System Tests: Introduction
NOTE:
For connector terminal identification, see Fig 1
. For terminal wire color identification, see WIRING DIAGRAMS
. For further speedometer testing, see Vehicle Speed Sensor (VSS) related codes in appropriate TESTS W/CODES
article in ENGINE PERFORMANCE section:
- TESTS W/CODES - 5.7L
- TESTS W/CODES - 6.5L - Diesel
- TESTS W/CODES - 7.4L
CAUTION:
When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES
article in GENERAL INFORMATION section before disconnecting battery.