fuse box ACURA CSX 2006 Service Owner's Guide

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ECM Circuit Diagram (K20Z3 engine) (cont’d)
11-68Fuel and Emissions Systems
System Description (cont’d)
PGM-FI MAIN
RELAY 2
(FUEL PUMP)
UNDER-DASH FUSE/RELAY BOX
STARTER
CUT RELAY
(ST CUT)
F5
YEL
F8
PNK
F10
BRN
F11
BRN
F24
F25
LT GRN
F30
LT GRN
F31
WHT
F29
G2
ORN
G4
ORN
G12
BRN
G16
WHT
G20
WHT
Q1
WHT
Q5
ORN
Q8
LT BLU
E9
GRN
E27
YEL
IG2
B IG1
D1
WHT
D2
BLU
C3
ORN
C1
YEL
3 UOPY
V
X
C36 IG1
A44 S-NET5V
A15 IMOFPR
A31
SCS
A40
BKSW
G401 BLK/GRN
C101 2
BLK
TRS
ST6
4
1
M
IGNITION SWITCH MICU
FUEL PUMP P
2
4
BLK
1
2
CLUTCH
INTERLOCK
SWITCH ZW
Clutch pedal pressed: closed
Clutch pedal released: open
IG1 HOT in ON (II)
and START (III)
ORN
G601BRN
22
UNDER-HOOD FUSE/RELAY BOX:
No. 21 DBW (THROTTLE
ACTUATOR CONTROL) (15 A) No. 18 IG COIL (15 A)
No.19FIMAIN(15A)
No.11FISUB(15A)
No.15OILLVL(7.5A)
No. 2 IG MAIN (50 A)
No. 23 BACK UP (10 A)
No.12STOP&HORN(15A)
No. 1 MAIN FUSE (100 A)
UNDER-DASH FUSE/RELAY BOX: No. 3 ALTERNATOR (10 A)
No. 2 FUEL PUMP (15 A)
No. 36 IG2 HAC (A/C) (10 A)
08/08/21 14:15:32 61SNR030_110_0068
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YES
NO
YES
NO YES
NO
YES
NO
DTC P0102:
11-7511-75
13. Turn the ignition switch to LOCK (0).
14. Replace the MAF sensor/IAT sensor (see page
11-224).
15. Turn the ignition switch to ON (II).
16. Reset the ECM/PCM with the HDS.
17. Do the ECM/PCM idle learn procedure (see page 11-310).
18. Test-drive the vehicle for several minutes in the range of these recorded freeze data parameters:
 ENGINE S PEED
 VSS
 MAP SENSOR
 MAF SENSOR
19. Check for Temporary DTCs or DTCs with the HDS.
Check for poor connections or loose
terminals at the MAF sensor/IAT sensor and the
ECM/PCM, then go to step 1.
Go to step 20.
20. Monitor the OBD STATUS for DTC P0101 in the DTCs MENU with the HDS.
Troubleshooting is complete. If any other
Temporary DTCs or DTCs were indicated in step 19,
go to the indicated DTC’s troubleshooting.
If the screen indicates FAILED, check for poor
connections or loose terminals at the MAF sensor/
IATsensorandtheECM/PCM,thengotostep1.If
the screen indicates NOT COMPLETED, go to step
18. 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), and wait 2 seconds.
2. Check the MAF SENSOR 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 MAF sensor/IAT sensor and the ECM/PCM.
3. Turn the ignition switch to LOCK (0).
4. Check the No. 3 ALTERNATOR (10 A) fuse in the under-dash fuse/relay box.
Go to step 4.
Repair short in the wire between the MAF
sensor/IAT sensor and the No. 3 ALTERNATOR
(10 A) fuse. Also replace the No. 3 ALTERNATOR
(10 A) fuse, then go to step 20.
5. Disconnect the MAF sensor/IAT sensor 5P connector.
6. Turn the ignition switch to ON (II).
(cont’d)MAF Sensor Circuit Low Voltage
Is DT C P0101 ind icated ?Does t he scr een i nd i cat e PASSE D? I s about 0 gm/ s or 0.1 V or l ess i nd i cat ed ?
IsthefuseOK?
