Acura RL (1996-2004 year). Manual — part 423
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Checking the Diagnostic Trouble Code (DTC)
with the Service Check Connector and Special Tool
When the PCM senses an abnormality in the input or output systems, the indicator light in the gauge assembly will blink.
When the Service Check Connector (located under the dash on the passenger side) is connected with the special tool as
shown, the indicator light will blink the Diagnostic Trouble Code (DTC) when the ignition switch is turned ON (II).
When the indicator light has been reported on, connect the Service Check Connector with the special tool.
Then turn the ignition switch ON (II) and observe the indicator light.
INDICATOR
LIGHT
Codes 1 through 9 are indicated by individual short blinks. Codes 10 and above are indicated by a series of long and short
blinks. One long blink equals 10 short blinks. Add the long and short blinks together to determine the code. After deter-
mining the code, refer to the electrical system Symptom-to-Component Chart on pages
and
NOTE:
• Disconnecting the BACK UP, RADIO fuse also cancels the radio anti-theft code, preset stations and the clock setting. Get
the customer's code number, and make note of the radio presets before removing the fuse so you can reset them.
• The PCM memory must be reset after reconnecting the battery or the BACK UP, RADIO fuse (see page
SCS SERVICE CONNECTOR
GAUGE ASSEMBLY
SERVICE CHECK
CONNECTOR (2P)
Main Menu
Table of Contents
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Troubleshooting Procedures
(cont'd)
SRS components are located in this area. Review the SRS component locations, precautions, and procedures in the SRS
(
) before performing repairs or service.
1. Remove the right door sill molding (see
).
2. Pull the carpet back to expose the PCM.
3. Remove the PCM cover mounting nuts, then turn the PCM over.
PCM COVER
PCM
4. Inspect the circuit on the PCM according to the troubleshooting flowchart with the special tools and a digital multime-
ter as shown.
How to use the Backprobe Set
Connect the backprobe adapters to the stacking patch cords, and connect the cords to a multimeter. Using the wire
insulation as a guide for the contoured tip of the backprobe adapter, gently slide the tip into the connector from the
wire side until it comes in contact with the terminal end of the wire.
BACKPROBE
ADAPTER
DIGITAL MULTIMETER
(Commercially available)
KS - AHM - 32 - 003,
or equivalent
BACKPROBE SET
(two required)
BACKPROBE
ADAPTER
STACKING PATCH
CORDS
MOUNTING
NUT
Main Menu
Table of Contents
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PCM Reset Procedure
1. Make sure you have the anti-theft code for the radio, then write down the frequencies for the radio's preset buttons.
2. Turn the ignition switch OFF.
3. Remove the No. 56 BACK UP, RADIO fuse (7.5 A) from the under-hood fuse/relay box for 10 seconds to reset the PCM.
NOTE:
• The A/T control system memory cannot be cleared by using the OBD II Scan Tool or Honda PGM Tester; be sure to
remove the BACK UP, RADIO fuse to reset the A/T control system memory.
• The PCM memory must be reset after reconnecting the battery or the BACK UP, RADIO fuse (see page
).
BACK UP, RADIO
(7.5 A) FUSE
UNDER-HOOD
FUSE/RELAY BOX
Final Procedure
NOTE: This procedure must be done after any troubleshooting.
1. Turn the ignition switch OFF.
2. Disconnect the OBD II Scan Tool or Honda PGM Tester from the Data Link Connector (16P), or remove the special tool
from the Service Check Connector.
3. Reset the PCM.
4. Turn the ignition switch ON (II).
5. Enter the anti-theft code for the radio, then enter the customer's radio station presets.
6. Memorize the engine idle speed signal in the PCM (see page
).
Main Menu
Table of Contents
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Symptom-to-Component Chart
Electrical System
DTC*: The DTC in parentheses is the code the indicator light indicates when the service check connector is connected
to the special tool (SCS service connector).
Main Menu
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