164589, 200049 diode and cap in same physical area as the output. Also check
the blue caps in the same area for signs of swelling indicating failure.
These are common failure components: if these components do not fix the pcc
problem then you will need a schematic and do a bit of trouble shooting in
the actual pcc circuit. Ther are at least 2 different physical circuit
configurations dealing specificaly with pcc in the 169 run of chassis.