08/08/21 14:15:38 61SNR030_110_0075
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YES
NO
YES
NO
YES
NO
DTC P0135:
11-9911-99
11. Monitor the OBD STATUS for DTC P0134 in theDTCs MENU with the HDS.
Troubleshooting is complete. If any other
Temporary DTCs or DTCs were indicated in step 10,
go to the indicated DTC’s troubleshooting.
If the screen indicates FAILED, check for poor
connections or loose terminals at the A/F sensor
(Sensor 1), the PGM-FI subrelay, and the ECM/PCM,
then go to step 1. If the screen indicates NOT
COMPLETED, keep idling until a result comes on. 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. 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.
4. Check for Temporary DTCs or DTCs with the HDS.
Go to step 5.
Intermittent failure, the system is OK at this
time. Check for poor connections or loose terminals
at the A/F sensor (Sensor 1), the PGM-FI subrelay,
and the ECM/PCM.
5. Turn the ignition switch to LOCK (0).
6. Check the No. 11 FI SUB (15 A) fuse in the under- hood fuse/relay box.
Go to step 7.
Go to step 20.
(cont’d)A/F Sensor (Sensor 1) Heater
Circuit Malfunction
Does t he scr een i nd i cat e PASSE D?
Is DT C P0135 ind icated ?IsthefuseOK?
08/08/21 14:17:18 61SNR030_110_0099
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NO
11-100PGM-FI System
DTC Troubleshooting (cont’d)
E
A/F SENSOR (SENSOR 1) 4P CONNECTOR AFSHTC B A/F SENSOR (SENSOR 1) 4P CONNECTOR
AFSHTC B
AFS
7. Test the PGM-FI subrelay (E) in the under-hood
fuse/relay box (see page 22-70).
Go to step 8.
Replace the PGM-FI subrelay, then go to step
24.
8. Disconnect the A/F sensor (Sensor 1) 4P connector.
9. At the sensor side, measure the resistance between A/F sensor (Sensor 1) 4P connector terminals No. 3
and No. 4.
Go to step 10.
Go to step 23. 10. At the sensor side, check for continuity between
A/F sensor (Sensor 1) 4P connector terminals No. 1
and No. 3, and between terminals No. 1 and No. 4
individually.
Go to step 24.
Go to step 11.
11. Jump the SCS line with the HDS.
12. Disconnect ECM/PCM connector C (44P).
Wire side of female terminals Wire side of female terminals
Is the PGM-F I subrelay OK ?
Is t her e 2.0 2.7 at r oom t emper at ur e? Is there continuity?
08/08/21 14:17:18 61SNR030_110_0100
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11-101
A/F SENSOR (SENSOR 1) 4P CONNECTOR
AFSHTC (BLU)
JUMPER WIRE
ECM/PCM CONNECTOR C (44P) AFSHTC (WHT/GRN) E
13. Connect A/F sensor (Sensor 1) 4P connector
terminal No. 3 to body ground with a jumper wire.
14. Check for continuity between ECM/PCM connector terminal C9 and body ground.
Go to step 15.
Repair open in the wire between the ECM/
PCM (C9) and the A/F sensor (Sensor 1), then go to
step 25. 15. Remove the PGM-FI subrelay (E) from the under-
hood fuse/relay box.
(cont’d)
Terminal side of male terminals
Terminal side of female terminals
Is there continuity?
08/08/21 14:17:19 61SNR030_110_0101
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NO
YES
NO
11-103
E
A/F SENSOR (SENSOR 1) 4P CONNECTOR B(PUR)
20. Remove the PGM-FI subrelay (E) from the under-hood fuse/relay box.
21. Disconnect the A/F sensor (Sensor 1) 4P connector.
22. Disconnect the EVAP canister vent shut valve 2P connector.
23. Check for continuity between A/F sensor (Sensor 1) 4P connector terminal No. 4 and body ground.
Repair short in the wire between the PGM-FI
subrelay, the EVAP canister vent shut valve, and
the A/F sensor (Sensor 1). Also replace the No. 11
FISUB(15A)fuse,thengotostep25.
Replace the under-hood fuse/relay box
(see page 22-65), then go to step 25. 24. Replace the A/F sensor (Sensor 1) (see page
11-221).
25. Reconnect all connectors.
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 A/F sensor (Sensor 1), the PGM-FI
subrelay, and the ECM/PCM, then go to step 1.
