Code 17, Rpm Signal Problem 3.8L: Notes
WARNING: This page does not describe the selected car, but rather 24 other vehicles, including the 1993 Pontiac Trans Sport, 1993 Oldsmobile Silhouette, 1993 Oldsmobile Bravada, 1993 GMC Vandura, and 1993 GMC Value Van. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Test numbers refer to numbers on diagnostic chart.
- Verifies spark reference circuit is not shorted to ground or open in ignition jumper harness.
- If a window on harmonic balancer is lined up with 18X Hall Effect switch, ignition module will ground spark reference signal. Starter may have to be bumped several times to obtain a voltage reading.
- Voltage reading should be lower than reading obtained with engine not running, indicating a pulsed reference signal.