ignition ACURA CSX 2006 Service Workshop Manual

Learn Procedure (without the HDS)How to End a Troubleshooting Session
(required after any troubleshooting)
11-5
1. 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.
2. Test-drive the vehicle on a level road: Decelerate (with the throttle fully closed) from an engine speed
of 2,500 rpm down to 1,000 rpm with the A/T in
S in 1st or 2nd, or M/T in 1st.
3. Test-drive the vehicle on a level road: Decelerate (with the throttle fully closed) from an engine speed
of 5,000 rpm down to 3,000 rpm with the A/T in
S in 1st or 2nd, or M/T in 1st.
4. Repeat step 2 and 3 several times.
5. Turn the ignition switch to LOCK (0).
6. Turn the ignition switch to ON (II), and wait 30 seconds. 1. Reset the ECM/PCM with the HDS.
2. Do the ECM/PCM idle learn procedure (see page
11-310).
3. Turn the ignition switch to LOCK (0).
4. Disconnect the HDS from the DLC. NOTE: The ECM/PCM is part of the immobilizer
system. If you replace the ECM/PCM, it will have a
different immobilizer code. For the engine to start,
you must rewrite the immobilizer code with the
HDS.
(cont’d)
08/08/21 14:12:33 61SNR030_110_0005
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ÃŽ
How to Troubleshoot Circuits at the ECM/
PCM Connectors
11-6 Fuel and Emissions Systems
General Troubleshooting Information (cont’d)
A
D E
B
A
C A
B D
C
A
NOTE: The ECM/PCM overwrites data and monitors the
EVAP system for about 30 minutes after the ignition
switch is turned to LOCK (0) or ACC (I). Jumping the
SCS line after turning the ignition switch to LOCK (0) or
ACC (I) cancels this function. Disconnecting the ECM/
PCM during this function, without jumping the SCS line
first, can damage the ECM/PCM.
1. Make sure the ignition switch is turned to LOCK (0), then jump the SCS line with the HDS.
2. Remove the cover (A).
3. Lift up the under-hood fuse/relay box (D).
4. Remove the coolant reservoir (E). Disconnect ECM/ PCM connectors A, B, and C, and probe the
terminals from the terminal side of the connectors.
NOTE: ECM/PCM connectors A, B, and C have
symbols (A= , B= , C= ) embosed on them for
identification. 5. When diagnosis/troubleshooting is done at the
ECM/PCM connector, use the terminal test port (A)
above the terminal you need to check.
6. Connect one side of the patch cord’s terminals (A) to a commercially available digital multimeter (B),
and connect the other side cord’s terminals (C) to a
commercially available banana jack (Pomona
Electronics Tool No. 3563 or equivalent) (D).
7. Gently contact the pin probe (male) at the terminal test port from the terminal side. Do not force the
tips into the terminals.
 For accurate results, always use the pin probe (male).
 To prevent damage to the c onnector
terminals, do not insert test equipment
probes, paper clips, or other substitutes as
they can damage the terminals. Damaged
terminals cause a poor connection and an
incorrect measurement.
 Do not puncture the insulation on a wire. Punctures can cause poor or intermittent
electrical connections.
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Substituting the ECM/PCM
Special Tools Required
11-7
AA
D
9.8 N·m
(1.0 kgf·m,
7.2 lbf·ft)
A
B
C
E
 Honda diagnostic system (HDS) tablet tester
 Honda interface module (HIM) and an iN workstation with the latest HDS software version
 HDS pocket tester
 GNA600 and an iN workstation with the latest HDS software version
Any one of the above updating tools can be used.
NOTE: Use this procedure when you need to substitute
a known-good ECM/PCM during troubleshooting
procedures.
1. Connect the HDS to the data link connector (DLC) (A) located under the driver’s side of the dashboard.
2. Turn the ignition switch to ON (II).
3. Make sure the HDS communicates with the ECM/ PCM and other vehicle systems. If it doesn’t, go to
the DLC circuit troubleshooting (see page 11-204). If
you are returning from DLC circuit troubleshooting,
skip step 4 and 5, and clean the throttle body after
substituting the ECM/PCM (see page 11-344).
4. Select the INSPECTION MENU with the HDS.
5. Select the ETCS TEST, then select the TP POSITION CHECK, and follow the screen prompts.
NOTE: If the TP POSITION CHECK indicates FAILED,
continue this procedure. 6. Turn the ignition switch to LOCK (0).
7. Jump the SCS line with the HDS.
8. Do the battery removal procedure (see page 22-69).
9. Remove the cover (A).
10. Remove the bolts (D), then remove the ECM/PCM (E).
11. Disconnect ECM/PCM connectors A, B, and C. NOTE: ECM/PCM connectors A, B, and C have
symbols (A= , B= , C= ) embossed on them for
identification.
