2006 ACURA CSX alternator

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DTC
(MIL indication ) Two Drive Cycle
Detection Detection Item MIL Note
11-11
P0606 (0)
Engine Control Module (ECM)/Powertrain Control Module (PCM)
Processor Malfunction ON (see page 11-145)
P060A (131) Powertrain Control Module (PCM) (A/T System) Internal Control
Module Malfunction ON (see page 11-145)
P062F (131) Engine Control Module (ECM)/Powertrain Control Module (PCM)
Internal Control Module Keep Alive Memory (KAM) Error ON (see page 11-144)
P0630 (139) VIN Not Programmed or Mismatch ON (see page 11-146)
P0685 (135) Engine Control Module (ECM)/Powertrain Control Module (PCM)
Power Control Circuit/Internal Circuit Malfunction ON (see page 11-147)
P0720 (122) Output Shaft (Countershaft) Speed Sensor Circuit Malfunction ON (see page 11-148)
P0720 (122) Output Shaft (Countershaft) Speed Sensor Circuit Malfunction ON (see page 11-149)
P1009 (56) Variable Valve Timing Control (VTC) Advance Malfunction ON (see page 11-283)
P1109 (13) Barometric Pressure (BARO) Sensor Circuit Out of Range High ON (see page 11-152)
P1116 (86) Engine Coolant Temperature (ECT) Sensor 1 Circuit Range/
Performance Problem ON (see page 11-153)
P1128 (5) Manifold Absolute Pressure (MAP) Sensor Signal Lower Than
Expected ON (see page 11-155)
P1129 (5) Manifold Absolute Pressure (MAP) Sensor Signal Higher Than
Expected ON (see page 11-156)
P1157 (48) Air Fuel Ratio (A/F) Sensor (Sensor 1) AFS Circuit High Voltage ON (see page 11-157)
P1172 (61) Air Fuel Ratio (A/F) Sensor (Sensor 1) Circuit Out of Range High ON (see page 11-159)
P1297 (20) Electrical Load Detector (ELD) Circuit Low Voltage OFF (see page 11-160)
P1298 (20) Electrical Load Detector (ELD) Circuit High Voltage OFF (see page 11-162)
P1454 (91) Fuel Tank Pressure (FTP) Sensor Circuit Range/Performance Problem ON (see page 11-402)
P145C (90) Evaporative Emission (EVAP) System Purge Flow Malfunction ON (see page 11-404)
P1549 (34) Charging System High Voltage OFF (see page 11-164)
P1658 (40) Electronic Throttle Control System (ETCS) Control Relay ON
Malfunction ON (see page 11-241)
P1659 (40) Electronic Throttle Control System (ETCS) Control Relay OFF
Malfunction ON (see page 11-243)
P1683 (40) Throttle Valve Default Position Spring Performance Problem ON (see page 11-247)
P1684 (40) Throttle Valve Return Spring Performance Problem ON (see page 11-248)
P16BB (116) Alternator B Terminal Circuit Low Voltage OFF (see page 11-165)
P16BC (116) Alternator FR Terminal Circuit/IGP Circuit Low Voltage OFF (see page 11-166)
P2101 (40) Electronic Throttle Control System (ETCS) Malfunction ON (see page 11-249)
P2118 (40) Throttle Actuator Current Range/Performance Problem ON (see page 11-251)
P2122 (37) Accelerator Pedal Position (APP) Sensor A (Throttle Position (TP)
Sensor D) Circuit Low Voltage ON (see page 11-253)
P2123 (37) Accelerator Pedal Position (APP) Sensor A (Throttle Position (TP)
Sensor D) Circuit High Voltage ON (see page 11-256)
P2127 (37) Accelerator Pedal Position (APP) Sensor B (Throttle Position (TP)
Sensor E) Circuit Low Voltage ON (see page 11-257)
P2128 (37) Accelerator Pedal Position (APP) Sensor B (Throttle Position (TP)
Sensor E) Circuit High Voltage ON (see page 11-260)
P2135 (7) Throttle Position (TP) Sensor A/B Incorrect Voltage Correlation ON (see page 11-262)
P2138 (37) Accelerator Pedal Position (APP) Sensor A/B (Throttle Position (TP)
Sensor D/E) Incorrect Voltage Correlation ON (see page 11-264)
P2176 (40) Throttle Actuator Control System Idle Position Not Learned ON (see page 11-266)
P2183 (192) Engine Coolant Temperature (ECT) Sensor 2 Circuit Range/
Performance Problem ON (see page 11-168)
P2184 (192) Engine Coolant Temperature (ECT) Sensor 2 Circuit Low Voltage ON (see page 11-170)
P2185 (192) Engine Coolant Temperature (ECT) Sensor 2 Circuit High Voltage ON (see page 11-172)
P2195 (48) Air Fuel Ratio (A/F) Sensor (Sensor 1) Signal Stuck Lean ON (see page 11-174)
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
2: The D indicator and the MIL may come on at the same time (A/T).
