Acura RSX Honda Integra. Manual — part 74

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Ref. No.

Tool Number

Description

Qty

11-2

Fuel and Emissions Systems

Special Tools

07JAZ-001000B

Vacuum/Pressure Gauge, 0

4 in.Hg

1

07SAZ-001000A

Backprobe Set

2

07VAJ-0040100

Fuel Pressure Gauge Adapter

1

07NAJ-P07010A

Pressure Gauge Adapter

1

07AAA-S0XA100

Fuel Sender Wrench

1

07ZAJ-S5A0200

Oil Pressure Hose

1

-1

07406-0020201

A/T Pressure Hose

1

-2

07406-0070300

A/T Low Pressure Gauge W/Panel

1

-3

07MAJ-PY4011A

A/T Pressure Hose, 2,210 mm

1

-4

07MAJ-PY40120

A/T Pressure Hose, Adapter

1

07406-004000B

Fuel Pressure Gauge

1

07AAJ-S6MA150

Fuel Pressure Gauge Attachment Set

1

-1,

-2,

-3,

-4

05/06/27 17:31:09 61S6M040_110_0002

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Intermittent Failures

Opens and Shorts

How to Use the HDS (Honda Diagnostic
System) or an OBD II Scan Tool

If the MIL (Malfunction Indicator Lamp) has come on

If the MIL did not stay on

If you can’t duplicate the DTC

11-3

General Troubleshooting Information

A

A

The term ‘‘intermittent failure’’ means a system may
have had a failure, but it checks OK now. If the
malfunction indicator lamp (MIL) on the dash does not
come on, check for poor connections or loose pins at all
connectors related to the circuit that you are
troubleshooting. If the MIL was on but then went out,
the original problem may have been intermittent.

‘‘Open’’ and ‘‘Short’’ are common electrical terms. An
open is a break in a wire or at a connection. A short is
an accidental connection of a wire to ground or to
another wire. In simple electronics, this usually means
something won’t work at all. With complex electronics
(such as ECMs and PCMs) this can sometimes mean
something works, but not the way it’s supposed to.

1. Start the engine and check the MIL (A).

NOTE: If the ignition switch is turned ON (II), and
the engine is not started, the MIL will stay on for
15

20 seconds (see page 11-90).

2. If the MIL stays on, connect the HDS or an OBD II

scan tool to the data link connector (DLC) (A)
located under the driver’s side of the dashboard.

3. Turn the ignition switch ON (II).

4. Check the diagnostic trouble code (DTC) and note it.

Also check the freeze data. Refer to the indicated
DTC’s troubleshooting, and begin the appropriate
troubleshooting procedure.

NOTE:

• Freeze data indicates the engine conditions when

the first malfunction, misfire, or fuel trim
malfunction was detected.

• The HDS or a scan tool can read the DTC, freeze

data, current data, and other engine control
module (ECM)/powertrain control module (PCM)
data.

• For specific operations, refer to the user’s

manual that came with the HDS or a scan tool.

5. If no DTCs are found, go to MIL troubleshooting

(see page 11-248).

If the MIL did not stay on, but there is a driveability
problem, do the symptom troubleshooting.

Some of the troubleshooting requires you to reset the
ECM/PCM and try to duplicate the DTC. If the problem is
intermittent and you can’t duplicate the code, do not
continue through the procedure. To do so will only
result in confusion and possibly, a needlessly replaced
ECM/PCM.

(cont’d)

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０３

ECM/PCM Reset (2002-2004 Models)

Reset the ECM/PCM with the OBD II scan
tool or the HDS

Reset the ECM/PCM by removing the fuse

HDS Clear Command (2005-2006 Models)

Scan Tool Clear Command

DTC Clear (2005-2006 Models)

11-4

Fuel and Emissions Systems

General Troubleshooting Information (cont’d)

A

B

You can reset the ECM/PCM in either of two ways:

NOTE: After resetting the ECM/PCM do the ECM/PCM
idle learn procedure (see page 11-349).

