DESCRIPTION & OPERATION
The module communications network provides the capability for module-to-module communication by sharing inputs and outputs instead of each component having an input and output wired directly to each module. 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 and a (-) circuit No. 915. The BUS is routed only to the Powertrain Control Module (PCM). 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.
Note. Terminal No. 7 (Orange wire) of the DLC goes directly to Remote Anti-Theft Personality (RAP) module and Anti-Lock Brake (ABS) module. This wire is referred to as the ISO 9141 communication link circuit No. 70 and provides a means for the scan tester to communicate with the Remote Anti-Theft Personality (RAP) module and Anti-Lock Brake (ABS) module by using the DLC.
| Component | Location |
|---|---|
| Anti-Lock Brake (ABS) Module | Under Front Passenger's Seat |
| Data Link Connector (DLC) | Below Driver's Side Of Instrument Panel, To Left Of Steering Column |
| Remote Anti-Theft Personality (RAP) Module | (1) |
| Powertrain Control Module (PCM) | Under Center Console |
| (1) On sedans, RAP module is behind right rear quarter panel. On station wagons, RAP module is behind left rear quarter panel. | |
| (1) | On sedans, RAP module is behind right rear quarter panel. On station wagons, RAP module is behind left rear quarter panel. |
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-29099-S16657735602001101500000) . 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-29099-S16657735602001101500000) . 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.