3: M/T
4: K20Z2 engine
5: K20Z3 engine
9: ’09 model
(cont’d)
1
9
1, 2
3
4
5
5
3
1
08/08/21 14:12:36 61SNR030_110_0011
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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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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
08/08/21 14:12:38 61SNR030_110_0018
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ECM/PCM Inputs and Outputs at Connector B ( ) (44P)
Terminal
numberWire color Terminal name DescriptionSignal
11-30Fuel and Emissions Systems
System Description (cont’d)
NOTE: Standard battery voltage is about 12 V.


30 RED/BLK VG (MASS AIR FLOW
(MAF) SENSOR SIDE) Detects MAF sensor signal At idle: about 1.1 1.6 V
(between VG terminal and VG terminal)
31 RED/YEL IAT (INTAKE AIR TEMPERATURE (IAT)
SENSOR) Detects IAT sensor signal With ignition switch ON (II): about 0.1 4.0 V
(about 1.8 V at normal operating temperature)
32 BLK/BLU VG (MASS AIR FLOW (MAF) SENSOR SIDE) Ground for MAF sensor
signal
33 GRN/BLK SG2 (SENSOR GROUND) Sensor ground Less than 1.0 V at all times
34 GRN/YEL VTS (ROCKER ARM OIL CONTROL SOLENOID) Drives rocker arm oil
control solenoidAt idle: about 0 V
35 BRN LSB (A/T CLUTCH PRESSURE CONTROL
SOLENOID VALVE B) Drives A/T clutch pressure
control solenoid valve B
With ignition switch ON (II): current controlled
36 BLK PG1 (POWER GROUND) Ground circuit for ECM/ PCMLess than 1.0 V at all times
40 BRN SDNP (PADDLE SHIFTER (DOWN SHIFT SWITCH)) Detects paddle shifter
(downshift switch) signalIn S:
With paddle shifter (downshift switch) pressed:
about 0 V
With paddle shifter (downshift switch) released:
about 5.0 V
41 WHT/GRN ALTC (ALTERNATOR CONTROL) Sends alternator control
signalWith warmed up engine running: about 5.0 V
(depending on electrical load)
42 WHT/BLU ALTL (ALTERNATOR L SIGNAL) Detects alternator L signal With ignition switch ON (II): about 0 V
With engine running: battery voltage
43 WHT/RED ALTF (ALTERNATOR FR SIGNAL) Detects alternator FR signal With engine running: about 2.6 3.4 V
(depending on electrical load)
44 RED/BLK LSA (A/T CLUTCH PRESSURE CONTROL
SOLENOID VALVE A) Drives A/T clutch pressure
control solenoid valve A
With ignition switch ON (II): current controlled
1: A/T
1
1
1
Terminal side of female terminals
08/08/21 14:12:44 61SNR030_110_0030
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Throttle Body
Brake Pedal Position Switch
Electrical Power Steering (EPS) Signal
Fuel Cutoff Control
Fuel Pump Control
PGM-FI Main Relay 1 and 2
Idle Control System
Fuel Supply System
11-36Fuel and Emissions Systems
System Description (cont’d)
THROTTLE VALVE
THROTTLE POSITION
(TP) SENSOR and
THROTTLE ACTUATOR
The throttle body is a single-barrel side draft type. The
lower portion of the throttle valve is heated by engine
coolant from the cylinder head to prevent icing of the
throttle plate. When the engine is cold, the A/C compressor is on, the
transmission is in gear, the brake pedal is pressed, the
power steering load is high, or the alternator is
charging, the ECM/PCM sends signal to the throttle
position to maintain the correct idle speed.
