result comes on. If the screen indicates OUT OF
CONDITION, go to step 6.

10. Check the ignition timing (see page 4-20).

Go to step 12.

Go to step 11.

11. Check for damage at the CKP sensor (see page

11-222) and the CKP sensor pulser plate (see page
6-34).

Replace the CKP sensor (see page 11-222)

and/or the CKP sensor pulser plate (see page 6-34),
then go to step 6.

Go to step 32.

12. Do the ETCS TEST in the INSPECTION MENU with

the HDS.

Go to step 13.

Replace the throttle body; K20Z2 engine

(see page 11-348), K20Z3 engine (see page 11-349),
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.

Go to step 16.

Replace the MAF sensor/IAT sensor (see page

11-224), then go to step 25.

16. Turn the ignition switch to LOCK (0).

17. Drain the coolant (see page 10-8).

18. Remove ECT sensor 1 (see page 11-225), and ECT

sensor 2 (see page 11-225).

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 on the engine.

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.

Does the scr een indicate F AILED?

Is the ignition timing OK ?

Is the CK P sensor and/ or the CK P sensor pulser
plate damaged?

Is the T HROT T LE ACT UAT OR CONT ROL
V ALV E nor mal?

Is ther e about 6.0

8.6 ( K 20Z 2 engine) or

5.7

8.3 ( K 20Z 3 engine) gm/ s?

08/08/21 14:18:56 61SNR030_110_0138

YES

NO

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11-139

24. Compare the value of ECT SENSOR 1 and the

ambient temperature, and the value of ECT
SENSOR 2 and the ambient temperature
individually.

Replace the sensor that differed more than

3 °C (5.4 °F) from the ambient temperature, then go
to step 25.

Check and repair any problems with the

following items. Repair or replace them if needed,
then go to step 25. If every item is OK, go to step
32.

• 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

11-310).

28. Let the engine cool until the value of ECT SENSOR

1 is 50 °C (122 °F) 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.

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.

31. Monitor the OBD STATUS for DTC P050B in the

DTCs MENU with the HDS.

Troubleshooting is complete. If any other

Temporary DTCs or DTCs were indicated in step 30,
go to the indicated DTC’s troubleshooting.

If the screen indicates FAILED, 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. If the screen indicates EXECUTING, keep
idling until a result comes on. If the screen
indicates OUT OF CONDITION, go to step 28.

32. Update the ECM/PCM if it does not have the latest

software (see page 11-227), or substitute a known-
good ECM/PCM (see page 11-7).

33. Let the engine cool until the value of ECT SENSOR

1 is 50 °C (122 °F) or less.

34. Start the engine, and let it idle for 10 seconds or

more.

35. Check for Temporary DTCs or DTCs with the HDS.

Check for poor connections or loose

terminals at the CKP sensor, the throttle body, the
MAF/IAT sensor, ECT sensor 1, ECT sensor 2, and
the ECM/PCM. If the ECM/PCM was updated,
substitute a known-good ECM/PCM (see page 11-7),
then go to step 33. If the ECM/PCM was substituted,
go to step 1.

Go to step 36.

Does either sensor dif f er mor e than 3 °C ( 5.4 °F )
f r om the ambient temper atur e?

Is DT C P050B indicated?

Does the scr een indicate PASSED?

Is DT C P050B indicated?

08/08/21 14:18:56 61SNR030_110_0139

SNR9AA7K72100090562FAAT00

YES

NO

YES

NO

DTC P0562:

11-140

11-140

PGM-FI System

36. Monitor the OBD STATUS for DTC P050B in the

DTCs MENU with the HDS.

If the ECM/PCM was updated,

troubleshooting is complete. If the ECM/PCM was
substituted, replace the original ECM/PCM
(see page 11-228). If any other Temporary DTCs or
DTCs were indicated in step 35, go to the indicated
DTC’s troubleshooting.

If the screen indicates FAILED, check for poor

connections or loose terminals at the CKP sensor,
the throttle body, the MAF/IAT sensor, ECT
sensor 1, ECT sensor 2, and the ECM/PCM. If the
ECM/PCM was updated, substitute a known-good
ECM/PCM (see page 11-7), then go to step 33. If the
ECM/PCM was substituted, go to step 1. If the
screen indicates EXECUTING, keep idling until a
result comes on. If the screen indicates OUT OF
CONDITION, go to step 33.

NOTE:

• Before you troubleshoot, record all freeze data and

any on-board snapshot, and review the general
troubleshooting information (see page 11-3).

• If any high current load accessories are installed, this

DTC can be set.

• If DTC P16BB and/or P16BC is stored at the same time

as DTC P0562, troubleshoot DTC P16BB and/or P16BC
first, then recheck for DTC P0562.

1. Turn the ignition switch to ON (II).

2. Clear the DTC with the HDS.

3. Start the engine.

4. Check under these conditions:

• A/C on
• Temperature control at maximum cool
• Blower fan at maximum speed
• Rear window defogger on
• Headlights on high beam

5. Hold the engine speed at 2,000 rpm (A/T in P or N,

M/T in neutral) for 1 minute.

6. Check for Temporary DTCs or DTCs with the HDS.

Replace the alternator (see page 4-34), then

go to step 7.

Intermittent failure, the system is OK at this

time. Check for poor connections or loose terminals
at the alternator and the under-hood fuse/relay box,
and check the battery performance (see page
22-67).

Charging System Low Voltage

Does the scr een indicate PASSED?

Is DT C P0562 indicated?

08/08/21 14:18:57 61SNR030_110_0140

SNR9AA7K72100090563FAAT00

YES

NO

YES

NO

DTC P0563:

11-141

11-141

7. Turn the ignition switch to ON (II).

8. Reset the ECM/PCM with the HDS.

9. Do the ECM/PCM idle learn procedure (see page

11-310).

10. Start the engine.

11. Check under these conditions:

• A/C on
• Temperature control at maximum cool
• Blower fan at maximum speed
• Rear window defogger on
• Headlights on high beam

12. Hold the engine speed at 2,000 rpm (A/T in P or N,

M/T in neutral) for 1 minute.

13. Check for Temporary DTCs or DTCs with the HDS.

Check for poor connections or loose

terminals at the alternator and the under-hood
fuse/relay box, then go to step 1.

Troubleshooting is complete. If any other

Temporary DTCs or DTCs are indicated, go to the
indicated DTC’s troubleshooting.

NOTE: Before you troubleshoot, record all freeze data
and any on-board snapshot, and review the general
troubleshooting information (see page 11-3).

1. Turn the ignition switch to ON (II).

2. Clear the DTC with the HDS.

3. Turn the ignition switch to LOCK (0).

4. Wait 10 seconds.

5. Turn the ignition switch to ON (II).

6. Check for Temporary DTCs or DTCs with the HDS.

Go to step 7.

Intermittent failure, the system is OK at this

time. Check for poor connections or loose terminals
at PGM-FI main relay 1 and the ECM/PCM.

7. Turn the ignition switch to LOCK (0).

8. Jump the SCS line with the HDS.

9. Disconnect ECM/PCM connector A (44P).

ECM/PCM Power Source Circuit

Unexpected Voltage

Is DT C P0562 indicated?

Is DT C P0563 indicated?

08/08/21 14:18:57 61SNR030_110_0141

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