TASK 32-42-00-810-825
Loss of the 115VAC Power Supply of the BSCU-SYS 2
1. Possible Causes
_______________
- BSCU (10GG)
- wiring from the BSCU (10GG) pin AB/15C to the ground terminal
- wiring from the BSCU (10GG) pin AB/14C to the circuit breaker (3GG)
- C/B-HYD/BRK & STRG/SYS 2/CTL (3GG)
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 32-42/01
3. Fault Confirmation
__________________
A. Test
(1) Do the BITE test with the BSCU channel that is the source of the fault message (Ref. AMM TASK 32-46-00-740-001).
(a) If the circuit breaker (3GG) is open:
- refer to Para. 4.A.(2)
4. Fault Isolation
_______________
A. If the BITE test is not available:
- do a check of the circuit breaker (3GG) status:
(1) If the circuit breaker is closed:
- do a check for 115VAC at pin AB/14C of the BSCU (10GG) (Ref. ASM 32-42/01).
(a) If there is 115VAC:
- do a check for a ground signal at pin AB/15C of the BSCU (10GG) (Ref. ASM 32-42/01).
1 If there is no ground signal:
_
- repair the wiring from the BSCU (10GG) pin AB/15C to the ground terminal (Ref. ASM 32-42/01).
「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 ∞∞32-42-00∞∞∞∞∞∞∞∞∞∞Page 242
Feb 01/04R CES
2_ If there is a ground signal:
- replace the BSCU (10GG) (Ref. AMM TASK 32-42-34-000-001) and
(Ref. AMM TASK 32-42-34-400-001).
(b) If there is no 115VAC:
- do a check of the wiring from the BSCU (10GG) pin AB/14C to the circuit breaker (3GG) (Ref. ASM 32-42/01).
1 If there is no continuity:
_
- repair the related wiring. 2 If there is continuity:
_
- replace the C/B-HYD/BRK & STRG/SYS 2/CTL (3GG) (Ref. ASM 32-42/01).
(2) If the circuit breaker is opened:
- close the circuit breaker.
(a) If it trips:
- 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 for a short to ground at the wiring from the BSCU (10GG) pin AB/14C to the circuit breaker (3GG) (Ref. ASM 32-42/01).
a If there is a short to ground:
_
- repair the related wiring. b If there is no short to ground:
_ - replace the circuit breaker (3GG) (Ref. ASM 32-42/01).
B. Do the test given in Para. 3.A.
「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 ∞∞32-42-00∞∞∞∞∞∞∞∞∞∞Page 243
Feb 01/04R
CES
TASK 32-42-00-810-827
Electrical failure of the Brake Pedal Transmitter-Unit
1. Possible Causes
_______________
- BSCU (10GG)
- XMTR UNIT-BRK PEDAL (9GG)
- wiring from the BSCU (10GG) to the transmitter unit (9GG)
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 32-42-47-000-001 Removal of the Transmitter Unit - Brake Pedal (9GG) AMM 32-42-47-400-001 Installation of the Transmitter Unit - Brake Pedal
(9GG)
AMM 32-46-00-740-001 BITE Test of the BSCU
ASM 32-42/01
3. Fault Confirmation
__________________
A. Test
(1) Do the BITE test of the BSCU (Ref. AMM TASK 32-46-00-740-001).
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