TSX L4-2.4L (2005)
box, power window master switch, wiper/washer switch and gauge one at a time, in that order, and recheck for the DTCs after each
substitution.
-
DTC 1 only: Go to MICU input test.
-
DTC 2 only (no other DTCs present): Go to the relay module input test. If all inputs are OK, substitute a known-good relay module and then a
MICU, one at a time, and then check for DTCs. If a DTC recurs after a substitution, replace that unit.
-
DTC 3 only (no other DTCs present): Go to the door multiplex control unit input test. If all inputs are OK, substitute a known-good door
multiplex control unit and then a MICU, one at a time, and then check for DTCs. If a DTC recurs after a substitution, replace that unit.
-
DTC 4 only (no other DTCs present): Go to the combination switch control unit input test. If all inputs are OK, substitute a known-good
wiper/washer switch and then a MICU, one at a time, and then check for DTCs. If a DTC recurs after a substitution, replace that unit.
-
DTC 5 only (no other DTCs present): Go to the gauge control module input test. If all inputs are OK, substitute a known-good gauge control
module and then a MICU, one at a time, and then check for DTCs. If a DTC recurs after a substitution, replace that unit.
8. Check for B-CAN DTCs indicated by the gauge control module while still in Test Mode 1.
Are any DTCs indicated?
YES - Go to step 9.
NO - Go to step 11.
9. Record all DTCs and sort them by type using the DTC Troubleshooting.
10. Troubleshoot the DTCs in the following order:
-
Battery voltage DTCs
-
Internal error DTCs
-
Loss of communication DTCs (begin with the lowest number first; for example, if B1006 and B1059 are retrieved, troubleshoot B1006 first)
-
Signal error DTCs
Test mode 2
11. Remove the MPCS service connector from the under-dash fuse/relay box socket for 5 - 10 seconds, then re-insert it.
NOTE: If the MPCS connector is disconnected for too short or too long of a time, or the ignition switch is turned OFF, the system will return to
Test Mode 1.
