RL V6-3474cc 3.5L (1998)
Information Bus: Diagnostic Trouble Code Tests and Associated Procedures
Wake-Up Function Test
Wake-up Function Test
Description
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When the ignition switch is turned ON (II) all of the multiplex control units wake up at the same time. In this case, the wake up lines and
communication lines are not involved in the wake up function.
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When a switch related to the multiplex control unit (door) is operated:
First, the door multiplex control unit wakes up, then the control unit starts to communicate to the driver's control unit. By this communication, the
driver's control unit wakes up. The driver's control unit wakes the passenger's control unit up by the wake up line, and all the control units Start to
function.
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When a switch related to the multiplex control unit Driver's or passenger's is operated.
The control unit related to the operated switch wakes up, then the control unit wakes up the other unit. (In this case. the door control unit does not
wake up.)
Related Switch (Input) Table
Related Switch (Input)
The switches and input signals that can wake up the multiplex control unit are shown in table.
Confirming the Function
1. Shifting to the sleep mode:
1. Turn the ignition switch OFF.
2. Cancel the key-off operation timer in power window system by opening and closing one of the front doors.
3. Make sure that the trunk is closed. and exterior lights are OFF.
4. If you do not operate the switches related to the multiplex control units more than one minute after meeting the above conditions, the system
function shifts to the sleep mode.
(All of the switches must be turned OFF except door lock knob switches, ignition key switch, audio switch and hood switch).
2. Confirming the sleep mode:
1. Check for voltage between the wake up line PNK/BLU wire between driver's and passenger's control units. There should be no voltage with
the sleep mode OFF.
There should be battery voltage with the sleep mode ON.
2. Check for voltage between each communication line and body ground while shifting to the sleep mode. There should be no voltage.
3. Check the parasitic draw at the battery while shifting to the sleep mode. The ampere should change from 100 mA to less than 100 mA.
3. Confirming the wake up mode:
After confirming the sleep mode. turn the related switch (see previous table) ON, and wake up each control unit. If all of the operations works
properly. the wake up mode is OK.
