Question about 1998 Plymouth Grand Voyager
The manual for the codes p1698 suggests that using the diagnostic readout box that you remove the plugs at the tcm and the pcm then by jumper ground the bus + and the bus - wires, one at a time at each plug and see whether the drb notices the grounding of each of those 4 wires by giving you a message "short to ground". If not for any one of those jumps. then trace the wiring from the plug to the diagnostic connector to find out where it is 'open'. I assume that the CCD + and - wires are never grounded in the normal state of affairs, so if you grounded pins 59 and 60 at the PCM and didn't see a ground by means of an ohmmeter to ground when you looked at 11 and at 3 of the diagnostic port, respectively, that would revel an open to be found. Similarly, if you grounded pin 4 and pin 43 of the TCM and didn't 'see' it at 11 and at 3 respectively then look for the opening in the wiring between the two points that didn't see it. Otherwise, with no other codes than those, and if you detect all the self-imposed shorts to ground, then the manual says to replace the modules whose wiring was proved to be OK.
Posted on Aug 24, 2010
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Posted on Jan 02, 2017
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