12. Install the parts in the reverse order of removal.
(cont’d)
08/08/21 14:12:35 61SNR030_110_0007
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OBD Status
11-8Fuel and Emissions Systems
General Troubleshooting Information (cont’d)
13. Do the battery installation procedure (see page
22-69).
14. Turn the ignition switch to ON (II). NOTE: DTC P0630 VIN Not Programmed or
Mismatch may be stored because the VIN has not
been programmed into the ECM/PCM; ignore it,
and continue this procedure.
15. Manually input the VIN to the ECM/PCM with the HDS.
16. Select the IMMOBI SYSTEM with the HDS.
17. Enter the immobilizer code that you got from the iN, or use the ECM/PCM replacement procedure in the
HDS; this allows you to start the engine.
18. Reset the ECM/PCM with the HDS.
19. If the TP POSITION CHECK failed in step 5, clean the throttle body (see page 11- 344).
20. Update the ECM/PCM if it does not have the latest software (see page 11-227).
21. Do the ECM/PCM idle learn procedure (see page 11-310).
22. Do the CKP pattern clear/CKP pattern learn procedure. The OBD status shows the current system status of
each DTC and all of the parameters. This function is
used to see if the repair was successfully completed.
The results of diagnostic tests for the DTC are displayed
as:
 PASSED: The on board diagnosis is successfully finished.
 FAILED: The on board diagnosis has finished but failed.
 EXECUTING: The vehicle is in enable criteria conditions for the DTC and the on board diagnosis is
running.
 NOT COMPLETED: The on board diagnosis was running but is out of the enable conditions of the DTC.
 OUT OF CONDITION: The vehicle has stayed out of the enable conditions for the DTC.
08/08/21 14:12:35 61SNR030_110_0008
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DTC
(MIL indication ) Two Drive Cycle
Detection Detection Item MIL Note
11-10Fuel and Emissions Systems
DTC Troubleshooting Index (cont’d)
P0325 (23)
Knock Sensor Circuit Malfunction ON (see page 11-126)
P0335 (4) Crankshaft Position (CKP) Sensor No Signal ON (see page 11-128)
P0339 (4) Crankshaft Position (CKP) Sensor Circuit Intermittent Interruption ON (see page 11-131)
P0340 (57) Camshaft Position (CMP) Sensor A No Signal ON (see page 11-278)
P0341 (57) Camshaft Position (CMP) Sensor A and Crankshaft Position (CKP)
Sensor Incorrect Phase Detected ON (see page 11-281)
P0344 (57) Camshaft Position (CMP) Sensor A Circuit Intermittent Interruption ON (see page 11-282)
P0365 (8) Camshaft Position (CMP) Sensor B No Signal ON (see page 11-132)
P0369 (8) Camshaft Position (CMP) Sensor B Circuit Intermittent Interruption ON (see page 11-134)
P0401 (80) Exhaust Gas Recirculation (EGR) Insufficient Flow ON (see page 11-357)
P0404 (12) Exhaust Gas Recirculation (EGR) Valve Circuit Range/Performance
Problem ON (see page 11-358)
P0406 (12) Exhaust Gas Recirculation (EGR) Valve Position Sensor Circuit High
Voltage ON (see page 11-361)
P0420 (67) Catalyst System Efficiency Below Threshold ON (see page 11-353)
P0443 (92) Evaporative Emission (EVAP) Canister Purge Valve Circuit
Malfunction ON (see page 11-375)
P0451 (91) Fuel Tank Pressure (FTP) Sensor Circuit Range/Performance Problem ON (see page 11-379)
P0452 (91) Fuel Tank Pressure (FTP) Sensor Circuit Low Voltage ON (see page 11-380)
P0453 (91) Fuel Tank Pressure (FTP) Sensor Circuit High Voltage ON (see page 11-383)
P0455 (90) Evaporative Emission (EVAP) System Large Leak Detected ON (see page 11-386)
P0456 (90) Evaporative Emission (EVAP) System Very Small Leak Detected ON (see page 11-386)
P0457 (90) Evaporative Emission (EVAP) System Leak Detected/Fuel Fill Cap
Loose or Missing ON (see page 11-390)
P0457 (90) Evaporative Emission (EVAP) System Leak Detected/Fuel Fill Cap
Loose or Missing OFF (see page 11-390)
P0461 (121) Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit Range/
Performance Problem OFF (see page 11-313)
P0462 (121) Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit Low Voltage OFF (see page 11-313)
P0463 (121) Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit High Voltage OFF (see page 11-315)
P0496 (92) Evaporative Emission (EVAP) System High Purge Flow Detected ON (see page 11-391)
