Acura RL (1996-2004 year). Manual — part 373
How to Set Readiness Codes
Catalytic Converter
NOTE:
• Do not turn the ignition switch OFF.
• When the battery negative cable is disconnected, all
readiness codes are cleared.
Required condition ('96 - 97 models):
• Ambient temperature between 32 - 95°F (0 - 35°C).
• Altitude below 2,400 m (7,874 ft.).
Required condition ('98 - 01 models):
Ambient temperature between 20 - 95°F (-7 - 35°C).
1. Connect the scan tool to the Data Link Connector
(DLC).
2. Start the engine. Hold it at 3,000 rpm with no load
(in Park or neutral) until the radiator fan comes on.
3. Drive for about 10 minutes without stopping on a
highway or freeway. Your speed can vary.
4. '96 - 97 models:
With the transmission in D4 position, drive at a
steady speed between 33 - 37 mph (53 - 59 km/h)
for 30 seconds.
'98 - 01 models:
With the A/T in D4 position, drive at a steady speed
between 50 - 62 mph (80 - 100 km/h) for 30 sec-
onds.
5. Do step 4 three times. Between each repetition,
close the throttle completely for 1 - 2 seconds. If the
engine is stopped during this part of the procedure,
go to step 3 and do the procedure again.
6. Check for the readiness code with the scan tool.
EGR Monitor
NOTE:
• Do not turn the ignition switch OFF.
• When the battery negative cable is disconnected, all
readiness codes are cleared.
Required condition ('96 - 97 models):
Altitude below 2,400 m (7,874 ft.).
1. Connect the scan tool to the Data Link Connector
(DLC).
2. Start the engine, and hold it at 3,000 rpm with no
load (in Park or neutral) until the radiator fan comes
on.
3. Drive at a steady speed with the transmission in D4
position, between 50 - 62 mph (80 - 100 km/h) for
more than 10 seconds.
4. With the A/T in D4 position, decelerate from 62 mph
(100 km/h) by completely releasing the throttle for
at least 5 seconds. If the engine is stopped during
this procedure, go to step 3 and do the procedure
again.
5. Check for the readiness code with the scan tool.
EVAP Leak Monitor
NOTE:
• When the battery negative cable is disconnected, all
readiness codes are cleared.
• If the engine is stopped while doing the procedure
between stops 6 and 16, do this procedure from step
1 again.
1. Make sure the gasoline level is 60 - 90% of fuel tank
capacity (not full).
2. Turn the ignition switch OFF.
3. Let the vehicle sit more than 8 hours.
4. '96 - 97 models:
Make sure the outside temperature is 32 - 95°F (0 -
35°C).
'98 - 01 models:
Make sure the outside temperature is 20 - 95°F (-7 -
35°C).
5. Connect the scan tool to the Data Link Connector
(DLC).
6. Start the engine and drive for about 15 minutes.
7. '96 - 97 models:
Keep the vehicle at a steady speed between 50 - 62
mph (80 - 100 km/h), without moving the accelera-
tor pedal, for about 1 minute.
'98 - 01 models:
Keep the vehicle at a steady speed between 50 - 70
mph (80 - 114 km/h), without moving the accelera-
tor pedal, for about 1 minute.
8. Stop the vehicle (do not stop engine).
9. Repeat steps 7 and 8 two more times.
10. Check for the readiness code with the scan tool. If
the readiness code does not set, go to step 11.
11. When ambient temperature is less than 32°F (0°C),
hold the engine at 3,000 rpm with no load (in Park
or neutral) until the radiator fan comes on.
12. When ambient temperature is more than 86°F
(30°C), remove the fuel fill cap, then install the fuel
fill cap.
13. After step 12, drive for about 20 minutes on a free-
way.
14. '96 - 97 models:
Keep the vehicle at a steady speed between 50 - 62
mph (80 - 100 km/h), without moving the accelera-
tor pedal, for about 1 minute.
'98 - 01 models:
Keep the vehicle at a steady speed between 50 - 70
mph (80 - 114 km/h), without moving the accelera-
tor pedal, for about 1 minute.
15. Stop the vehicle (do not stop the engine).
16. Repeat steps 14 and 15 two more times.
17. Check for the readiness code with the scan tool.
Main Menu
Table of Contents
PGM-FI System
How to Set Readiness Codes (cont'd)
HO2S Monitor
NOTE:
• Do not turn the ignition switch OFF.
• When the battery negative cable is disconnected, all
readiness codes are cleared.
