Acura 2002 RSX Service Manual page 1119

9. Measure lhe voltage between the No. 6 terminal of
ECM/PCM connector B (24P) and body ground with
the EcM/PCM connectors connected.
ECM/PCM CONNECTOR B eirP)
Wire side of female terminals
ls thete battety voltage?
YES Update the ECM/PCM if it does not have the
latest so{tware, or substitute a known-good ECM/
PCM, then recheck (see page 11-6). lf the symptom/
indication goes away with a known-good ECM/PCM,
replace the original ECM/PCM. I
NO - Repair open in the wire between the radiator
fan relav, the 60ndenser fan relay and the
ECM/PCM. r
Compressor Clutch Circuit
Troubleshooting
1. Check the No. 1 (30A) fuse in the under-hood
fuse/relay box, and the No 14 (10A) fuse in the
under-dash fuse/relaY box.
Are the fuses OK?
YES-Go to step 2.
NO-Replace the fuse(s), and recheck.l
2. Check the engine coolant temperalure, the throttle
position sensor, and the idle speed (use the Honda
PGM Tester PGM-FI data list if possible).
ls the coolant temperaturc above notmal, the
throttle position sensor teading too high, or the
idle speed to low?
YES - Trou bleshoot and repair the cause of the
high engine coolant temperature, high throttle
position sensor reading, or low idle speed l
NO- Go to step 3.
3. Remove the compressor clutch relay ftom the
under-hood fuse/relay box, and test it (see page 22-
ls the relay OK?
YES- Go to step 4.
NO Replace the compressor clutch relay.l
4. Measure the voltage between the No. 2 terminal of
the compressor clutch relay 4P socket and body
ground.
ts therc battery voltage?
YES - Go to step 5.
NO Replace the under-hood tuse/relay box.l
(cont'd)
21-35