P0497 (90) Evaporative Emission (EVAP) System Low Purge Flow Detected ON (see page 11-392)
P0497 (90) Evaporative Emission (EVAP) System Low Purge Flow Detected ON (see page 11-395)
P0498 (117) Evaporative Emission (EVAP) Canister Vent Shut Valve Circuit Low
Voltage ON (see page 11-398)
P0499 (117) Evaporative Emission (EVAP) Canister Vent Shut Valve Circuit High
Voltage ON (see page 11-401)
P0506 (14) Idle Control System RPM Lower Than Expected ON (see page 11-298)
P0507 (14) Idle Control System RPM Higher Than Expected ON (see page 11-300)
P050A (167) Cold Start Idle Air Control System Performance Problem ON (see page 11-135)
P050B (167) Cold Start Ignition Timing Control System Performance Problem ON (see page 11-137)
P0532 (191) A/C Pressure Sensor Circuit Low Voltage OFF (see page 11-301)
P0533 (191) A/C Pressure Sensor Circuit High Voltage OFF (see page 11-303)
P0562 (34) Charging System Low Voltage OFF (see page 11-140)
P0563 (34) Engine Control Module (ECM)/Powertrain Control Module (PCM)
Power Source Circuit Unexpected Voltage OFF (see page 11-141)
P0602 (196) Engine Control Module (ECM)/Powertrain Control Module (PCM)
Programming Error ON (see page 11-144)
P0603 (131) Engine Control Module (ECM)/Powertrain Control Module (PCM)
Internal Control Module Keep Alive Memory (KAM) Error ON (see page 11-144)
NOTE:  The above DTCs are indicated when the PGM-FI system is selected with the HDS.
 Some automatic transmission DTCs cause the MIL to come on. If the MIL is on and no DTCs are indicated in the PGM-FI system, select the A/T system, and check for automatic transmission DTCs.
: These DTCs are indicated by a blinking MIL when the SCS line is jumped with the HDS.
4: K20Z2 engine
5: K20Z3 engine
6: ’06 model
7: ’07-09 models
8: ’06-08 models
4
4
4
6
7 6
7
4
5
4
5
8
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DTC
(MIL indication ) Two Drive Cycle
Detection Detection Item MIL Note
11-12Fuel and Emissions Systems
DTC Troubleshooting Index (cont’d)
P2227 (13)
Barometric Pressure (BARO) Sensor Circuit Range/Performance
Problem ON (see page 11-176)
P2228 (13) Barometric Pressure (BARO) Sensor Circuit Low Voltage ON (see page 11-177)
P2229 (13) Barometric Pressure (BARO) Sensor Circuit High Voltage ON (see page 11-177)
P2238 (48) Air Fuel Ratio (A/F) Sensor (Sensor 1) AFS Circuit Low Voltage ON (see page 11-178)
P2252 (48) Air Fuel Ratio (A/F) Sensor (Sensor 1) AFS Circuit Low Voltage ON (see page 11-179)
P2270 (63) Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2))
Circuit Signal Stuck Lean ON (see page 11-181)
P2271 (63) Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2))
Circuit Signal Stuck Rich ON (see page 11-181)
P2413 (12) Exhaust Gas Recirculation (EGR) System Malfunction ON (see page 11-363)
P2422 (117) Evaporative Emission (EVAP) Canister Vent Shut Valve Stuck Closed
Malfunction ON (see page 11-402)
P2610 (132) Engine Control Module (ECM)/Powertrain Control Module (PCM)
Ignition Off Internal Timer Malfunction ON (see page 11-182)
P2646 (22) Rocker Arm Oil Pressure Switch Circuit Low Voltage ON (see page 11-284)
P2647 (22) Rocker Arm Oil Pressure Switch Circuit High Voltage ON (see page 11-287)
P2648 (21) Rocker Arm Oil Control Solenoid Circuit Low Voltage ON (see page 11-289)
P2649 (21) Rocker Arm Oil Control Solenoid Circuit High Voltage ON (see page 11-291)
P2A00 (61) Air Fuel Ratio (A/F) Sensor (Sensor 1) Circuit Range/Performance
Problem ON (see page 11-182)
U0028 (126) F-CAN Malfunction (BUS-OFF (Engine Control Module (ECM)/
Powertrain Control Module (PCM))) ON (see page 11-183)
U0122 (126) F-CAN Malfunction (Engine Control Module (ECM)/Powertrain
Control Module (PCM)-Vehicle Stability Assist (VSA) Modulator-
Control Unit) OFF (see page 11-184)
U0131 (126) F-CAN Malfunction (Engine Control Module (ECM)/Powertrain
Control Module (PCM)-Electrical Power Steering (EPS) Control Unit) OFF (see page 11-186)
U0155 (126) F-CAN Malfunction (Engine Control Module (ECM)/Powertrain
Control Module (PCM)-Gauge Control Module) ON (see page 11-188)
U0300 (131) PGM-FI System and A/T System Program Version Mismatch ON (see page 11-190)
NOTE:  The above DTCs are indicated when the PGM-FI system is selected with the HDS.
