RSX L4-2.0L (VTEC) (2002)
Is there continuity?
YES - Faulty under-dash fuse/relay box. Replace and check for DTCs.
NO - Repair the open in the wire, and recheck for DTCs.
8. About 1 second after you go into self-diagnosis mode 1, the ceiling light will indicate the DTC, and repeat it every 3 seconds. If there is more than
one DTC, the system will indicate them in ascending order, beginning from the DTC with the lowest numerical value. Troubleshoot the DTCs as
indicated below:
-
DTC 1, 2, and 3 (ECM/PCM P0600) simultaneously: Check for a short to body ground in the YEL wire between multiplex control unit terminal
E10 and ECM/PCM terminal E24, and in the WHT/GRN wire between multiplex control unit terminal K10 and gauge assembly terminal B13. If
both wires are OK, substitute a known-good multiplex control unit, gauge assembly, and ECM/PCM one at a time, in that order, and recheck for
the DTCs after each substitution.
-
DTC 2 and 5 simultaneously: Check for an open in the YEL wire between multiplex control unit terminal E10 and ECM/PCM terminal E24, If the
wire is OK, substitute a known-good multiplex control unit, gauge assembly, and ECM/PCM one at a time, in that order, and recheck for the DTCs
after each substitution.
-
DTC 1, and 6 simultaneously: Check for an open in the WHT/GRN wire between multiplex control unit terminal K10 and gauge assembly
terminal B13, If the wire is OK, substitute a known-good multiplex control unit, gauge assembly, and ECM/PCM one at a time, in that order, and
recheck for the DTCs after each substitution.
-
DTC 1 only (no other DTCs present): Substitute a known-good multiplex control unit, and a gauge assembly one at a time, in that order, and
recheck for the DTCs after each substitution.
-
DTC 2 only (no other DTCs present): Substitute a known-good multiplex control unit and a ECM/PCM one at a time, in that order, and recheck
for the DTCs after each substitution.
-
DTC 3 only (no other DTCs present): Substitute a known-good multiplex control unit and recheck for the DTC.
-
DTC 5 only (no other DTCs present): Substitute a known-good gauge assembly, and recheck for the DTC.
-
DTC 6 only (no other DTCs present): Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM, then
recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM.
9. From Mode 1, disconnect the special tool from the multiplex control inspection connector for about 10 seconds, then reconnect it. The ceiling
light should come on for 2 seconds, then blink twice more at 0.2 second intervals. This means the system has gone from Mode 1 to Mode 2.
NOTE: To cancel mode 2, disconnect the SCS service connector from the multiplex control inspection connector for more than 10 seconds or