3.2TL TYPE S V6-3.2L SOHC (2002)
Multiplex Control Unit, Door
14. Look in the following tables for the switch most closely related to the problem. While still in Mode 2, operate the switches to test the circuits
between the switches and their control units. If the circuit is OK, the ignition key light should blink once and the beeper should beep once. If the
circuit is faulty, There will be no indication.
Does the ignition key light blink and beeper beep?
YES - The circuit is OK. Refer to the test(s) for that individual system.
NO - Go to step 15.
In each table, the control unit is followed by a list of circuits that it can check in Mode 2.
The key cylinder switches should only beep/flash when turned to LOCK or UNLOCK. If they beep/flash when returning to the neutral position, the
switch is defective or misaligned. Adjust or replace the affected key cylinder switch.
15. Check 2 or 3 more circuits listed for that control unit.
Does the ignition key light blink and the beeper beep for each circuit?
YES - The additional circuits are OK. Repair the short or open in the circuit that failed the test in the preceding step.
NO - Multiplex failed circuits can mean that the control unit has failed without triggering a DTC. Test a few more circuits. If they also fail,
substitute a known-good control unit, then recheck. If the system works properly, the original control unit is faulty, replace it. There is still a
malfunction, substitute a know-good control unit for the next most likely faulty control unit, then recheck. If the system works properly, that
control unit is faulty; replace it.
