fuse box ACURA CSX 2006 Service Workshop Manual


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11-213
ECM/PCM CONNECTOR A (44P)
MRLY (GRN)
C B
PGM-FI MAIN RELAY 1 4P CONNECTOR
65. Measure the voltage between ECM/PCM connector
terminal A6 and body ground.
Go to step 70.
Go to step 66.
66. Turn the ignition switch to LOCK (0).
67. Remove PGM-FI main relay 1 (C) from the under- hood fuse/relay box. 68. Measure the voltage between PGM-FI main relay 1
4P connector terminal No. 3 and body ground.
Go to step 69.
Replace the under-hood fuse/relay box
(see page 22-65).
(cont’d)
Terminal side of female terminals Terminal side of female terminals
Is there battery voltage?
Is there battery voltage?
08/08/21 14:23:32 61SNR030_110_0213
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11-214PGM-FI System
DLC Circuit Troubleshooting (cont’d)
MRLY (GRN)
ECM/PCM
CONNECTOR A (44P) MRLY
PGM-FI MAIN RELAY 1 4P CONNECTOR
C
B
PGM-FI MAIN RELAY 1 4P CONNECTOR
69. Check for continuity between PGM-FI main relay 1
4P connector terminal No. 4 and ECM/PCM
connector terminal A6.
Test PGM-FI main relay 1 (see page 22-70). If
the relay is OK, 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),
then recheck. If the symptom/indication goes away
with a known-good ECM/PCM, replace the original
ECM/PCM (see page 11-228).
Repair open in the wire between the ECM/
PCM (A6) and PGM-FI main relay 1. 70. Turn the ignition switch to LOCK (0).
71. Remove PGM-FI main relay 1 (C) from the under-
hood fuse/relay box.
72. Measure the voltage between PGM-FI main relay 1 4P connector terminal No. 1 and body ground.
Go to step 73.
Replace the under-hood fuse/relay box
(see page 22-65).
Terminal side of female terminals
Terminal side of female terminals
Terminal side of female terminals
Is there continuity?Is there battery voltage?
08/08/21 14:23:32 61SNR030_110_0214
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11-226 PGM-FI System
ELD Replacement
A
A A
B
C
D
A
A A
A
1. Remove the ECM/PCM (see page 11-228).
2. Remove the under-hood fuse/relay box (see page 22-65).
3. Remove the screw (A).
4. Turn the housing over, then remove the screw (A). 5. Turn the housing over again, using two flat-tip
screwdrivers, release the tabs (A), and pry up the
fuse/relay box base (B) from the fuse/relay box
housing (C).
NOTE: Make sure the terminals (D) are not bent or
damaged.
6. Remove the ELD (A).
7. Install the parts in the reverse order of removal.
08/08/21 14:23:39 61SNR030_110_0226
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DTC P1658:
11-24111-241
F
18. Turn the ignition switch to LOCK (0).
19. Replace the throttle body; K20Z2 engine (see page
11-348), K20Z3 engine (see page 11-349).
20. Reconnect all connectors.
21. Turn the ignition switch to ON (II).
22. Reset the ECM/PCM with the HDS.
23. Do the ECM/PCM idle learn procedure (see page 11-310).
24. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the throttle body and the ECM/PCM,
then go to step 1.
Troubleshooting is complete. If any other
Temporary DTCs or DTCs are indicated, go to the
indicated DTC’s troubleshooting.
25. Reconnect all connectors.
26. 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).
27. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the throttle body 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. 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. Do the ETCS TEST in the INSPECTION MENU with the HDS.
Intermittent failure, the system is OK at this
time. Check for poor connections or loose terminals
at the ETCS control relay and the ECM/PCM.
Go to step 3.
3. Turn the ignition switch to LOCK (0).
4. Remove the ETCS control relay (F) from the under- hood fuse/relay box.
(cont’d)ETCS Control Relay ON
Malfunction
Is DTC P0223 indicated?
Is DTC P0223 indicated? Is the RELAY circuit OK ?
08/08/21 14:26:40 61SNR030_110_0241
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DTC P1659:
11-24311-243
F
12. Turn the ignition switch to LOCK (0).
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.
Check for poor connections or loose
terminals at the ETCS control relay and the ECM/
PCM, then go to step 1.
Troubleshooting is complete. If any other
Temporary DTCs or DTCs are indicated, go to the
indicated DTC’s troubleshooting.