 Some automatic transmission DTCs cause the MIL to come on. If the MIL is on and no DTCs are indicated in the PGM-FI system, select the A/T system, and check for automatic transmission DTCs.
: These DTCs are indicated by a blinking MIL when the SCS line is jumped with the HDS.
1: A/T
4: K20Z2 engine
6: with VSA
4
6
1
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Symptom Diagnostic procedure Also check for
11-13
Symptom Troubleshooting Index
When the vehicle has one of these symptoms, check for a diagnostic trouble code (DTC) with the HDS. If there is no
DTC, do the diagnostic procedure for the symptom, in the sequence listed, until you find the cause.












Engine will not start
(MIL works OK, no DTCs set)
1.
2.
3.
4.Test the battery (see page 22-67).
Test the starter (see page 4-9).
Check the fuel pressure (see page 11-325).
Troubleshoot the fuel pump circuit (see page 11-
318).Low compression
No ignition spark
Intake air leaks
Locked up engine
Broken cam chain
Fuel contamination
Engine will not start
(MIL comes on and stays on,
no DTCs set) Troubleshoot the DLC circuit (see page 11-204).
MIL comes on and stays on,
or never comes on at all, no
DTCs set Troubleshoot the MIL circuit (see page 11-203).
Engine will not start
(MIL works OK, no DTCs set,
immobilizer indicator stays
on or flashes) Check the immobilizer system (see page 22-321).
Engine starts but stalls
immediately
(MIL works OK, no DTCs set,
immobilizer indicator stays
on or flashes) Check the immobilizer system (see page 22-323).
Engine is hard to start
(MIL works OK, no DTCs set) 1.
2.
3.Test the battery (see page 22-67).
Check the fuel pressure (see page 11-325).
Clean the throttle body (see page 11-
344).Low compression
Intake air leaks
Fuel contamination
Weak spark
Cold fast idle too low
(MIL works OK, no DTCs set) 1.
2.
3.DotheECM/PCMidlelearnprocedure(seepage
11-310).
Check the idle speed (see page 11-309).
Clean the throttle body (see page 11-
344).
Cold fast idle too high
(MIL works OK, no DTCs set) 1.
2.
3.DotheECM/PCMidlelearnprocedure(seepage
11-310).
Check the idle speed (see page 11-309).
Do the throttle position learning check (see page
11-343). Intake air leaks
Idle speed fluctuates
(MIL works OK, no DTCs set) 1.
2.
3.
4.DotheECM/PCMidlelearnprocedure(seepage
11-310).
Check the idle speed (see page 11-309).
Do the carbon accumulation check (see page 11-343).
Troubleshoot the A/C signal circuit (see page 11-306). Incorrect valve
timing or clearance
adjustment
Intake air leaks
After warming up, idle speed
is below specification without
load
(MIL works OK, no DTCs set) 1.
2.
Troubleshoot the alternator FR signal circuit
(see page 11-307).
Do the carbon accumulation check (see page 11-343). Incorrect valve
timing or clearance
adjustment
After warming up, idle speed
is above specification without
load
(MIL works OK, no DTCs set) 1.
2.
Troubleshoot the alternator FR signal circuit
(see page 11-307).
Inspect the APP sensor (see page 11-268). Intake air leaks
(cont’d)
08/08/21 14:12:36 61SNR030_110_0013
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Electronic Control Systems
Self-diagnosisOne Drive Cycle Detection Method
Two Drive Cycle Detection Method
Fail-safe Function
MIL Bulb Check and Readiness Code Condition
Self Shut Down (SSD) Mode
11-15
System Description
The functions of the fuel and emission control systems are managed by the engine control module (ECM) on vehicles
with manual transmissions or the powertrain control module (PCM) on vehicles with automatic transmissions.
The ECM/PCM detects a failure of a signal from a sensor or another control unit and stores a Temporary DTC or a DTC.
