S2000 L4-1997cc 2.0L DOHC (VTEC) MFI (2001)
Control Assembly: Testing and Inspection
Heater Control Power and Ground Circuits Troubleshooting
1. Check the No.54 (30 A) fuse in the main under-hood fuse/relay box, and the No.20 (7.5 A) and No.25 (7.5 A) fuses in the under-dash fuse/relay
box.
Are the fuses OK?
YES - Go to step 2.
NO - Replace the fuse(s), and recheck.
2. Disconnect the heater control panel 30P connector.
3. Turn the ignition switch ON (II).
4. Measure the voltage between the No.30 terminal of the heater control panel 30P connector and body ground.
Is there battery voltage?
YES - Go to step 5.
NO - Repair open in the wire between the No.20 fuse in the under-dash fuse/relay box and the heater control panel.
5. Turn the ignition switch OFF.
6. Measure the voltage between the No.29 terminal of the heater control panel 30P connector and body ground.
Is there battery voltage?
YES - Go to step 7.
NO - Repair open in the wire between the No.25 fuse in the under-dash fuse/relay box and the heater control panel.