18. Turn the ignition switch to LOCK (0).
19. Reconnect all connectors.
20. 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).
21. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the ETCS control relay 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. 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. Check for Temporary DTCs or DTCs with the HDS.
Go to step 4.
Intermittent failure, the system is OK at this
time. Check for poor connections or loose terminals
at the ETCS control relay and the ECM/PCM.
4. Turn the ignition switch to LOCK (0).
5. Check the No. 21 DBW (THROTTLE ACTUATOR CONTROL) (15 A) fuse in the under-hood fuse/relay
box.
Go to step 6.
Go to step 17.
6. Remove the ETCS control relay (F) from the under- hood fuse/relay box.
(cont’d)ETCS Control Relay OFF
Malfunction
Is DTC P1658 indicated?
Is DTC P1658 indicated? Is DTC P1659 indicated?
IsthefuseOK?
08/08/21 14:26:41 61SNR030_110_0243
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11-244Electronic Throttle Control System
DTC Troubleshooting (cont’d)
ETCS CONTROL RELAY 4P CONNECTOR
IGP B
ETCS CONTROL RELAY 4P CONNECTOR
7. Test the ETCS control relay (see page 22-70).
Go to step 8.
Replace the ETCS control relay, then go to
step 23.
8. Turn the ignition switch to ON (II).
9. Measure the voltage between ETCS control relay 4P connector terminal No. 4 and body ground.
Go to step 10.
Replace the under-hood fuse/relay box
(see page 22-65), then go to step 22. 10. Measure the voltage between ETCS control relay
4P connector terminal No. 1 and body ground.
Go to step 11.
Replace the under-hood fuse/relay box
(see page 22-65), then go to step 22.
11. Turn the ignition switch to LOCK (0).
12. Jump the SCS line with the HDS.
13. Disconnect ECM/PCM connector C (44P).
Terminal side of female terminals Terminal side of female terminals
I s t he E T CS cont r ol r el ay OK ?
Is there battery voltage? Is there battery voltage?
08/08/21 14:26:41 61SNR030_110_0244
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11-246Electronic Throttle Control System
DTC Troubleshooting (cont’d)
F
ECM/PCM CONNECTOR C (44P)IG1ETCS (WHT) B
ETCS CONTROL RELAY 4P CONNECTOR
17. Remove the ETCS control relay (F) from the under-
hood fuse/relay box.
18. Jump the SCS line with the HDS.
19. Disconnect ECM/PCM connector C (44P).
20. Check for continuity between ECM/PCM connector terminal C1 and body ground.
Repair short in the wire between the ECM/
PCM (C1) and the ETCS control relay, then go to
step 23.
Go to step 21. 21. Check for continuity between ETCS control relay 4P
connector terminal No. 1 and body ground.
Replace the under-hood fuse/relay box
(see page 22-65), then go to step 23.
Go to step 28.
22. Turn the ignition switch to LOCK (0).
23. Reconnect all connectors.
24. Turn the ignition switch to ON (II).
25. Reset the ECM/PCM with the HDS.
26. Do the ECM/PCM idle learn procedure (see page 11-310).
27. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the ETCS control relay and the ECM/
PCM, then go to step 1.
Troubleshooting is complete. If any other
Temporary DTCs or DTCs are indicated, go to the
indicated DTC’s troubleshooting.
Terminal side of female terminals Terminal side of female terminals
Is there continuity?
Is there continuity?
Is DTC P1659 indicated?
08/08/21 14:26:43 61SNR030_110_0246
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11-318 Fuel Supply System
Fuel Pump Circuit Troubleshooting
A
PGM-FI MAIN RELAY 2 (FUEL PUMP) 4P CONNECTOR IGP UNDER-DASH FUSE/RELAY BOX CONNECTOR G (21P)
IGP (ORN)
JUMPER WIRE
UNDER-HOOD FUSE/RELAY BOX CONNECTOR E (10P) IGP (ORN)
If you suspect a problem with the fuel pump, check that
the fuel pump actually runs; when it is on, you will hear
some noise if you listen to the fuel fill port with the fuel
fill cap removed. The fuel pump should run for
2 seconds when the ignition switch is first turned on. If
the fuel pump does not make noise, check as follows:1. Turn the ignition switch to LOCK (0).
2. Remove the under-dash fuse/relay box (see page 22-66), then remove PGM-FI main relay 2 (FUEL
PUMP) (A) from the under-dash fuse/relay box.
