Radiator Fan and A/C Condenser Fan Circuit Troubleshooting

1. Connect the HDS to the DLC (see step 2 on HOW TO USE THE HDS (HONDA DIAGNOSTIC SYSTEM) ).
2. Turn the ignition switch to ON (II), and select RADIATOR FAN in the PGM-FI INSPECTION menu with the HDS.

   Does the radiator fan and the A/C condenser fan run? 

   YES  -Fan circuit is OK.

   NO  -Go to step 3.

3. Turn the ignition switch to LOCK (0).
4. Disconnect the RFC unit 3P connector.
5. Check for continuity between RFC unit 3P connector terminal No. 2 and body ground, then terminal No. 3 and body ground.

Fig 1: Checking Continuity Between RFC Unit 3P Connector Terminal No. 2 And Body Ground

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity? 

YES  -Replace the RFC unit (see A/C CONDENSER FAN CIRCUIT TROUBLESHOOTING (SHORT) ).

NO  -Check for an open in the wire between RFC unit 3P connector terminals No. 2, No. 3, and body ground. If the wire is OK, check for a poor ground at G301.