DESCRIPTION & OPERATION
This vehicle has two module communications networks. A BUS which consists of a pair of twisted wires is used to transfer information between modules. The BUS consists of a (+) circuit No. 914 (Tan/Orange wire) and a (-) circuit No. 915 (Pink/Light Blue wire). The BUS is routed only to the Powertrain Control Module (PCM). Terminal No. 7 (Light Blue/White wire) of the DLC goes directly to 4-Wheel Anti-lock Brake (4WABS) module and air bag diagnostic monitor (also referred to as Electronic Crash Sensor (ECS) module). This wire is referred to as the ISO 9141 communication link. For module locations, see COMPONENT LOCATIONS TABLE. In the event that a system failure exists, a Diagnostic Trouble Code (DTC) will be stored in the module. A New Generation Star (NGS) scan tester and Data Link Connector (DLC) may be used for retrieving and clearing DTCs from the modules. DTC may be used for system diagnosis.
| Component | Location |
|---|---|
| Air Bag Diagnostic Monitor (1) | Behind Right Kick Panel |
| Data Link Connector (DLC) | Below Driver's Side Of Instrument Panel, To Right Of Steering Column |
| Powertrain Control Module (PCM) | Left Rear Of Engine Compartment Near Brake Master Cylinder |
| 4-Wheel Anti-Lock Brake (ABS) Module | On Left Front Frame Rail |
| (1) Also referred to as Electronic Crash Sensor (ECS) module. | |
| (1) | Also referred to as Electronic Crash Sensor (ECS) module. |
COMPONENT LOCATIONS
RETRIEVING PARAMETER IDENTIFICATION (PID) INFORMATION
Note. This procedure may be used to verify operation of input cir-cuitry for selected module being tested.
- Connect New Generation Star (NGS) scan tester on Data Link Connector (DLC) and perform proper hook-up procedure. See «EQUIPMENT HOOK-UP»(ref-29217-S12762081092001101500000) . NOTE: If instructed to retrieve PID from a specified test procedure, ensure ignition is in proper position as listed in test procedure or the test will fail.
- Turn ignition switch to RUN position unless otherwise instructed by specified test procedure. Rotate dial on scan tester to DIAGNOSTIC DATA LINK menu and press trigger.
- Rotate dial on scan tester to highlight the desired module you wish to access and press trigger. Rotate dial on scan tester to PID/DATA MONITOR AND RECORD and press trigger.
- Rotate dial on scan tester to highlight the PID acronyms you wish to view and press trigger. Repeat this procedure until all desired PIDs are selected. When all PID acronyms have been selected, press button No. 7 to view all selected PIDs.
MODULE VERSION IDENTIFICATION
Note. This procedure may be used to verify correct version of module being tested.
- Connect New Generation Star (NGS) scan tester on Data Link Connector (DLC) and perform proper hook-up procedure. See «EQUIPMENT HOOK-UP»(ref-29217-S12762081092001101500000) . NOTE: If instructed to retrieve PID from a specified test procedure, ensure ignition is in proper position as listed in test procedure or the test will fail.
- Turn ignition switch to RUN position unless otherwise instructed by specified test procedure. Rotate dial on scan tester to DIAGNOSTIC DATA LINK menu and press trigger.
- Rotate dial on scan tester to highlight the desired module you wish to access and press trigger. Rotate dial on scan tester to highlight menu MODULE IDENTIFICATION and press trigger. Module version information will be displayed.