ignition ACURA CSX 2006 Service Repair Manual

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11-317
A
F
139.8 mm
(5.5 in.)
14. Remove the jumper wire from the fuel tank unit 4Pconnector.
15. Remove the fuel tank unit (see page 11-334).
16. Test the fuel gauge sending unit (see page 11-340).
Go to step 17.
Replace the fuel gauge sending unit (see page
11-338), then go to step 23.
17. Connect the fuel tank unit 4P connector.
18. Reconnect the gauge control module (tach) 36P connector.
19. Turn the ignition switch to ON (II).
20. Clear the DTC with the HDS.
21. Set the float (A) to the F position.
22. Check the fuel gauge.
Go to step 30.
Replace the gauge control module (tach)
(see page 22-277), then go to step 23. 23. Turn the ignition switch to LOCK (0).
24. Reconnect all connectors.
25. Install the parts in the reverse order of removal.
26. Turn the ignition switch to ON (II).
27. Reset the ECM/PCM with the HDS.
28. Do the ECM/PCM idle learn procedure (see page
11-310).
29. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the gauge control module (tach) and
the fuel gauge sending unit, then go to step 1.
Troubleshooting is complete. If any other
Temporary DTCs or DTCs are indicated, go to the
indicated DTC’s troubleshooting.
30. Reconnect all connectors.
31. Install the parts in the reverse order of removal.
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. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the gauge control module (tach) and
the fuel gauge sending unit. 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.
I s t he f uel gauge send i ng uni t OK ?
Does t he gauge mov e t o t he f ul l posi t i on? Is DTC P0463 indicated?
Is DTC P0463 indicated?
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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?
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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?
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11-321
FUEL TANK UNIT 4P CONNECTOR
FUEL PUMP
(GRN)
PGM-FI MAIN RELAY 2 (FUEL PUMP) 4P CONNECTOR FUEL PUMP IG1
JUMPER WIRE FUEL TANK UNIT 4P CONNECTOR
FUEL PUMP
(GRN)
GND (BLK)
FUEL TANK UNIT 4P CONNECTOR
29. Turn the ignition switch to LOCK (0).
30. Remove the rear seat cushion (see page 20-131).
31. Remove the rear floor upper cross-member, then
remove the access panel from the floor (see page
11-334).
32. Turn the ignition switch to ON (II), and measure the voltage between fuel tank unit 4P connector
terminal No. 2 and body ground within 2 seconds.
Go to step 37.
Go to step 33.
33. Turn the ignition switch to LOCK (0).
34. Remove PGM-FI main relay 2 (FUEL PUMP).
35. Connect PGM-FI main relay 2 (FUEL PUMP) 4P connector terminals No. 1 and No. 2 with a jumper
wire. 36. Turn the ignition switch to ON (II), and measure the
voltage between fuel tank unit 4P connector
terminal No. 2 and body ground.
Replace PGM-FI main relay 2
(FUEL PUMP).
Repair open in the wire between PGM-FI main
relay 2 (FUEL PUMP) and the fuel tank unit 4P
connector.
37. Turn the ignition switch to LOCK (0).
38. Check for continuity between fuel tank unit 4P connector terminal No. 4 and body ground.
Replace the fuel pump (see page 11-338).
Repair open in the wire between the fuel tank
unit 4P connector and G601 (see page 22-34).
Wire side of female terminals
Terminal side of female terminals Wire side of female terminals
Wire side of female terminals
Is there battery voltage?
Is there battery voltage?
Is there continuity?
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With the HDS
11-322 Fuel Supply System
Fuel Pressure Relieving
A
A
A
Before disconnecting fuel lines or hoses, relieve
pressure from the system by disabling the fuel pump
and then disconnecting the fuel tube/quick connect
fitting in the engine compartment. 1. Turn the ignition switch to LOCK (0).
2. Connect the HDS to the data link connector (DLC) (A) located under the driver’s side of the dashboard.
3. Turn the ignition switch to ON (II).
4. Make sure the HDS communicates with the ECM/ PCM. If it doesn’t, go to the DLC circuit
troubleshooting (see page 11- 204).
5. Turn the ignition switch to LOCK (0).
6. Remove the fuel fill cap to relieve the pressure in the fuel tank.
7. Turn the ignition switch to ON (II).
8. From the INSPECTION MENU of the HDS, select Fuel Pump OFF, then start the engine, and let it idle
until it stalls.
NOTE: Do not allow the engine to idle above 1,000 rpm or the ECM/PCM will continue to operate the fuel
pump.
 A DTC or a Temporary DTC may be set during this procedure. Check for DTCs, and clear them
as needed (see page 11-4). 9. Turn the ignition switch to LOCK (0).
