4. Fault Isolation_______________
A. If steering swerve occurs:
- do a check for water (or moisture) in the electrical connectors of: . the N/W steering servo control (6GC) . the N/W steering feedback sensor (control channel) (3GC) . the N/W steering feedback sensor (monitoring channel) (4GC)
「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 A222
Aug 01/05R
CES
(1) If there is water:
- examine the electrical connectors for corrosion
(a) If there is corrosion, replace the damaged component(s):
- SERVO CTL-N/W STEERING (6GC) (Ref. AMM TASK 32-51-51-000-001) and (Ref. AMM TASK 32-51-51-400-001).
- SENSOR-N/W STRG FDBK,CTL CHAN (3GC) (Ref. AMM TASK 32-51-19-000-001) and (Ref. AMM TASK 32-51-19-400-001)
- SENSOR-N/W STRG FDBK,MONITORING CHAN (4GC) (Ref. AMM TASK 32-51-19-000-001) and (Ref. AMM TASK 32-51-19-400-001)
(b) If there is no corrosion:
- for the connectors of the steering feedback sensors (3GC) and (4GC): . dry the electrical connectors and connect them.
- for the connector of the steering servo control (6GC): . dry the electrical connector . make sure that the heat-shrink sleeve of the electrical connector is in the correct condition . connect the electrical connector to the steering servo control (6GC) and fold back the end of the heat-shrink sleeve on the connector.
(2) If there is no water:
- do a check and repair the wiring from the BSCU (10GG) to the feedback sensor (3GC): pins AB/15E, 15F, 8E, 8F, 9E, 9F to pins A/A, B, C, D, E, F (Ref. ASM 32-51/01).
(a) If the fault continues:
- do a check and repair the wiring from the BSCU (10GG) to the N/W steering servo control (6GC): pins AB/12E, 12F, 13E, 13F, 14E, 14F to pins A/G,H, E, F, C, D (Ref. ASM 32-51/01).
(b) If the fault continues:
- do a check and repair the wiring from the BSCU (10GG) to the feedback sensor (4GC): pins AB/14E, 14F, 10E, 10F, 11F, 11E to pins A/A,B, C, D, E, F (Ref. ASM 32-51/01).
(c) If the fault continues:
- 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).
(d) If the fault continues :
- replace the BSCU (10GG) , (Ref. AMM TASK 32-42-34-000-001) and (Ref. AMM TASK 32-42-34-400-001)R **ON A/C 401-499,
R TASK 32-51-00-810-837 R Failure of the Steering Selector Valve 7GC (opened position) R 1. Possible Causes
_______________ R - SERVO CTL-N/W STEERING (7GC) R 2. Job Set-up Information
______________________
R A. Referenced Information
R -------------------------------------------------------------------------------R REFERENCE DESIGNATION R -------------------------------------------------------------------------------
R AMM 32-46-00-740-002 R AMM 32-51-00-720-004 R R AMM 32-51-23-000-001 R AMM 32-51-23-400-001
R 3. Fault Confirmation
__________________
R A. Tests BITE Test of the BSCU - Ground Scanning Functional Test of the Nose Wheel Steering with the Pedals. Removal of the Selector Valve Manifold-Assembly Installation of the Selector Valve Manifold-Assembly
R (1) Do the functional test of the nose wheels steering with the pedals.
R (Ref. AMM TASK 32-51-00-720-004)
R (2) Do the GROUND SCANNING of the BSCU (Ref. AMM TASK 32-46-00-740-002)
R 4. Fault Isolation
_______________
R A. If the test gives the maintenance message STEERING SELECTOR VALVE (7GC): R - replace the SERVO CTL-N/W STEERING (7GC) (Ref. AMM TASK 32-51-23-000-R 001) (Ref. AMM TASK 32-51-23-400-001)
R B. Do the test given in Para.A.3.
R TASK 32-51-00-810-838
R Failure of the Steering Selector Valve 7GC (closed position)
R 1. Possible Causes_______________
R - SERVO CTL-N/W STEERING (7GC)
R - SERVO CTL-N/W STEERING (6GC)
R 2. Job Set-up Information______________________
R A. Referenced Information
R -------------------------------------------------------------------------------
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