Depending on the failure, a DTC is stored in either the first or the second drive cycle (K20Z3 engine: DTC P0457, turns
on the malfunction indicator lamp (MIL) during the third drive cycle). When a DTC is stored, the ECM/PCM turns on the
malfunction indicator lamp (MIL) by a signal sent to the gauge via F-CAN.  When an abnormality occurs in the signal from a sensor or from another control unit, the ECM/PCM stores a DTC
and turns on the MIL immediately.
 When an abnormality occurs in the signal from a sensor or from another control unit in the first drive cycle, the
ECM/PCM stores a Temporary DTC. If the failure continues in the second drive cycle, the ECM/PCM stores a DTC and
turns on the MIL.
When an abnormality occurs in the signal from a sensor or another control unit, the ECM/PCM ignores the signal and
substitutes a pre-programmed value that allows the engine to continue running. This causes a DTC to be stored and
the MIL to come on.
When the ignition switch is turned to ON (II), the ECM/PCM turns on the MIL via the F-CAN circuit for about 15 to
20 seconds to check the bulb condition. If any readiness codes are not set to complete, the MIL flashes five times. If all
readiness codes are set to complete, the MIL goes off.
After the ignition switch is turned to LOCK (0), the ECM/PCM stays on (about 30 minutes). If the ECM/PCM connector is
disconnected during this time, the ECM/PCM may be damaged. To cancel this mode, disconnect the negative cable
from the battery or jump the SCS line with the HDS after the ignition switch is turned to LOCK (0).
(cont’d)
08/08/21 14:12:37 61SNR030_110_0015
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ÃŽ
´
ECM/PCM Electrical Connections
11-16Fuel and Emissions Systems
System Description (cont’d)
IGNITION
SWITCH
IG1
ST B
IG2
IG1 HOT in ON (II)
and START (III) IGNITION COIL
RELAY
ELD PGM-FI MAIN
RELAY 2 (FUEL PUMP)P
FUEL PUMP
PGM-FI MAIN
RELAY 1
BATTERY A/C CONDENSER
FAN RELAYRADIATOR
FAN RELAY
A/C COMPRESSOR
CLUTCH RELAY
To
COOLING
FAN CONTROL
RELAY E
A8 IGPC36 IG1
A14 ACC
A5 FANH A23 ELD
A4 FANL GF
C
B
D
A
PG1 B36PG2 B1
MRLY A6
IMOFPR A15
SUBRLY A21
ETCSRLY A20 STARTER CUT
RELAY (ST CUT)
PGMETCS C2 PGM-FI
SUBRELAY
ETCS CONTROL
RELAY
I
IG1ETCS C1
ECM/PCM
CLUTCH
INTERLOCK
SWITCH
H
J*2
*1
T
*3
*1: A/T
*2: M/T
*3: K20Z3 engine
UNDER-HOOD
FUSE/RELAY BOX:
No. 1 MAIN FUSE (100 A)
No.19FIMAIN(15A)
No. 2 IG MAIN (50 A)
No. 23 BACK UP (10 A)
No. 12 STOP & HORN
(15 A) No. 18 IG COIL (15 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)
UNDER-HOOD
FUSE/RELAY BOX: No.15OILLVL(7.5A)
No. 11 FI SUB (15 A)
No. 21 DBW (THROTTLE
ACTUATOR CONTROL) (15 A)
08/08/21 14:12:37 61SNR030_110_0016
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´µ
ECM/PCM Electrical Connections (cont’d)
11-18 Fuel and Emissions Systems
System Description (cont’d)
D
C
EVAP CANISTER
PURGE VALVE
EVAP CANISTER
VENT SHUT VALVE
ALTERNATOR
ICM
To
SPARK
PLUG
No. 1 IGNITION COIL
To
SPARK
PLUG ICM
No. 2 IGNITION COIL
To
SPARK
PLUG ICM
No. 3 IGNITION COIL
To
SPARK
PLUG ICM
No. 4 IGNITION COIL A10 VSV B3 PCS
B42 ALTL
B43 ALTF
C15 IGPLS1
C16 IGPLS2
C17 IGPLS3
C18 IGPLS4 B41 ALTC LG1 C40 I
VTS B34 ROCKER ARM
OIL CONTROL
SOLENOID
VTC C23
AFSHTC C9
AFS C29
SHO2S C27
SO2SHTC B4
LG2 C44
AFS C30
SECONDARY
HO2S
(SENSOR 2) A/F SENSOR
(SENSOR 1)
S-NET5V A44 G
CMPA C41 K
Q
CMP SENSOR A
ROCKER ARM
OIL PRESSURE
SWITCH
P
VTPSW C22 VTC OIL CONTROL
SOLENOID VALVE
To MICU
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