Acura RL. Instruction — page 208

Fig. 3: Identifying D Indicator In Gauge Control Module
Courtesy of AMERICAN HONDA MOTOR CO., INC.

When the Honda Diagnostic System (HDS) is connected to the data link connector (DLC) (A) located under the
left side of the dash, it will indicate the diagnostic trouble code (DTC) when the ignition switch is turned to ON
(II) and the appropriate menu is selected.

Fig. 4: Identifying Data Link Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

If the D indicator or the malfunction indicator lamp (MIL) has been reported on, or if a driveability problem is
suspected, do this:

1. Connect the HDS to the DLC. (Seethe HDS user’s manual for specific instructions.)

2. Turn the ignition switch to ON (II), select A/T system, and observe the DTC in the DTCs MENU on the

HDS screen.

NOTE:

If the HDS does not communicate with the PCM, troubleshoot the DLC
circuit; ’05-07 models (see ’05-07 MODELS ), ’08 model (see ’08 MODEL ).

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3. Record the freeze data and on-board snapshots for all fuel and emissions DTC, and A/T DTCs.

4. If there is a fuel and emissions DTC, first check the fuel and emissions system as indicated by the DTC

(except for DTC P0700, which means there is one or more A/T DTCs, and no problems were detected in
the fuel and emissions circuit of the PCM).

5. Clear the DTC and data.

6. Drive the vehicle for several minutes under the same conditions as those indicated by the freeze data, and

then recheck for a DTC. If the A/T DTC returns, go to the INDICATED DTCS
TROUBLESHOOTING
. If the DTC does not return, there was an intermittent problem within the
circuit. Make sure all pins and terminals in the circuit are tight.

Symptom Troubleshooting Versus DTC Troubleshooting

Some symptoms will not trigger diagnostic trouble codes (DTCs) or cause the D indicator to blink. If the
malfunction indicator lamp (MIL) was reported ON or the D indicator has been blinking, check for DTCs. If the
vehicle has an abnormal symptom, and there are no DTCs stored, do the symptom troubleshooting. Check the
list of probable cause(s) for the symptom, in the sequence listed, until you find the problem.

How to Check for DTCs with the SCS Mode (retrieving the flash codes)

When the PCM senses an abnormality in the input or output system, the D indicator (A) in the gauge control
module (B) will usually blink.

Fig. 5: Identifying D Indicator In Gauge Control Module
Courtesy of AMERICAN HONDA MOTOR CO., INC.

When the D indicator has been reported on, connect the HDS to the DLC (A) located under the left side of the
dash. Turn the ignition switch to ON (II), select SCS mode, then the D indicator will flash the DTC.

NOTE:

The preferred method is to use the HDS to retrieve the P-code.

2007 Acura RL

2005-08 TRANSMISSION Automatic Transmission — RL

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© 2005 Mitchell Repair Information Company, LLC.

Fig. 6: Identifying Data Link Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

If the D indicator and the MIL come on at the same time, or if a driveability problem is suspected, do this:

1. Connect the HDS to the DLC. (See the HDS user’s manual for specific instructions.)

2. Turn the ignition switch to ON (II), select SCS mode, then observe the D indicator in the gauge control

module. Codes 1 through 9 are indicated by individual short blinks. Code 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.

Fig. 7: Identifying DTC Blinking Pattern
Courtesy of AMERICAN HONDA MOTOR CO., INC.

3. Record all fuel and emissions DTCs and A/T DTCs.

4. If there is a fuel and emissions DTC, first check the fuel and emissions system as indicated by the DTC

(except DTC 70, which means there is one or more A/T DTCs, and no problems were detected in the fuel
and emissions circuit of the PCM).

5. Clear the DTC and data.

6. Drive the vehicle for several minutes under the same conditions as those indicated by the freeze data, and

then recheck for DTC. If the A/T DTC returns, go to the INDICATED DTCS TROUBLESHOOTING.

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2005-08 TRANSMISSION Automatic Transmission — RL

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© 2005 Mitchell Repair Information Company, LLC.

If the DTC does not return, there was an intermittent problem within the circuit. Make sure all pins and
terminals in the circuit are tight.

How to Troubleshoot Circuits at the PCM

Special Tools Required

Backprobe set 07SAZ-001000A (two required)

1. Pull back the carpet, and remove the passenger’s front console cover and rear vent duct (see step 5 under

CENTER CONSOLE REMOVAL/INSTALLATION ).

2. Inspect the circuit on the PCM, according to the DTC troubleshooting, with the special tools and a digital

multimeter.

3. Connect the backprobe adapters (A) to the stacking patch cords (B), and connect the cords to a multimeter

(C).

Fig. 8: Connecting Backprobe Adapters To Stacking Patch Cords
Courtesy of AMERICAN HONDA MOTOR CO., INC.

4. 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 touches the end of the wire terminal.

5. If you cannot get to the wire side of the connector or the wire side is sealed, disconnect the connector and

use the tester probe to probe the connectors from the terminal side. Do not force the probe into the
connector.

How to Clear A/T DTCs

1. Connect the HDS to the DLC (A).

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