Both those codes have to do with harness problems (either "shorts" or "opens") between the ignition pack and the PCM. The harness is rather straight-forward ... with no harness connectors between the two. It needs to be inspected for damage.
Take note that several of the '99 - '01's had damage to the harness near the firewall at the ac tubing area ... caused by an manufacturing issue, but does not show up for several thousand miles. The wipers and plastic cowling need to come off for a thorough inspection. This is not a big task ... just looks a little scary (sp?).
The ignition pack wiring is as follows: (Disconnect battery before making continuity checks)
Red wire ... hot in "start" or "run" ... fed by fuse #1 in battery fuse box. Look in your glove box manual under "roadside emergencies" for fuse identification.
Dark Blue/Light Green ... goes to terminal 26 on the PCM ... check for continuity between the pack connnector and the PCM connector. Also check to see there is no shorting to ground or other conductors ... easily done at PCM connector.
Red/Light Blue ... goes to terminal 52 on the PCM ... ditto.
Pink/White ... goes to terminal 78 on the PCM ... ditto with check.
With a continuity testor or a voltmeter, this should not take over 1 hour to isolate. Sorry I can't be more help ... but about to leave town for a few days.
Good luck!