Engine Control - Revised Crank Sensor Testing
90chevy16Number: 88-439-6E
Section: 6E
Date: May 1990
Corp. Bulletin No.: 016520
Subject: DRIVEABILITY, EMISSIONS AND ELECTRICAL DIAGNOSIS
Model and Year: 1987-88 J CAR WITH 2.8L (VIN CODE W) ENGINE
Figure 1:
Figure 2:
Wiring colors for circuits 573 and 574 on pages 6E3-A1-14, 6E3-A1-16, 6E3-A1-18, 6E3- A1-48, 6E3-C4-6, 6E3-C4-8, and 8A-22-1 of the 1987 J Car Service Information Manual are incorrect. Refer to Figure 1. The correct wiring colors are:
Pin A, circuit 573 YEL
Pin B, circuit 574 PPL
The crank sensor output voltage specified on page 6E3-A1-19 of the 1987 and page 6E3- A-19 of the 1988 J Car Service Information Manuals is incorrect. The correct output voltage range is .8 volts (800 mV) to 1.4 volts (1400 mV). Refer to Figure 2.
Please note these changes in your copies of the Service Information Manuals.