Honda Ridgeline. Manual — part 72
21
+
PCM Circuit Diagram (cont’d)
11-52
Fuel and Emissions Systems
System Description (cont’d)
BRAKE PEDAL
POSITION SWITCH
Brake pedal pressed: closed
Brake pedal released: open
Brake pedal pressed: open
Brake pedal released: closed
WHT/BLK
RED
BLK/YEL
BRN/YEL
AF
ELD
UNDER-HOOD
FUSE/RELAY BOX
BATTERY
G1
A/C
COMPRESSOR
CLUTCH
RELAY
ETCS CONTROL
RELAY
L
YEL/BLK
YEL/GRN
YEL/BLK
WHT
GRN/WHT
RED
WHT/GRN
BRN
RED
BLK/YEL
BLK/YEL
BLU/BLK
BLK
AG
YEL/BLK
11
4
9
2
10
G202
AM
AK
AJ
AI
AH
A/C
CONDENSER
FAN RELAY
RADIATOR
FAN RELAY
AUXILIARY
UNDER-HOOD
RELAY BOX
GRN/YEL
BLU/YEL
GRN
YEL
AL
WHT/BLK
BRN/YEL
YEL/GRN
C205
C205
C101
GRN
2
1
3
4
17
19
1
1
9
6
10
15
9
1
3
2
3
4
3
4
YEL/
WHT
2
1
2
1
BLK/
YEL
A5
FANH
A4
FANL
A23
ELD
A20
ETCSRLY
C4
IG1ETCS
A7
BKSWNC
A8
BKSW
A14
ACC
To
FAN
CONTROL
RELAY
UNDER-HOOD FUSE/RELAY BOX:
No. 9 DBW (THROTTLE ACTUATOR
CONTROL) (15 A)
No. 23
B IG MAIN (50 A)
No. 17 OP1 (40 A)
No. 13 HORN, STOP (20 A)
No. 8 FI ECU (PCM) (15 A)
No. 22 BATTERY (120 A)
*07
+
11-53
A/F SENSOR
RELAY (LAF)
PGM-FI MAIN
RELAY 2
(FUEL PUMP)
IGNITION COIL
RELAY
(IG COIL)
STARTER
CUT RELAY
(ST CUT)
PGM-FI MAIN
RELAY 1
(FI MAIN)
UNDER-DASH FUSE/RELAY BOX
A6
MRLY
B37
IG1
A11
IMOFPR
A21
AFSHTCR
BARO
SENSOR
(Built into the
PCM)
RED/YEL
1
38
GRN/WHT
3
BRN
14
10
GRN/WHT
2
WHT
1
BLK/YEL
1
8
BLK/YEL
2
10
BLK/YEL
7
AC
AH
Z
AK
AI
AJ
WHT/BLK
36
2
YEL/BLK
8
AE
N
S
AG
R
AL
YEL/GRN
13
IGNITION SWITCH
IG2
ST
B
IG1
5
2
3
FUEL PUMP
P
YEL/GRN
5
BLK
4
G502
16
YEL/WHT
IG1 HOT in ON (II)
and START (III)
BLK/WHT
31
32
BRN
9
11
LT BLU
13
ORN
BLU/WHT
LT BLU
WHT/GRN
GRN/YEL
WHT/GRN
AB
AA
W
AM
AD
BLK/YEL
ORN
18
8
1
9
C204
C101
C204
10
C205
RED/YEL
GRN/WHT
AF
X
YEL/RED*
BLK/YEL
36*
29
GRN/YEL
16
Y
4
1
ACC
*1 : ’06 model
*2 : ’07-08 models
YEL*
44*
*1
*2
UNDER-DASH
FUSE/RELAY BOX:
No. 4 LAF (A/F SENSOR) (15 A)
No. 23 IGP (7.5 A)
No. 2 IG COIL (15 A)
No. 18 IG ACG (15 A)
No. 19 IG FUEL PUMP (15 A)
No. 30 IG HAC (A/C) (7.5 A)
No. 32 ACC (7.5 A)*
No. 21 IG1 METER (7.5 A)*
1
2
BLK/GRN
BLK/GRN
1
1
2
2
−
−
SJC8A00A20326939901BBAT00
Malfunction Indicator Lamp (MIL) Indication
(In relation to Readiness Codes)
Catalytic Converter Monitor and Readiness
Code
Enable Criteria
Procedure
11-54
Fuel and Emissions Systems
How to Set Readiness Codes
The vehicle has certain ‘‘readiness codes’’ that are part
of the on-board diagnostics for the emissions systems.
