Part III

ENGINE CRANKS BUT WILL NOT RUN 2.3L (VIN D1 A & 3) "N" CARLINE










Circuit Description:
The Electronic Ignition (EI) system uses a waste spark method of distribution. In this type of system, the electronic Ignition Control Module (1CM) triggers the #1-4 coil pair resulting in both #1 and #4 spark plugs firing at the same time. #1 cylinder is on the compression stroke at the same time #4 is on the exhaust stroke, resulting in a lower energy requirement to fire #4 spark plug. This leaves the remainder of the high voltage to be used to fire #1 spark plug. On this application, the Crankshaft Position (CKP) sensor is mounted to, and protrudes through the block to within approximately 0.050" of the crankshaft reluctor. Since the reluctor is a machined portion of the crankshaft and the CKP sensor is mounted in a fixed position on the block, timing adjustments are not possible or necessary.

Chart Test Description: Number(s) below refer to circled number(s) on the diagnostic chart.

10. Battery voltage should be available at terminal "L" of the 1CM 11 pin harness connector, and terminal "K" should be a good ground.
11. The CKP sensor should output a voltage as the crankshaft turns. If no voltage is produced, the indication is a poor sensor connection or faulty sensor.
12. The CKP sensor core is a magnet, therefore it should be magnetized and the resistance should be within a range of 500 to 900 ohms.
13. The test light to 12 volts simulates a reference signal to the PCM which will result in an injector test light blink for every other touch of the test light, if CKT 430, the PCM and the injector driver circuit are all functioning properly.