1. Turn the ignition switch ON (II). Do not start the

engine.

2. Use the OBD II scan tool or the HDS to reset the

ECM/PCM.

NOTE: For the specfic operations, refer to the user’s
manual that came with the OBD II scan tool or the
HDS.

1. Turn the ignition switch OFF.

2. Remove the No. 6 ECU (ECM/PCM) (15 A) fuse (A)

from the under-hood fuse/relay box (B) for
10 seconds.

The ECM/PCM stores various specific data to correct the
system even when there is no electrical power such as
the battery negative terminal or No. 6 FI ECU (ECM/
PCM) (20 A) fuse are disconnected. Stored data based
on failed parts should be cleared by using the ‘‘CLEAR
COMMAND’’ of the HDS, if parts are replaced.

The HDS has three kinds of clear commands to meet
this purpose. They are DTC clear, ECM/PCM reset, and
CKP pattern clear. DTC clear command erases all stored
DTC codes, freeze data and readiness codes. This must
be done with the HDS after reproducing the DTC during
troubleshooting.
The ECM/PCM reset command erases all stored DTC
codes, freeze data, readiness codes, and all specific
data to correct the system except CKP pattern. If the
CKP pattern data in ECM/PCM was cleared, you must do
the CKP pattern learn procedure. The CKP pattern clear
command erases only CKP pattern data. This command
is for repair of a misfire or the CKP sensor.

If you are using a generic scan tool to clear commands,
be aware that there is only one setting for clearing the
ECM/PCM, and it clears all commands at the same time
(CKP pattern learn, idle learn, readiness codes, freeze
data, on-board snapshot, and DTCs). After you clear all
commands, you then need to do these procedures, in
this order: ECM/PCM idle learn procedure, 2002-2004
models (see page 11-349), 2005-2006 models (see page
11-349); CKP pattern learn procedure (2005-2006
models); Test-drive to set readiness codes to complete
(see page 11-90).

1. Clear the DTC with the HDS while the engine is

stopped.

2. Turn the ignition switch OFF.

3. Turn the ignition switch ON (II). Wait 30 seconds.

4. Turn the ignition switch OFF, and disconnect the

HDS from the DLC.

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ECM/PCM Reset (2005-2006 Models)

CKP Pattern Clear/CKP Pattern Learn
(2005-2006 Models)

How to End a Troubleshooting Session
(required after any troubleshooting)

11-5

This command clears stored specific data from each
vehicle such as DTCs, freeze data, and readiness codes.
It does not clear CKP PATTERN data.

1. Reset the ECM/PCM with the HDS while the engine

is stopped.

2. Turn the ignition switch OFF.

3. Turn the ignition switch ON (II). Wait 30 seconds.

4. Turn the ignition switch OFF, and disconnect the

HDS from the DLC.

5. Do the ECM/PCM idle learn procedure (see page

11-349).

NOTE: The ECT needs to be at 176 °F (80 °C) or higher.

1. Clear the CKP PATTERN CLEAR with the HDS while

the engine is stopped.

2. Turn the ignition switch OFF.

3. Turn the ignition switch ON (II), and wait

30 seconds.

4. Test-drive the vehicle on a level road: decelerate

(with the throttle fully closed) from an engine speed
of 2,500 rpm to 1,000 rpm with the A/T 2nd gear in
M position, or the M/T in 2nd or 3rd gear.

5. Stop the vehicle. Do not turn the ignition off.

6. Select the ALL DATA LIST in the DATA LIST MENU

of the HDS.

7. Check the status of PULSER F/B LEARN. If it is set to

NG, the enable criteria was probably not met;
repeat the procedure from the beginning.

1. Reset the ECM/PCM with the HDS.

2. Do the ECM/PCM idle learn procedure.

• 2002-2004 models (see page 11-349).
• 2005-2006 models (see page 11-349).

3. Turn the ignition switch OFF.

4. Disconnect the HDS or the OBD II scan tool 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. In order for the engine
to start, you must rewrite the immobililzer code
with the HDS.

(cont’d)

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