Multiplex Wake-up Test
- From the sleep mode, wake-up the multiplex system by performing one of the following operations:
- As the system shifts to its active (wake-up) mode, communication wire voltage will return to 4-10 V and the battery terminal current will return to 70-80 mA.
- If the system does not go into sleep mode or wake-up properly, perform the Multiplex Control Unit Input Test (see Multiplex Control Unit Input Test ).
NOTE:
If multiple circuits fail to respond in the mode 2 tests and/or the multiplex circuit fails to go into sleep mode or wake-up, it may mean that a control unit failed without triggering a DTC in mode 1. Perform the Multiplex Control Unit Input Test (see Multiplex Control Unit Input Test
). If the input test confirms that all the inputs are working properly, substitute a known-good multiplex control unit, gauge assembly, the keyless receiver unit, or ECM/PCM one at a time. If the system works properly after swapping one of the above components, replace the original component, it is faulty.