Required condition ('96 - 97 models):
• Ambient temperature between 32 - 95°F (0 - 35°C).
• Altitude below 2,400 m (7,874 ft.).
Required condition ('98 - 01 models):
Ambient temperature between 20 - 95°F (-7 - 35°C).
1. Connect the scan tool to the Data Link Connector
(DLC).
2. Start the engine, and hold it at 3,000 rpm with no
load (in Park or neutral) until the radiator fan comes
on.
3. Let the engine idle for 5 seconds.
4. Drive at a steady speed between 50 - 62 mph (80 -
100 km/h) for about 2 minutes.
5. With the A/T in D4 position, decelerate from 62 mph
(100 km/h) by completely releasing the throttle for
at least 5 seconds. If the engine is stopped during
this procedure, go to step 4 and do the procedure
again.
6. Check for the readiness code with the scan tool.
HO2S Heater Monitor
NOTE: When the battery negative cable is disconnected,
all readiness codes are cleared.
1. Connect the scan tool to the Data Link Connector
(DLC).
2. Start the engine, and let the engine idle for 10 min-
utes.
3. Check for the readiness code with the scan tool.
Main Menu
Table of Contents
MIL Circuit Troubleshooting
Turn the ignition switch ON (II)
and watch the Malfunction
Indicator Lamp (MIL).
NOTE:
If this symptom is intermittent, check for the following problems.
• The MIL never comes on after the ignition switch is turned ON (II).
— A loose No. 6 ECU (PCM) (20 A) fuse in the under-dash fuse/relay box
— A loose No. 22 FUEL PUMP (20 A) fuse in the under-dash fuse/relay box
— An intermittent short in the wire between the PCM (A7) and the gauge assembly
— An intermittent short in the wire between the PCM (D10) and the MAP sensor
— An intermittent short in the wire between the PCM (D21) and the TP sensor, EGR
valve position sensor, fuel tank pressure sensor, TCS control valve angle sensor (with
TCS, VSA*)
— A loose No. 25 IG COIL (30 A) fuse in the under-dash fuse/relay box
— PGM-FI main relay
• The MIL stays on or comes on after 2 seconds with the ignition switch turned ON (II).
— An intermittent short in the wire between the PCM (C5) and the service check con-
nector, data link connector*
— An intermittent open in the wires between the PCM (D22) and the service check connec-
tor
— An intermittent short in the wire between the PCM (A7) and the gauge assembly.
• See the OBDII scan tool or Honda PGM Tester user's manuals for specific operating
instructions.
Does the MIL come on and
stay on?
YES
Does the low oil pressure
indicator light come on?
NO
YES
Repair short or open in the
wire between No. 20 ECU
(PCM) (20 A) fuse and gauge
assembly.
Replace No. 20 ECU (PCM) (20
A) fuse.
Check the engine starting:
Try to start the engine.
Does the engine start?
YES
*: '00 - 01 models
NO
Check the fuse:
1. Turn the ignition switch OFF.
2. Turn the ignition switch ON (II).
*: '00 - 01 models
Main Menu
Table of Contents
PGM-FI System
MIL Circuit Troubleshooting (cont'd)
Is the fuse OK?
NO
Is the fuse OK?
YES
Check for an open in the wires
(IGP lines):
1. Disconnect the fuel injector
and IAC valve connectors.
2. Turn the ignition switch ON (II).
3. Measure voltage between
body ground and the PCM
connector terminals A13 and
B1 individually.
Is there battery voltage?
NO
YES
— Repair short in the wire
between No. 6 ECU (PCM) (20
A) fuse and PGM-FI main
relay.
— Repair short in the wire
between PGM-FI main relay
and the PCM, fuel injectors,
or IAC valve.
— Repair short in the wire
between fuel injectors and
IAC valve.
— Replace No. 6 ECU (PCM) (20
A) fuse.
— Repair short in the wire
between No. 25 IG COIL (30 A)
fuse and PGM-FI main relay.
— Replace No. 25 IG COIL (30 A)
fuse.
PCM CONNECTORS
A (26P)
— Repair open in the wire(s)
between the PCM (A13, B9)
and PGM-FI main relay.
— Check for a poor connection
or loose wires at the PGM-FI
main relay.
— Test the PGM-FI main relay
).
— Repair short or open in the
wire between the immobilizer
unit and PCM.
Wire side of female terminals
NO
YES
Main Menu
Table of Contents
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