The three waveforms below are taken from the #1 and #4
injectors. The top waveform is from the high side (feed side) of the #1
and #4 injectors, while the middle waveform is from the low side (ground
side) of the #1 injector and the bottom waveform is from the low side
of the #4 injector.
The middle waveform is the same as the top waveform because
there is no ground for the circuit. With no current flowing in the
circuit, the #1 injector is not energized and fuel does not flow.
The bottom waveform shows that ground is supplied and there
is a voltage drop across the #4 injector. With current flowing in the
circuit, the #4 injector is energized and fuel flows.
Panoramaroof Switch: Repair procedures
Inspection
1.
Disconnect the negative (-) battery terminal.
2.
Remove the overhead console lamp assembly.
(Refer to the BD group - "Roof trim")
3.
Check for continuity between the termina ...
Description and Operation
Description
Ignition timing is controlled by the electronic control
ignition timing system. The standard reference ignition timing data for
the engine operating conditions are preprogrammed in ...