TASK 32-51-00-810-810
 Loss of the Signal from the ELAC 2 to the BSCU (identified by the BSCU-B)
 1. Possible Causes
_______________
 - BSCU (10GG)

 - wiring from the BSCU (10GG), pins AA/14B, 14C, 7B, 7J to the first terminal block

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 32-42-34-000-001 Removal of the Braking/Steering Control Unit (BSCU) (10GG) AMM 32-42-34-400-001 Installation of the Braking/Steering Control Unit
 (BSCU) (10GG)
 AMM 32-46-00-740-001 BITE Test of the BSCU
 ASM 32-51/01

 3. Fault Confirmation
__________________
 A. Test
 (1) Do the BITE test of the BSCU (Ref. AMM TASK 32-46-00-740-001).
 4. Fault Isolation
_______________ R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-220, 301-399,
 A. If the test gives the maintenance message BSCU : NO DATA FROM ELAC2:
 - replace the BSCU (10GG) (Ref. AMM TASK 32-42-34-000-001) and (Ref. AMM TASK 32-42-34-400-001).
 (1) If the fault continues:
 - do a check and repair the wiring from the BSCU (10GG), pins AA/14B, 14C, 7B, 7J to the first terminal block (Ref. ASM 32-51/01).
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞32-51-00∞∞∞∞∞∞∞∞∞∞Page 221
 May 01/05 CESR **ON A/C 106-149, 221-299, 401-499,

 A. If the test gives the maintenance message ELAC2(2CE2)/BSCU(10GG):
 - replace the BSCU (10GG) (Ref. AMM TASK 32-42-34-000-001) and (Ref. AMM TASK 32-42-34-400-001).
 (1) If the fault continues:
 - do a check and repair the wiring from the BSCU (10GG), pins AA/14B, 14C, 7B, 7J to the first terminal block (Ref. ASM 32-51/01).
 **ON A/C ALL
 B. Do the test given in Para. 3.A.

 TASK 32-51-00-810-811
 Failure of the Nosewheel Steering Feedback Sensor (Control Channel)
 1. Possible Causes
_______________
 - SERVO CTL-N/W STEERING (6GC)

 - SENSOR-N/W STRG FDBK,CTL CHAN (3GC)

 - BSCU (10GG) R - SENSOR-N/W STRG FDBK,MONITORING CHAN (4GC)
 - wiring from the BSCU (10GG) to the feedback sensor (3GC)

 - wiring from the BSCU (10GG) to the N/S steering servo control (6GC)

 - wiring from the BSCU (10GG) to the feedback sensor (4GC)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE  DESIGNATION
 -------------------------------------------------------------------------------
AMM 12-14-32-614-004  Check Shock Absorber Charge Pressure
 AMM 32-42-34-000-001  Removal of the Braking/Steering Control Unit (BSCU) (10GG)
 AMM 32-42-34-400-001  Installation of the Braking/Steering Control Unit
 (BSCU) (10GG)

 AMM 32-46-00-740-001  BITE Test of the BSCU
 AMM 32-46-00-740-002  BITE Test of the BSCU - Ground Scanning
 AMM 32-51-19-000-001  Removal of the Nose Wheel Steering Feedback Sensor
 (3GC, 4GC) P/N C24763000

 AMM 32-51-19-400-001  Installation of the Nose Wheel Steering Feedback Sensor (3GC, 4GC) P/N C24763000
 AMM 32-51-51-000-001  Removal of the Nose Wheel Steering Servo-Control (6GC)
 AMM 32-51-51-400-001  Installation of the Nose Wheel Steering Servo-Control (6GC)
 ASM 32-51/01
 3. Fault Confirmation
__________________
 A. Test
 (1) Do the BSCU GND SCAN (Ref. AMM TASK 32-46-00-740-002).

 (2) Do the BITE test of the BSCU (Ref. AMM TASK 32-46-00-740-001).

 4. Fault Isolation
_______________

R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-220, 301-399,
 A. If either the GND SCAN or the BITE test gives the maintenance message STEERING FEEDBACK CONTROL SENSOR 3GC:
 - do a check for water (or moisture) in the electrical connector of the N/W steering servo control (6GC).
 (1) If there is water:

 - examine the electrical connector for corrosion
 (a) If there is corrosion:

 - replace the SERVO CTL-N/W STEERING (6GC) (Ref. AMM TASK 32-51-51-000-001) and (Ref. AMM TASK 32-51-51-400-001).
　
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