3. Reinstall the under-dash fuse/relay box.
4. Turn the ignition switch to ON (II).
5. Measure the voltage between PGM-FI main relay 2 (FUEL PUMP) 4P connector terminal No. 4 and
body ground. Go to step 12.
Go to step 6.
6. Turn the ignition switch to LOCK (0).
7. Disconnect the under-hood fuse/relay box connector E (10P).
8. Disconnect the C101 connector at left side of engine compartment (see page 22-16).
9. Disconnect under-dash fuse/relay box connector G (21P).
10. Connect under-dash fuse/relay box connector G (21P) terminal No. 4 to body ground with a jumper
wire.
11. Check for continuity between under-hood fuse/ relay box connector E (10P) terminal No. 5 and
body ground.
Terminal side of female terminals Wire side of female terminals
Wire side of female terminals
Is there battery voltage?
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11-319
PGM-FI MAIN RELAY 2 (FUEL PUMP) 4P CONNECTORIG1 PGM-FI MAIN RELAY 2 (FUEL PUMP) 4P CONNECTOR
IMOFPRJUMPER WIRE
IMOFPR (BRN)
ECM/PCM CONNECTOR A (44P)
 Replace PGM-FI main relay 1.
 If needed, replace the under-hood fuse/relay box
(see page 22-65).
Repair open in the wire between the under-
hood fuse/relay box and the under-dash fuse/relay
box.
12. Measure the voltage between PGM-FI main relay 2 (FUEL PUMP) 4P connector terminal No. 1 and
body ground.
Go to step 13.
 ChecktheNo.2FUELPUMP(15A)fuseinthe under-dash fuse/relay box.
 If needed, replace the under-dash fuse/relay box (see page 22-66).
13. Turn the ignition switch to LOCK (0). 14. Connect PGM-FI main relay 2 (FUEL PUMP) 4P
connector terminal No. 3 to body ground with a
jumper wire.
15. Jump the SCS line with the HDS.
16. Disconnect ECM/PCM connector A (44P).
17. Check for continuity between body ground and ECM/PCM connector terminal A15.
Go to step 18.
Repair open in the wire between PGM-FI main
relay 2 (FUEL PUMP) and the ECM/PCM (A15).
18. Remove the under-dash fuse/relay box (see page 22-66), then reinstall PGM-FI main relay 2 (FUEL
PUMP).
19. Reinstall the under-dash fuse/relay box (see page 22-66).
(cont’d)
Terminal side of female terminals Terminal side of female terminals
Terminal side of female terminals
Is there continuity?
Is there battery voltage? Is there continuity?
08/08/21 14:29:46 61SNR030_110_0319
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11-320Fuel Supply System
Fuel Pump Circuit Troubleshooting (cont’d)
MRLY (GRN)
JUMPER WIRE
ECM/PCM CONNECTOR A (44P)
IMOFPR (BRN)
ECM/PCM CONNECTOR A (44P)UNDER-DASH FUSE/RELAY BOX CONNECTOR F (34P)
IMOFPR (BRN)
IMOFPR (BRN)
UNDER-DASH FUSE/RELAY BOX CONNECTOR F (34P)
20. Connect ECM/PCM connector terminal A6 to body
ground with a jumper wire.
21. Turn the ignition switch to ON (II).
22. Measure the voltage between ECM/PCM connector terminal A15 and body ground.
Go to step 23.
Replace PGM-FI main relay 2 (FUEL PUMP).
23. Turn the ignition switch to LOCK (0).
24. Reconnect ECM/PCM connector A (44P).
25. Open the SCS line with the HDS.
26. Turn the ignition switch to LOCK (0). 27. Turn the ignition switch to ON (II), and measure the
voltage between under-dash fuse/relay box
connector F (34P) terminal No. 10 and body ground
within 2 seconds.
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), then
recheck. If the symptom/indication goes away with
a known-good ECM/PCM, replace the original ECM/
PCM (see page 11-228).
Go to step 28.
28. Turn the ignition switch to ON (II), and measure the voltage between under-dash fuse/relay box
connector F (34P) terminal No. 10 and body ground
after 2 seconds.
Go to step 29.
If needed replace the under-dash fuse/relay
box (see page 22-66), then go to step 29.
Terminal side of female terminals
Terminal side of female terminalsWire side of female terminals
Wire side of female terminals
Is there battery voltage? Is there battery voltage?
Is there battery voltage?
08/08/21 14:29:46 61SNR030_110_0320
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