How to Troubleshoot A/T Systems

How to Check for DTCs with the PGM Tester/Scan Tool


When the Powertrain Control Module (PCM) senses an abnormality in the input or output systems, the [D] indicator (A) in the gauge assembly (B) will usually blink.

 

When the 16P Data Link Connector (DLC) (A) (located under the dash behind the center console) is connected to the OBD Scan Tool or Honda PGM Tester (B), it will indicate the Diagnostic Trouble Code (DTC) when the ignition switch is turned ON (II).

NOTE: The illustration shows LHD model; RHD is symmetrical.

 

If the [D] indicator or MIL has been reported on, or if a driveability problem is suspected, follow this procedure:

1.Connect the OBD Scan Tool or Honda PGM Tester to the DLC. (See the OBD Scan Tool or Honda PGM Tester user's manual for specific instructions. If you are using the Honda PGM Tester, make sure it is set to the SAE DTC type).

2.Turn the ignition switch ON (II), and observe the DTC on the screen.

3.Record all fuel and emissions DTCs, A/T DTCs, and freeze data.

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

5.Reset the DTC stored in the PCM with the OBD Scan Tool or PGM Tester.

6.Drive the vehicle for several minutes under the same conditions as those indicated by the freeze data, or at speeds over 30 mph (50 km/h), and then recheck for DTC(s). If the A/T DTC returns, go to the DTC Troubleshooting Index. 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.

7.Reset the radio preset stations, and set the clock.

NOTE: You can also check for DTCs with SCS signal terminals short-circuited using with the special tool (DLC pin box 07WAJ-0010100) (see section Appendix).

How to Troubleshoot Circuits at the PCM


1.Remove the glove box stops, then bring the glove box down.

2.Loosen the mounting nut (A) on the lower portion of the PCM (B), and remove the mounting bolt (C) and nut (D).

NOTE: The illustration shows LHD model; RHD is symmetrical.

 

3.Lift the PCM up to clear the mounting nut on the lower portion of the PCM, then pull out the PCM.

4.Inspect the circuit on the PCM, according to the DTC troubleshooting with a digital multitester (A) and tapered tip probe (B) as shown.

 

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.

PCM Reset Procedure


1.Write down the radio station presets.

2.Turn the ignition switch OFF.

3.Remove the No. 6 ECU fuse (15A) (A) from the under-hood fuse/relay box (B) for more than 10 seconds.

 

How to End a Troubleshooting Session


This procedure must be done after any troubleshooting.

1.Turn the ignition switch OFF.

2.Disconnect the Honda PGM tester (A) from the DLC (B).

NOTE: The illustration shows LHD model; RHD is symmetrical.

 

3.Reset the PCM.

4.Turn the ignition switch ON (II).

5.To verify that the problem is repaired, test-drive the vehicle for several minutes at speeds over 30 mph (50 km/h).