Go to step 30.
30. Monitor the OBD STATUS for DTC P0135 in the DTCs MENU with the HDS.
Troubleshooting is complete. If any other
Temporary DTCs or DTCs were indicated in step 29,
go to the indicated DTC’s troubleshooting.
If the screen indicates FAILED, check for poor
connections or loose terminals at the A/F sensor
(Sensor 1), the PGM-FI subrelay, and the ECM/PCM,
then go to step 1. If the screen indicates NOT
COMPLETED, keep idling until a result comes on.
(cont’d)
Terminal side of male terminals
Is there continuity? Is DT C P0135 ind icated ?
Does t he scr een i nd i cat e PASSE D?
08/08/21 14:17:21 61SNR030_110_0103
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DTC P0141:
YES
NO
YES
NO YES
NO
YES
NO
11-110PGM-FI System
DTC Troubleshooting (cont’d)
SECONDARY HO2S (SENSOR 2) 4P CONNECTOR
SECONDARY HO2S (SENSOR 2) 4P CONNECTOR
Secondary HO2S (Sensor 2)
Heater Circuit Malfunction
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. Start the engine.
4. Check for Temporary DTCs or DTCs with the HDS.
Go to step 5.
Intermittent failure, the system is OK at this
time. Check for poor connections or loose terminals
at the secondary HO2S (Sensor 2) and the ECM/
PCM.
5. Turn the ignition switch to LOCK (0).
6. Check the No. 3 ALTERNATOR (10 A) fuse in the under-dash fuse/relay box.
Go to step 7.
Repair short in the wire between the
secondary HO2S (Sensor 2) and the No. 3
ALTERNATOR (10 A) fuse. Also replace the No. 3
ALTERNATOR (10 A) fuse, then go to step 23.
7. Disconnect the secondary HO2S (Sensor 2) 4P connector. 8. At the secondary HO2S (Sensor 2) side, measure
the resistance between secondary HO2S (Sensor 2)
4P connector terminals No. 3 and No. 4.
Go to step 9.
Go to step 22.
9. At the secondary HO2S (Sensor 2) side, check for continuity between body ground and secondary
HO2S (Sensor 2) 4P connector terminals No. 3 and
No. 4 individually.
Go to step 22.
Go to step 10.
Wire side of female terminals
Wire side of female terminalsIs DTC P0141 indicated?
IsthefuseOK? Is t her e 5.4 7 .3 at r oom t emper at ur e?
Is there continuity?
08/08/21 14:17:23 61SNR030_110_0110
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NO
DTC P0562:
11-14011-140PGM-FI System
DTC Troubleshooting (cont’d)
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/Con
 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 t he scr een i nd i cat e PASSE D?
Is DTC P0562 indicated?
08/08/21 14:18:57 61SNR030_110_0140
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NO YES
NO
DTC P0563:
11-14111-141
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/Con
 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/relaybox,thengotostep1.
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
atPGM-FImainrelay1andtheECM/PCM.
7. Turn the ignition switch to LOCK (0).
8. Jump the SCS line with the HDS.
9. Disconnect ECM/PCM connector A (44P).
(cont’d)ECM/PCM Power Source Circuit
Unexpected Voltage
Is DTC P0562 indicated? Is DTC P0563 indicated?
08/08/21 14:18:57 61SNR030_110_0141
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YES
NO
11-142PGM-FI System
DTC Troubleshooting (cont’d)
ECM/PCM CONNECTOR A (44P)
MRLY (GRN)
C ECM/PCM CONNECTOR A (44P)
MRLY (GRN)
C
10. Measure the voltage between ECM/PCM connector terminal A6 and body ground.
Go to step 13.
Go to step 11.
11. Remove PGM-FI main relay 1 (C) from the under- hood fuse/relay box. 12. Check for continuity between ECM/PCM connector
terminal A6 and body ground.
Repair short in the wire between the ECM/
PCM (A6) and PGM-FI main relay 1, then go to step
16.
Go to step 15.
13. Remove PGM-FI main relay 1 (C) from the under- hood fuse/relay box.
Terminal side of female terminals Terminal side of female terminals
Is there battery voltage?Is there continuity?
08/08/21 14:18:58 61SNR030_110_0142
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