Retrieving Codes (ETS System): Notes

1. Codes for ETS system can only be retrieved with Saab Intelligent Tester (ISAT-86 10 651). Diagnostic Black connector is located under passenger's front seat. ISAT can also clear fault codes.
2. Ensure ignition switch is in DRIVE position. ISAT system number for ETS system is No. 3. Always retrieve and note all stored fault codes before disconnecting battery or ETS ECU. See ETS SYSTEM FAULT CODES table.
3. If communication cannot be established between ISAT and ETS ECU, check wiring between ETS ECU terminals No. 9 and 34, and Black diagnostic connector. Ensure power feed and ground circuits to diagnostic connector are good and connector terminals are not damaged. In addition, be aware that some faults will disable ISAT communications abilities of ETS ECU.
4. After fault codes stored in ETS ECU have been transferred to ISAT, diagnosis function is completed. It is now necessary to enter any command codes which apply to the problem present. It may be helpful to enter all command codes to determine whether certain signals and components are correct. Refer to instructions supplied with ISAT.
5. Ensure ignition is off before disconnecting ETS ECU connector. Before tracing faults on a system, always start by checking ground and voltage circuits for ETS ECU. Check all connectors by unplugging and plugging them back together. Start engine or drive vehicle again to check whether fault or faults return.
6. When first detected, a fault will be assigned a permanent fault code. If fault later disappears, fault will be intermittent. All signals around 12-volt level are proportional to battery voltage. These levels should be used as a rough guide. Zero voltage signal levels indicate ground.
7. ETS ECU connector can be backprobed with test probes. However, TC/ABS ECU connector on wiring harness is a molded plug; test probes cannot be connected to back of connector. Use Breakout Box (8611006) with Test Lead Set (8611030) if diagnosis calls for probing TC/ABS ECU.