Acura CSX. Instruction — page 122

01

02

SNR9AA7K72100091298FAAT00

DTC P1298:

YES

NO

YES

NO

YES

NO

11-162

PGM-FI System

ELD 3P CONNECTOR

IG1 (YEL)

ELD 3P CONNECTOR

ECM/PCM CONNECTOR A (44P)

ELD (ORN)

ELD (ORN)

ELD Circuit High Voltage

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. Check the ELD in the DATA LIST with the HDS.

Go to step 3.

Intermittent failure, the system is OK at this

time. Check for poor connections or loose terminals
at the ELD and the ECM/PCM.

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

4. Disconnect the ELD 3P connector.

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

6. Measure the voltage between ELD 3P connector

terminal No. 1 and body ground.

Go to step 7.

Check the No. 3 ALTERNATOR (10 A) fuse in

the under-dash fuse/relay box. If the fuse is OK,
repair open in the wire between the No. 3
ALTERNATOR (10 A) fuse and the ELD, then go to
step 13.

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

8. Jump the SCS line with the HDS.

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

10. Check for continuity between ELD 3P connector

terminal No. 3 and ECM/PCM connector terminal
A23.

Go to step 11.

Repair open in the wire between the ECM/

PCM (A23) and the ELD, then go to step 13.

Wire side of female terminals

Wire side of female terminals

Terminal side of female terminals

Is 0.2 A or less indicated?

Is ther e batter y voltage?

Is ther e continuity?

08/08/21 14:20:24 61SNR030_110_0162

03

YES

NO

YES

NO

YES

NO

11-163

ELD 3P CONNECTOR

GND (BLK)

11. Check for continuity between ELD 3P connector

terminal No. 2 and body ground.

Go to step 12.

Repair open in the wire between the ELD and

G301 (see page 22-22), then go to step 13.

12. Replace the ELD (see page 11-226).

13. Reconnect all connectors.

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

15. Reset the ECM/PCM with the HDS.

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

11-310).

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

Go to step 18.

Troubleshooting complete. If any other

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

18. 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).

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

Check for poor connections or loose

terminals at the ELD and the ECM/PCM. If the ECM/
PCM was updated, substitute a known-good ECM/
PCM (see page 11-7), then recheck. If the ECM/PCM
was substituted, go to step 1.

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 are indicated,
go to the indicated DTC’s troubleshooting.

Wire side of female terminals

Is ther e continuity?

Is DT C P1298 indicated?

Is DT C P1298 indicated?

08/08/21 14:20:25 61SNR030_110_0163

SNR9AA7K72100091549FAAT00

DTC P1549:

YES

NO

YES

NO

11-164

PGM-FI System

Charging System High Voltage

NOTE:

• Before you troubleshoot, record all freeze data and

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

• If a high voltage battery (24 V, etc.) connected to the

vehicle, this DTC can be stored.

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 off
• Headlights off
• Rear window defogger off

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.

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 off
• Headlights off
• Rear window defogger off

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.

Is DT C P1549 indicated?

Is DT C P1549 indicated?

08/08/21 14:20:25 61SNR030_110_0164

SNR9AA7K721000916BBFAAT00

DTC P16BB:

YES

NO

YES

NO

YES

NO

YES

NO

11-165

Alternator B Terminal Circuit

Low Voltage

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 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.

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).

7. Check for poor connections or loose terminals at

the alternator and the under-hood fuse/relay box
(

B line).

Go to step 8.

Repair the connectors or the terminals, then

go to step 9.

8. Check for an open in the wire (

B line) between

the alternator and the under-hood fuse/relay box
(

B line).

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

go to step 9.

Repair open in the wire (

B line) between the

alternator and the under-hood fuse/relay box (

B

line), then go to step 9.

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

10. Reset the ECM/PCM with the HDS.

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

11-310).

12. Start the engine.

13. 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

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

M/T in neutral) for 1 minute.

15. 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.

Is DT C P16BB indicated?

Ar e the connections and the ter minals OK ?

Is the har ness OK ?

Is DT C P16BB indicated?

08/08/21 14:20:25 61SNR030_110_0165

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