- do a check and repair the wiring between:
 - the MODULE-RAT GND CHECK (2027GE) connector A/A and the SDAC connector AE/01H and repair as necessary (Ref. ASM 29-22/01) and (Ref. ASM 31-54/02) .
 (b) If the red warning light is on:
 - do a check for a short circuit between the CTL UNIT-RAT GND (2815GE) connector A/A and connector A/B (Ref. ASM 29-22/01).
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-061, 101-105, 201-203, ∞∞29-22-00∞∞∞∞∞∞∞∞∞∞Page 204
 May 01/05 CES 1 If there is a short circuit:

_

 - replace the CTL UNIT-RAT GND (2815GE) (Ref. AMM TASK 29-22-12-000-001) and (Ref. AMM TASK 29-22-12-400-001).
 2 If there is no short circuit:
_

 - disconnect the electrical connector (2455GE-A) from the MODULE-JACK CONTROL, RAT (2455GE) (Ref. ASM 29-22/01).
 a If the fault continues:
_

 - do a check of the wiring for a GND connection between:
 - the MODULE-JACK CONTROL, RAT (2455GE)connector A/D and the SDAC connector AA/04G and repair as necessary (Ref. ASM 29-22/01) and (Ref. ASM 31-54/02) .
 b If the fault does not continue:
_

 - replace the MODULE-JACK CONTROL, RAT (2455GE) (Ref. AMM TASK 29-22-54-000-001) and (Ref. AMM TASK 29-22-54-400-001).
 (3) If the RAT triangle is shown in white:
 - pressurize the Blue hydraulic system with the Blue electric pump (Ref. AMM TASK 29-10-00-863-003) and: -operate hydraulic consumers for not more than 2 minutes, -look at the RAT triangle on the lower ECAM DU.
 (a) If the RAT triangle is shown in amber:
 - do a check for 28 VDC at the: -MODULE-JACK CONTROL, RAT (2455GE) connector A/B and ground (Ref. ASM 29-22/01).
 1 If there is 28 VDC:
_

 - do a check and repair the wiring between the MODULE-JACK CONTROL, RAT (2455GE) connector A/B and the JACK-EJECTION, RAT (2454GE) connector C/B (Ref. ASM 29-22/01).
 2 If there is no 28 VDC:
_

 - do a check for a short circuit between the pins D and E of the connector 2455GE-A (Ref. ASM 29-22/01).
 a If there is a short circuit:
_

 - replace the MODULE-JACK CONTROL, RAT (2455GE) (Ref. AMM TASK 29-22-54-000-001) and (Ref. AMM TASK 29-22-54-400-001).
 b If there is no short circuit:
_

 - do a check for a GND connection between:
 - the MODULE-JACK CONTROL, RAT (2455GE) connector D and the CTL UNIT-RAT GND (2815GE) connector B and repair as necessary (Ref. ASM 29-22/01) .
 c If the fault continues:
_

 - do a check of the wiring for a GND connection between:
 「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, 051-061, 101-105, 201-203, ∞∞29-22-00∞∞∞∞∞∞∞∞∞∞Page 205
 May 01/05 CES - the MODULE-JACK CONTROL, RAT (2455GE) connector A/D and the SDAC connector AA/04G and repair as necessary (Ref. ASM 29-22/01) and (Ref. ASM 31-54/02) .

R **ON A/C 062-099, 106-149, 151-199, 204-299, 301-399, 401-499,
 A. If the upper ECAM DU shows the message HYD RAT FAULT and the RAT is extended:
 - do a check for 28 VDC between: the JACK-EJECTION, RAT (1GE) connectors A/A and A/B, B/A and B/B (Ref. ASM 29-22/01).
 NOTE : The solenoid valves are made unserviceable, if 28 VDC is supplied
____
 for more than 2 minutes.

 (1) If there is no 28 VDC:
 WARNING : MAKE SURE THAT THE RAT TRAVEL RANGE IS CLEAR BEFORE YOU
_______
 EXTEND/RETRACT THE RAT.

 - retract the RAT (Ref. AMM TASK 29-22-00-869-006) and extend it again with the EMER ELEC POWER/MAN ON/AUTO P/BSW (24XE) on panel 21VU.

 - retract the RAT (Ref. AMM TASK 29-22-00-869-006) and extend it again with the RAT MAN ON P/BSW (2805GE) on panel 40VU.

 (a) If the operation of the RAT is satisfactory, no further actions are necessary.
 NOTE : The uncommanded extension was due to a mechanical fault of
____ the ejection jack or a spurious supply to one of the two deploy solenoids.
 (2) If there is 28 VDC at one or both solenoids:

 - do a check for 28 VDC between:

 - the P/BSW 2805GE pin 4 and ground

 - the P/BSW 24XE pin 7 and ground (Ref. ASM 29-22/01).

 (a) If there is 28 VDC:

 - replace the related P/BSW.

 (b) If there is no 28 VDC:

 - do a check and repair the wiring between:
 - the P/BSW 2805GE pin 4 and the JACK-EJECTION, RAT (1GE) connector B/B