- connector (28HKA) and the SEL-TEMPERATURE, AIR COND/FWD CABIN (28HK). (Ref. AMM TASK 21-63-11-000-001) and, (Ref. AMM TASK 21-63-11-400-001).

 - connector (29HKA) and the SEL-TEMPERATURE, AIR COND/AFT CABIN (29HK). (Ref. AMM TASK 21-63-11-000-001) and, (Ref. AMM TASK 21-63-11-400-001).

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-149, 151-199, ∞∞21-63-00∞∞∞∞∞∞∞∞∞∞Page 268
 201-299, 301-399, Aug 01/05 CES

 (b) If the voltage is between 4.8 VDC and 5.2 VDC replace SENSOR-MIXER UNIT TEMPERATURE CABIN (25HK) and connect the electrical connector (25HKA). (Ref. AMM TASK 21-63-16-000-001) and, (Ref. AMM TASK 21-63-16-400-001).
 (3) If the fault continues:
 - on the circuit breaker panel 122VU, open the CBIs 1HK (V17), 2HK (V18), 3HK (V19) and 4HK (V20).
 - remove the CONT-ZONE TEMPERATURE (8HK).
 (Ref. AMM TASK 21-63-34-000-001).

 - disconnect the electrical connector (11HKA) from the TRIM VALVE CKPT (11HK).

 - at the electrical connector (11HKA) do a check for a short circuit:

 - between pins U and J, U and K, U and L, J and K, J and L, K and L, C and D and,

 - between GND and pins U, J, K, L, and C.

 (a) If there is no short circuit connect the electrical connector (11HKA).

 (b) If there is a short circuit repair the related wiring between:

 - the TRIM VALVE CKPT (11HK) to the ZC (8HK).

 - connect the electrical connector (11HKA).

 (4) If the fault continues:

 - disconnect the electrical connector (12HKA) from the VALVE-TRIM AIR,FWD CABIN (12HK).

 - at the electrical connector (12HKA) do a check for a short circuit:

 - between pins U and J, U and K, U and L, J and K, J and L, K and L, C and D and,

 - between GND and pins U, J, K, L, and C.

 (a) If there is no short circuit connect the electrical connector (12HKA).

 (b) If there is a short circuit repair the related wiring between:

 - the VALVE-TRIM AIR,FWD CABIN (12HK) to the ZC (8HK).

 - connect the electrical connector (12HKA).

 (5) If the fault continues:

 - disconnect the electrical connector (13HKA) from the VALVE-TRIM AIR,AFT CABIN (13HK).

 - at the electrical connector (13HKA) do a check for a short circuit:

 - between pins U and J, U and K, U and L, J and K, J and L, K and L, C and D and,

 - between GND and pins U, J, K, L, and C.

 (a) If there is no short circuit connect the electrical connector (13HKA).
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-149, 151-199, ∞∞21-63-00∞∞∞∞∞∞∞∞∞∞Page 269
 201-299, 301-399, Aug 01/05 CES (b) If there is a short circuit repair the related wiring between:

 - the VALVE-TRIM AIR,AFT CABIN (13HK) to the ZC (8HK).

 - connect the electrical connector (12HKA).

 (6) If the fault continues:

 - disconnect the electrical connector (15HKA) from the SENSOR-DUCT TEMPERATURE,COCKPIT (15HK).

 - at the electrical connector (15HKA) do a check for a short circuit between pins C and D, E and F and between GND and pins C, D, E and

 F.
 (a) If there is no short circuit connect the electrical connector (15HKA).

 (b) If there is a short circuit repair the related wiring between:

 - the SENSOR-DUCT TEMPERATURE,COCKPIT (15HK) to the ZC (8HK).

 - connect the electrical connector (15HKA).

 (7) If the fault continues:

 - disconnect the electrical connector (16HKA) from the SENSOR-DUCT TEMPERATURE,FWD CABIN (16HK).

 - at the electrical connector (16HKA) do a check for a short circuit between pins C and D, E and F and between GND and pins C, D, E and

 F.
 (a) If there is no short circuit connect the electrical connector (16HKA).

 (b) If there is a short circuit repair the related wiring between:

 - the SENSOR-DUCT TEMPERATURE,FWD CABIN (16HK) to the ZC (8HK).

 - connect the electrical connector (16HKA).

 (8) If the fault continues:

 - disconnect the electrical connector (17HKA) from the SENSOR-DUCT TEMPERATURE,AFT CABIN (17HK).

 - at the electrical connector (17HKA) do a check for a short circuit between pins C and D, E and F and between GND and pins C, D, E and