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 a If there is continuity:
_
 - replace the CONTROL UNIT-COCKPIT DOOR LOCKING SYSTEM (24MQ) (Ref. AMM TASK 52-51-13-000-001) and (Ref. AMM TASK 52-51-13-400-001).
 b If there is no continuity:
_
 - do a check and repair the wiring between the BUZZER (23MQ) and the CONTROL UNIT-COCKPIT DOOR LOCKING SYSTEM (24MQ) connector A/C (Ref. ASM 52-51/01).
 (b) If there is 28 VDC:
 - do a check for continuity on the BUZZER (23MQ).
 1 If there is no continuity:
_
 - replace the BUZZER (23MQ) (Ref. AMM TASK 52-51-13-000-001) and (Ref. AMM TASK 52-51-13-400-001).
 2 If there is continuity:
_
 - replace the CONTROL UNIT-COCKPIT DOOR LOCKING SYSTEM (24MQ) (Ref. AMM TASK 52-51-13-000-001) and (Ref. AMM TASK 52-51-13-400-001).
 (2) If the green LED at the KEYPAD (25MQ) does not flash:
 - do a check of voltage between the pins G and K of the CONTROL UNIT-COCKPIT DOOR LOCKING SYSTEM (24MQ).
 (a) If there is no voltage:

 - replace the CONTROL UNIT-COCKPIT DOOR LOCKING SYSTEM (24MQ) (Ref. AMM TASK 52-51-14-000-001) and (Ref. AMM TASK 52-51-14-400-001).

 (b) If there is voltage:

 - do a check of voltage between the KEYPAD (25MQ) connectors A/15 and A/8 (Ref. ASM 52-51/01).
 1 If there is no voltage:
_
 - do a check and repair the wiring between: the KEYPAD (25MQ) connector A/15 and CONTROL UNIT-COCKPIT DOOR LOCKING SYSTEM (24MQ) connector B/G (Ref. ASM 52-51/01). the KEYPAD (25MQ) connector A/8 and CONTROL UNIT-COCKPIT DOOR LOCKING SYSTEM (24MQ) connector B/K (Ref. ASM 52-51/01).
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-105, 151-199, ∞∞52-51-00∞∞∞∞∞∞∞∞∞∞Page 204
 201-214, May 01/05 CES 2 If there is voltage:

_
 - do a check for continuity between the CONTROL UNIT-COCKPIT DOOR LOCKING SYSTEM (24MQ) connector B/E and the KEYPAD (25MQ) connector A/9 (Ref. ASM 52-51/01).

 - do a check for continuity between the CONTROL UNIT-COCKPIT DOOR LOCKING SYSTEM (24MQ) connector B/F and the KEYPAD (25MQ) connector A/10 (Ref. ASM 52-51/01).

 a If there is no continuity:
_
 - do a check and repair the wiring between the CONTROL UNIT-COCKPIT DOOR LOCKING SYSTEM (24MQ) connector B/E and the KEYPAD (25MQ) A/9 (Ref. ASM 52-51/01).

 - do a check and repair the wiring between the CONTROL UNIT-COCKPIT DOOR LOCKING SYSTEM (24MQ) connector B/F and the KEYPAD (25MQ) A/10 (Ref. ASM 52-51/01).

 b If there is continuity:
_
 - replace the KEYPAD (25MQ) (Ref. AMM TASK 52-51-15-000-001) and (Ref. AMM TASK 52-51-15-400-001).
 (c) If the fault continues:
 - do a resistance check between the KEYPAD (25MQ) connector A/1 and the connector housing (Ref. ASM 52-51/01).

 - do a resistance check between the KEYPAD (25MQ) connector A/2 and the connector housing (Ref. ASM 52-51/01).

 - do a resistance check between the KEYPAD (25MQ) connector A/3 and the connector housing (Ref. ASM 52-51/01).

 - do a resistance check between the KEYPAD (25MQ) connector A/4 and the connector housing (Ref. ASM 52-51/01).

 NOTE : The plug 24MQ/B stays connected to the control unit 24MQ
____
 during this test

 1 If there is low resistance:
_
 - replace the EMI filter (P/N 73124-1) that is fitted inside the connector 24MQ/B which is connected at the CONTROL UNIT-COCKPIT DOOR LOCKING SYSTEM (24MQ).
 2 If the fault continues:
_
 - do a check for continuity between the CONTROL UNIT-COCKPIT DOOR LOCKING SYSTEM (24MQ) connector B/A and the KEYPAD (25MQ) connector A/1 (Ref. ASM 52-51/01).

 - do a check for continuity between the CONTROL UNIT-COCKPIT DOOR LOCKING SYSTEM (24MQ) connector B/B and the KEYPAD (25MQ) connector A/2 (Ref. ASM 52-51/01).

 - do a check for continuity between the CONTROL UNIT-COCKPIT DOOR LOCKING SYSTEM (24MQ) connector B/C and the KEYPAD (25MQ) connector A/3 (Ref. ASM 52-51/01).

 - do a check for continuity between the CONTROL UNIT-COCKPIT DOOR LOCKING SYSTEM (24MQ) connector B/D and the KEYPAD (25MQ) connector A/4 (Ref. ASM 52-51/01).

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-105, 151-199, ∞∞52-51-00∞∞∞∞∞∞∞∞∞∞Page 205
 201-214, May 01/05 CES a If there is no continuity:

_
 - do a check and repair the wiring between the CONTROL UNIT-COCKPIT DOOR LOCKING SYSTEM (24MQ) connector B/A and the KEYPAD (25MQ) connector A/1 (Ref. ASM 52-51/01).
　
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