Cockpit Temperature Sensor Fault
TASK 21-63-00-810-806-A
Cockpit Temperature Sensor Fault
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 21-63-00-710-061-A ** ON A/C NOT FOR ALL
Subtask 21-63-00-810-062-A ** ON A/C NOT FOR ALL
Subtask 21-63-00-860-055-A
[Rev.8 from Aug 2018]
2026.04.04 04:25:00 UTC
Cockpit Temperature Sensor Fault
1. Possible Causes
- SENSOR-TEMPERATURE, COCKPIT [21HK]
- wiring
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 21-63-00-710-004 | Operational Test of the Cockpit and Cabin Temperature Control with CFDS/MCDU |
| ASM 216303 | |
| AMM 21-63-17-000-001 | Removal of the Temperature Sensors |
| AMM 21-63-17-400-001 | Installation of the Temperature Sensors |
Subtask 21-63-00-710-061-A ** ON A/C NOT FOR ALL
A. Do the operational test of the cockpit and cabin temperature-control system with CFDS/MCDU AMM 21-63-00-710-004.
Subtask 21-63-00-710-061-B ** ON A/C NOT FOR ALL NOTE: If a fault is detected, the ZC gives a fault code for shop maintenance in addition to the related CFDS message(s). For detailed information see the applicable Page Block 301.
A. Do the operational test of the cockpit and cabin temperature-control system with CFDS/MCDU AMM 21-63-00-710-004.
4. Fault IsolationSubtask 21-63-00-810-062-A ** ON A/C NOT FOR ALL
A. If the test gives the maintenance message TEMP SENSOR CKPT:
Subtask 21-63-00-810-062-B ** ON A/C NOT FOR ALL - replace the SENSOR-TEMPERATURE, COCKPIT [21HK] (referred to as SENSOR (21HK)) AMM 21-63-17-000-001 and AMM 21-63-17-400-001.
- do a check and repair the wiring if necessary between:
SENSOR (21HK) connector A/A and ZC (8HK) connector AA/7A,
SENSOR (21HK) connector A/B and ZC (8HK) connector AA/7B,
SENSOR (21HK) connector A/E and ZC (8HK) connector AA/7J,
SENSOR (21HK) connector A/D and ZC (8HK) connector AA/7K ASM 216303.
A. If the test gives the maintenance message TEMP SENSOR CKPT(21HK):
Subtask 21-63-00-710-062-A - replace the SENSOR-TEMPERATURE, COCKPIT or TEMP SENSOR CKPT [21HK] AMM 21-63-17-000-001 and AMM 21-63-17-400-001.
- do a check and repair the wiring ASM 216303 from:
- the SENSOR (21HK) to the ACSC1 (47HH).
B. Do the test as given in the Para. 3.A.
5. Close-upSubtask 21-63-00-860-055-A
A. Put the aircraft back to its initial configuration.