Acura RSX Honda Integra. Manual — part 79
Electronic Control System
Self-diagnosis
One Drive Cycle Detection Method
Two Drive Cycle Detection Method
Fail-safe Function
MIL Bulb Check and Readiness Code Condition
Self Shut Down (SSD) Mode
11-22
Fuel and Emissions Systems
System Description (cont’d)
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 from another control unit and stores a Temporary DTC or a
DTC. Depending on the failure, a DTC is stored whether in the first or the second drive cycle. When a DTC is stored, the
ECM/PCM turns on the malfunction indicator lamp (MIL) by supplying ground to the MIL circuit.
•
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.
•
When an abnormality occurs in the signal from a sensor or from another control unit in first drive cycle, the ECM/
PCM stores a Temporary DTC. The MIL does not come on at this time. 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 from another control unit, the ECM/PCM ignores that signal,
stores a DTC and turns on the MIL. The ECM/PCM will use a pre-programmed value, for that sensor, which allows the
engine to continue running.
When the ignition switch is turned ON (II), the ECM/PCM supplies ground to the MIL 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 out.
After the ignition switch is turned OFF, the ECM/PCM stays on (up to 15 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 OFF.
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01
+
+
−
ECM/PCM Electrical Connections
2002-2004 Models
11-23
IGNITION
SWITCH
IG1
ST
B
IG2
STARTER CUT
RELAY
P
FUEL PUMP
IG1 HOT in ON (II)
and START (III)
CLUTCH
INTERLOCK
SWITCH *2
H
*1
A3 IGP1
A2 IGP2
E9 IG1
E18 ACC
B6 FANC
A/C CLUTCH RELAY
RADIATOR
FAN RELAY
F
E
C
B
D
A
BATTERY
ECM/PCM
PG1 A5
PG2 A4
MRLY E7
IMOFPR E1
G
E15 ELD
ELD
PGM-FI MAIN
RELAY 2
(FUEL PUMP)
PGM-FI MAIN
RELAY 1
(FI MAIN)
UNDER-HOOD
FUSE/RELAY BOX:
No. 19 BATTERY (100 A)
No. 6 ECU
(ECM/PCM) (15 A)
No. 20 IG
(USA: 40 A, Canada: 50 A)
No. 14 OPTION (30 A)
No. 9 BACK UP (7.5 A)
No. 7 HORN, STOP
(15 A)
UNDER-DASH
FUSE/RELAY BOX:
No. 17 FUEL PUMP
(15 A)
No. 4 ACG (10 A)
No. 1 IGN COIL (15 A)
No. 10 METER (7.5 A)
No. 14 A/C CLUTCH
RELAY (10 A)
No. 2
B LAF
HEATER (20 A)
*1: A/T
*2: M/T
*3: K20A2 engine
*4: K20A3 engine
(cont’d)
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02
−
ECM/PCM Electrical Connections
2002-2004 Models (cont’d)
11-24
Fuel and Emissions Systems
System Description (cont’d)
ECT SENSOR
IAT SENSOR
TP SENSOR
MAP SENSOR
IMTVPS
(IMRCVPS) A8
ECT B8
IAT B17
SG2 A10
TPS A15
VCC2 A20
SG1 A11
MAP A19
VCC1 A21
KNOCK SENSOR
KS A9
J
IMT (IMRC) VALVE
POSITION SENSOR
*4
I
L
K
RVS B7
C
*3
A7 CKP
A26 CMPB
A12 IACV
B3 INJ3
B4 INJ2
B5 INJ1
A
IAC VALVE
No. 1 INJECTOR
No. 2 INJECTOR
No. 3 INJECTOR
B2 INJ4
No. 4 INJECTOR
CMP SENSOR B
CKP SENSOR
I
BARO SENSOR
(Built into
the ECM/PCM)
IMT (IMRC) B22
IMT (IMRC) SOLENOID
VALVE
REVERSE LOCK
SOLENOID VALVE
*1
*1
*1
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*01
+
−
+
−
+
11-25
AFSHTC
A22
LG1 A24
AFSHTCR E8
G
LG3 E3
VTC
B23
VTS B15
(VTEC SOLENOID
VALVE)
(VTEC OIL
PRESSURE SWITCH)
VTPSW B9
VTC
B1
AFSHTC A1
AFS
A16
SHO2S E2
SHO2SHTC E6
LG2 A23
CMPA A25
AFS
A6
SECONDARY
HO2S
(SENSOR 2)
A/F SENSOR
(SENSOR 1)
A/F SENSOR
RELAY
N
O
I
C
CMP SENSOR A
VTC OIL CONTROL
SOLENOID VALVE
E21 VSV
E20 2WBS
B21 PCS
A18 VSS
B18 ALTC
C
EVAP CANISTER
PURGE VALVE
VSS
EVAP CANISTER
VENT SHUT VALVE
EVAP BYPASS
SOLENOID VALVE
ALTERNATOR
M
A30 IGPLS1
A29 IGPLS2
A28 IGPLS3
A27 IGPLS4
E
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
*2
B13 ALTF
B10 ALTL
ROCKER ARM OIL
PRESSURE SWITCH
ROCKER ARM OIL
CONTROL SOLENOID
(cont’d)
05/06/27 17:31:14 61S6M040_110_0025
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