The brake pedal position switch signals the ECM/PCM
when the brake pedal is pressed.
The EPS signals the ECM/PCM when the power steering
load is high.
During deceleration with the throttle valve closed,
current to the injectors is cut off to improve fuel
economy at engine speeds over 1,000 rpm. Fuel cutoff
control also occurs when the engine speed exceeds
6,900 rpm (K20Z3: 8,200 rpm), regardless of the
position of the throttle valve, to protect the engine from
over-revving. When the vehicle is st
opped, the ECM/
PCM cuts the fuel at engine speeds over 5,000 rpm
(K20Z3: 7,700 rpm). On a cold engine, fuel cut occurs at
a lower engine speed.
When the ignition switch is turned to ON (II), the ECM/
PCM grounds PGM-FI main relay 2 (FUEL PUMP) which
feeds current to the fuel pump for 2 seconds to
pressurize the fuel system. With the engine running, the
ECM/PCM grounds PGM-FI main relay 2 (FUEL PUMP)
and feeds current to the fuel pump. When the engine is
not running and the ignition is turned to ON (II), the
ECM/PCM cuts ground to PGM-FI main relay 2 (FUEL
PUMP) which cuts current to the fuel pump.
PGM-FI main relay 1 is energized whenever the ignition
switch is ON (II), to supply battery voltage to the ECM/
PCM, power to the injectors, and power for PGM-FI
main relay 2 (FUEL PUMP). PGM-FI main relay 2 (FUEL
PUMP) is energized to supply power to the fuel pump
for 2 seconds when the ignition switch is turned to
ON (II), and when the engine is cranking or running.
08/08/21 14:13:39 61SNR030_110_0036
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VTEC/VTC
System Diagram
Camshaft Position (CMP) Sensor A
11-39
VTC
RETARD
CHAMBERFrom No. 3
ALTERNATOR
(10 A) FUSE
VARIOUS
SENSORS
ECM/PCM
CMP SENSOR A
INTAKE
CAMSHAFT
VTC
ADVANCE
CHAMBER ADVANCE
RETARD
VANE
VTC ACTUATOR VANE
HOUSING
From
OIL PUMP
VTC OIL CONTROL
SOLENOID VALVE
SPOOL
VALVE
ROCKER ARM
OIL CONTROL
SOLENOID ROCKER
ARM OIL
PRESSURE
SWITCH BLK
BLK GRN/YEL
BLU/BLK BLK/YEL
BLU/WHT BLU/WHT YEL
BRN/YEL
BLK
BRN/YEL
VTC STRAINERO-RING
MAGNET
TERMINAL
DRAIN
DRAIN
CMP sensor A detects camshaft angle position for the VTC system.
(cont’d)
08/08/21 14:13:41 61SNR030_110_0039
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Î

Evaporative Emission (EVAP) Control Diagram
11-45
ATMOSPHERE
ATMOSPHERE
FUEL FILL
CAP FUEL TANK VAPOR
RECIRCULATION
TUBE
FUEL TANK VAPOR
CONTROL VALVE
VARIOUS
SENSORS
FUEL TANK FTP SENSOR
EVAP CANISTER
VENT SHUT VALVE
PUR
LT GRN
ECM/PCM BLK
YEL
YEL/BLU
BLK/YEL RED
BLU BLK
LT GRN
From
No. 3
ALTERNATOR
(10 A) FUSE
From
PGM-FI
SUBRELAY
EVAP
CANISTER
EVAP CANISTER
PURGE VALVE ATMOSPHERE
The EVAP controls minimize the amount of fuel vapor escaping into the atmosphere. Vapor from the fuel tank is
temporarily stored in the EVAP canister until it can be purged from the canister into the engine and burned.
The EVAP canister is purged by drawing fresh air through it and into a port on the intake manifold.
The purging vacuum is controlled by the EVAP canister purge valve, which operates whenever engine coolant
temperature is above 60 °C (140 °F).
(cont’d)
* : This illustration shows K20Z2 engine
08/08/21 14:13:44 61SNR030_110_0045
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