| 1. | Check the No. 36 (10 A) fuse in the under-dash  fuse/ relay box. Is the fuse OK? YES - Go to  2. NO - Replace the fuse, and recheck.n  | 
| 2. | Disconnect the climate control unit 32P connector. | 
| 3. | Turn the ignition switch ON (II). | 
| 4. | Measure the voltage between the climate control unit 32P connector terminal No. 3 and body ground. 
 Is there battery voltage? YES - Go to  5. NO - Repair an open in the wire between the No. 36 fuse in the under-dash fuse/relay box and the climate control unit.n  | 
| 5. | Turn the ignition switch OFF. | 
| 6. | Check for continuity between the climate control unit 32P connector terminal No. 5 and body ground. 
 Is there continuity? YES - Check for loose wires and poor connections at the climate control unit 32P connector. If connections are good, substitute a known-good climate control unit and recheck. If the symptom/indication goes away, replace the original  climate control unit.n NO - Check for an open in the wire between the climate control unit and body ground. If the wire is OK, check for poor ground at G504.n  |