As of M.Y. 1997
Air Conditioning (A/C)
Models 129 as of MY 1997
Diagnostic trouble Code Memory [15]
Note:
- The A/C pushbutton control module (N22) has DTC memory and data output. The diagnostic trouble codes and data are displayed via the temperature display window. The stored DTC's will remain in memory even with the vehicle battery disconnected.
- The DTC memory differentiates between current and intermittent faults.
- Numerous DTC's can also be read with the Hand-Held Tester (HHT).
Preparations for DTC Readout
1. Review 11, 12, 14, 15, 20, 21, 22, 31, 31, 41
2. Ignition: ON
3. Temperature selector "LO"
4. Within 20 seconds press REST and Defroster simultaneously for more than 5 seconds.
5. The LED in Recirculated Air flashes and the display shows "d1A".
6. Press AUTO repeatedly until all DTC's are displayed. Record each DTC as it is displayed. The current faults (refer to table) are displayed first, next, the intermittant failures (e.g. 45 °5) are displayed in the display window next to the FAN symbol. END will appear after the last DTC is displayed.
Press AUTO again, dEL (delete, erase) will be displayed.
7. To erase: Press Up and Down buttons simultaneously for more than 5 seconds and the display shows: "-- -".
To cancel erase: By pressing AUTO button, the current faults will appear again.
8. Turn ignition OFF, to end test.
Note: Due to instrument cluster (IC) series interface, DTC's may be stored in IC memory, therefore readout and erase DTC's from IC memory.
Special Tools:
