My mistake. Here 's how to check it.
Connect Diagnostic Read-Out Box (C-4805) to connector near left front shock tower. Set read/hold switch to "READ" position. Open carburetor switch by placing fast idle speed adjusting screw on highest step of fast idle cam.
Fig. 8: Diagnostic Read-Out Box
Turn ignition switch to "RUN" position and wait for "o" to appear on read-out box display. Move read/hold switch to "HOLD" position. Record all codes. If Codes 88-55 or 88-14-5 appear, there are NO fault codes. Proceed to NS6B.
If Codes 88-21-55 or 88-14-21-5 appear, fault is in distributor pick-up coil circuit. Proceed to NS6C (dual pick-up distributor) or NS6D (single pick-up distributor).
If Codes 88-21-26-28-55 or 88-14-21-26-28-5 appear, fault is in distributor/sensor ground circuit. Repair wire to terminal "9" of computer 10-pin connector for an open circuit.
If NO Code 88, proceed to NS6F.
Check pick up coil in distributor 150-900 ohms if no resistance replace it or if to high
Ensure 10-way computer connector and the distributor connector are disconnected. Connect ohmmeter between cavity No. 5 of the 10-way connector and cavity No. 3 of the distributor engine harness connector.
If ohmmeter shows continuity, Replace the computer.
Also check primary and secondary sides of coil.
Thursday, March 20th, 2014 AT 4:12 PM