10. Do the battery terminal disconnection procedure (see page 22-68).
11. Remove the quick-connect fitting cover (A).
12. Check the fuel quick-connect fitting for dirt, and clean it if needed.
13. Place a rag or shop towel over the quick-connect fitting (A).
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Without the HDS
11-323
A
B C
E
D
A
14. Disconnect the quick-connect fitting (A): Hold the
connector (B) with one hand, and squeeze the
retainer tabs (C) with the other hand to release
them from the locking tabs (D). Pull the connector
off.
NOTE: Be careful not to damage the line (E) or other parts.
 Do not use tools.
 If the connector does not move, keep the retainer tabs pressed down, and alternately pull and push
the connector until it comes off easily.
 Do not remove the retainer from the line; once removed, the retainer must be replaced with a
new one.
15. After disconnecting the quick-connect fitting, check it for dirt or damage (see step 4 on page 11-330).
16. Do the battery terminal reconnection procedure (see page 22-68). 1. Remove the under-dash fuse/relay box (see page
22-66), then remove PGM-Fl main relay 2 (FUEL
PUMP) (A) from the under-dash fuse/relay box.
2. Reinstall the under-dash fuse/relay box.
3. Start the engine, and let it idle until it stalls. NOTE: If any DTCs are stored, clear and ignore
them.
4. Turn the ignition switch to LOCK (0).
5. Remove the fuel fill cap.
6. Do the battery terminal disconnection procedure (see page 22-68).
(cont’d)
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 Special Tools Required
11-32511-325
Fuel Pressure Test Fuel Tank Draining
07406-004000B
07AAJ-S6MA150
 Fuel pressure gauge 07406-004000B
 Fuel pressure gauge attachment set 07AAJ-S6MA150 1. Relieve the fuel pressure (see page 11-322).
2. Disconnect the quick-connect fitting. Attach the fuel pressure gauge set and the fuel pressure gauge.
3. Start the engine, and let it idle.  If the engine starts, go to step 5.
 If the engine does not start, go to step 4.
4. Check to see if the fuel pump is running: Listen to the fuel filler 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 pump runs, go to step 5.
 If the pump does not run, do the fuel pump circuit troubleshooting (see page 11- 318).
5. Read the fuel pressure gauge. The pressure should be 330 380 kPa (3.4 3.9 kgf/cm , 48 55 psi).
 If the pressure is OK, the test is complete.
 If the pressure is out of specification, replace the fuel pressure regulator (see page 11-337) and the
fuel filter (see page 11-337), then recheck the fuel
pressure. 1. Remove the fuel tank unit (see page 11-334).
2. Using a hand pump, a hose, and a container
suitable for fuel, draw the fuel from the fuel tank.
3. Reinstall the fuel tank unit (see page 11-335).
2
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Connection to new fuel line
11-333
A
B
Sanoh-made Tokai-made
A
B C
5. When you reconnect the connector with the old
retainer, make sure the connection is secure and
the tabs (A) are firmly locked into place; check
visually and also by pulling the connector (B).
When you replace the fuel line with a new one,
make sure you remove the ring pull (C) upwards
after you confirm the connection is secure.
NOTE: Before you remove the ring pull, make sure
the fuel line connection is secure. If the connection
is not secure, the ring pull could break when you try
to remove it. 6. Reconnect the negative cable to the battery, and
turn the ignition switch to ON (II) (but do not
operate the starter motor). The fuel pump will run
for about 2 seconds, and fuel pressure will rise.
Repeat this two or three times, then check that
there is no leakage in the fuel supply system.
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11-336Fuel Supply System
Fuel Tank Unit Removal and Installation (cont’d)
A
B
07AAA-SNAA100 A
120 N·m
(12.2 kgf·m, 88.2 lbf·ft) A
A
4. Install a locknut plate (A) and a new locknut (B).
5. Using the special tool, tighten the new locknut (A) to the specified torque.
NOTE: After tightening, make sure the marks are still aligned.
 After installation, check the base gasket, visually or by hand, to make sure it is not pinched. 6. Connect the fuel tank unit 4P connector, then
connect the quick-connect fitting.
7. Reconnect the negative cable to the battery, and turn the ignition switch to ON (II) (but do not
operate the starter motor). The fuel pump will run
for about 2 seconds, and fuel pressure will rise.
Repeat this two or three times, then check that
there is no leakage in the fuel supply system.
8. Install the access panel (A) to the floor.
9. Install the rear floor upper cross-member (A).
10. Install the rear seat cushion (see page 20-131).
11. Install the fuel fill cap.
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