Without Scan Tool

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 D4 indicator light in the gauge assembly may blink. When the Service Check Connector (2P) (located under the dash on the passenger side) is connected with the special tool as shown, the D4 indicator light will blink the Diagnostic Trouble Code (DTC) when the ignition switch is turned ON (II).
When the D4 indicator light has been reported on, connect the Service Check Connector (2P) to the special tool. Then turn ON (II) the ignition switch and observe the D4 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 determining the code, refer to the electrical system Symptom-to Component Chart.
1. Remove the kick panel on the passenger's side. Refer to Body and Frame.





2. Remove the PCM, and turn it over.
3. Inspect the circuit on the PCM according to the troubleshooting flowchart with the special tools and a digital multimeter.

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.

PCM Reset Procedure
1. Turn the ignition switch off.





2. Remove the BACK UP fuse (7.5 A) from the under-hood fuse/relay box for 10 seconds to reset the PCM.

NOTE:
- Disconnecting the BACK UP fuse also cancels the radio preset stations and clock setting. Make note of the radio presets before removing the fuse so you can reset them.
- The PCM memory can also be cleared by using the OBD II Scan Tool or Honda PGM Tester.

Final Procedure
This procedure must be done after any troubleshooting.
1. Turn the ignition switch OFF.
2. Reset the PCM.
3. 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 (2P).
4. Turn the ignition switch ON (II), and set the radio presets and clock setting.
5. To verify the problem is repaired, test-drive the vehicle for several minutes at speeds over 30 mph (50 km/h).