If the vehicle’s battery has been disconnected or gone
dead, if the DTCs have been cleared, or if the PCM has
been reset, these readiness codes are reset to
incomplete. In some states, part of the emissions
testing is to make sure these codes are set to complete.
If all of them are not set to complete, the vehicle may
fail the emission test, or the test cannot be finished.
To check if the readiness codes are set to complete,
turn the ignition switch ON (II), but do not start the
engine. The MIL will come on for 15
20 seconds. If it
then goes off, the readiness codes are set to complete.
If it flashes five times, one or more readiness codes are
not set to complete. To set readiness codes from
incomplete to complete, do the procedure for the
appropriate code.
To check the status of a specific DTC system, check the
OBD status in the DTC MENU with the HDS (see page
11-9). This screen displays the code, the current data list
of the enable criteria, and the status of the readiness
testing.
NOTE:
• Do not turn the ignition switch off during the
procedure.
• All readiness codes are cleared when the battery is
disconnected, if the DTCs have been cleared, or if the
PCM is reset with the HDS.
• Low ambient temperatures or excessive stop-and-go
traffic may increase the drive time needed to switch
the readiness code from incomplete to complete.
• The readiness code will not switch to complete until
all the enable criteria are met.
• If a fault in the secondary HO2S system caused the
MIL to come on, the readiness code cannot be set to
complete until you correct the fault.
• ECT SENSOR 1 at 158 °F (70 °C) or more.
• IAT SENSOR at 20 °F (
7 °C) or more.
• Vehicle speed sensor (VSS) above 25 mph (40 km/h).
1. Connect the HDS to the vehicle’s data link
connector (DLC), and bring up the READINESS
CODEs screen for Catalyst in the DTCs MENU.
2. Start the engine.
3. Test-drive the vehicle under stop-and-go conditions
with short periods of steady cruise. After about
5 miles (8 km), the readiness code should switch to
complete.
4. If the readiness code is still not set to complete,
check for a Temporary DTC with the HDS. If there is
no DTC, one or more of the enable criteria were
probably not met; repeat the procedure.
Evaporative Emission (EVAP) Control
System Monitor and Readiness Code
Air Fuel Ratio (A/F) Sensor Monitor and
Readiness Code
Enable Criteria
Procedure
Enable Criteria
Procedure
11-55
NOTE: All readiness codes are cleared when the battery
is disconnected, if the DTCs have been cleared, or if the
PCM is reset with the HDS.
• Battery voltage is more than 10.5 V.
• Engine at idle.
• ECT SENSOR 1 and 2 between 176 °F (80 °C) and
212 °F (100 °C).
• MAP SENSOR less than 46.6 kPa (14 in.Hg,
350 mmHg).
• VSS 0 mph (0 km/h).
• IAT SENSOR between 32 °F (0 °C) and 212 °F (100 °C).
1. Connect the HDS to the DLC.
2. Start the engine.
3. Select EVAP TEST in the INSPECTION MENU with
the HDS, then select the FUNCTION TEST in the
EVAP TEST MENU.
• If the result is normal, readiness is complete.
• If the result is not normal, go to the next step.
4. Check for a Temporary DTC. If there is no DTC, one
or more of the enable criteria were probably not
met; repeat the procedure.
NOTE:
• Do not turn the ignition switch off during the
procedure.
• All readiness codes are cleared when the battery is
disconnected, if the DTCs have been cleared, or if the
PCM is reset with the HDS.
ECT SENSOR 1 at 140 °F (60 °C) or more.
1. Start the engine.
2. Test-drive the vehicle under stop-and-go conditions
with short periods of steady cruise. During the
drive, decelerate (with the throttle fully closed) for
5 seconds. After about 3.5 miles (5.6 km), the
readiness code should switch from incomplete to
complete.
3. Check the readiness codes screen for the AIR FUEL
RATIO (A/F) SENSOR in the DTCs MENU with the
HDS.
• If the screen shows complete, readiness is
complete.
• If the screen shows not complete, go to the next
step.
4. Check for a Temporary DTC. If there is no DTC, the
enable criteria was probably not met. Select the
DATA LIST Menu. Check the ECT in the ALL DATA
LIST with the HDS. If the ECT is less than 140 °F
(60 °C), run the engine until it is more than 140 °F
(60 °C), then repeat the procedure.
(cont’d)
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