Engine Controls - Component Removal & Installation: Introduction

CAUTION: When battery or Powertrain Control Module (PCM) is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until adaptation systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES - ISUZU article in GENERAL INFORMATION before disconnecting battery.

NOTE: Before replacing any component that scan tool suggests are faulty. Ensure that all wiring connections and electrical connectors are okay. Ensure that power and ground circuits are functioning properly. For circuit identification, see ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.

NOTE: Not all procedures apply to all models. Most components are a simple unbolt and bolt-on procedure. For component locations, see COMPONENT LOCATIONS in SYSTEM & COMPONENT TESTING article.

Removal, overhaul and installation procedures (when given by manufacturer) are covered in this article. If component removal and installation is primarily an unbolt and bolt-on procedure, a torque specification may be all that is furnished.