vt clubby 5ltr code 42

[vscaprice98]

hey got code 42 for the vt clubsport 5 ltr
code being timing electronic spark timing bypass circut?
would that be the hall sensor?

[BlackVXGTS]

Below is a description of the problem. Have your tried resetting the DTCs (disconnect battery for a couple of mins) to check if you have a hard problem? The service manual indicates that the cause is either the PCM, ignition module or the wiring between the ignition module and PCM. Easiest first step would be to see if you can borrow an ignition module off someone to see if that's the problem.

CIRCUIT DESCRIPTION:
There are two modes of ignition system operation. The BYPASS timing mode, and the ELECTRONIC SPARK
TIMING mode. The bypass mode is normally used while starting the engine. The Electronic Spark Timing mode is
used to allow the PCM to control the ignition system after the engine is running. The PCM controls a "Bypass
control circuit", used to control the ignition module between the two different ignition system modes.
The PCM's Electronic Spark Timing (EST) output circuitry generates EST output pulses anytime crankshaft
reference input pulses are received. The PCM also monitors it's EST output terminal, to monitor if and when EST
pulses are present.
When the ignition system is operating in the Bypass mode (such as when the engine is cranking), the ignition
module earths the EST pulses coming from the PCM. Because the EST pulses should be earthed through the
ignition module during Bypass mode operation, the PCM should not detect EST pulses on the EST output terminal.
DTC 42 WILL SET IF:
• The engine speed is greater than 1600 RPM.
• The PCM does not receive any EST pulses within 400 ms.
When a DTC 42 is set, the ignition will run in the bypass mode.