- do a check of the wiring from the ANTI ICE/ENG 1 pushbutton switch (2DN1) to the EIU-1 (1KS1) . pin AA/B2 to pin AA/5C (Ref. ASM 73-25/08).

 (1) If the fault continues:
 - do a check of the wiring from the ENG/MODE/CRANK/AUTO IGN/IGN selector switch (6KS) to the EIU-1 (1KS1) . pin 3 to pin AA/1A . pin 4 to pin AA/1B (Ref. ASM 73-25/08).
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E F 『 E C F M E E E E 56 E E E (2) If the fault continues:

 - replace the EIU-1 (1KS1) (Ref. AMM TASK 73-25-34-000-040) and (Ref. AMM TASK 73-25-34-400-040).
 B. After the subsequent flight, make sure that the fault does not continue.
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 TASK 74-00-00-810-821

 Uncommanded Continuous Ignition on Engine 2 After Engine Start
 1. Possible Causes
_______________
 - P/BSW-ANTI ICE/ENG 2 (2DN2)

 - wiring from the ANTI ICE/ENG 2 pushbutton switch (2DN2) TO the EIU-2 (1KS2)

 - wiring from the ENG/MODE/CRANK/AUTO IGN/IGN selector switch (6KS) to the EIU-2 (1KS2)

 - EIU-2 (1KS2)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 73-25-34-000-040 Removal of the Engine Interface Unit (EIU)
 (1KS1,1KS2)
 AMM 73-25-34-400-040 Installation of the Engine Interface Unit (EIU)
 (1KS1,1KS2)
 ASM 73-25/08

 3. Fault Confirmation
__________________
 A. Test
 (1) Not applicable, the fault is evident.
 4. Fault Isolation
_______________
 A. If the fault symptom is identified by the crew observation ENG 2 -Uncommanded continuous IGNITION after engine start:
 - check if the ground is applied at the pin AA/B2 of the ANTI ICE/ENG2 pushbutton switch (2DN2) when the switch is OFF. If not replace the P/BSW-ANTI ICE/ENG 2 (2DN2)

 - do a check of the wiring from the ANTI ICE/ENG 2 pushbutton switch (2DN2) TO the EIU-2 (1KS2) . pin AA/B2 to pin AA/5C (Ref. ASM 73-25/08).

 (1) If the fault continues:
 - do a check of the wiring from the ENG/MODE/CRANK/AUTO IGN/IGN selector switch (6KS) to the EIU-2 (1KS2) . pin 3 to pin AA/1A . pin 4 to pin AA/1B (Ref. ASM 73-25/08).
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E F 『 E C F M E E E E 56 E E E (2) If the fault continues:

 - replace the EIU-2 (1KS2) (Ref. AMM TASK 73-25-34-000-040) and (Ref. AMM TASK 73-25-34-400-040).
 B. After the subsequent flight, make sure that the fault does not continue.
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