Unwanted IDG1 Disconnection Message

TASK 24-20-00-810-967-A
Unwanted IDG1 Disconnection Message

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
ASM 242101

3. Fault Confirmation
Subtask 24-20-00-869-125-A

A. Test
Not applicable, you cannot confirm this fault on the ground.

4. Fault Isolation
Subtask 24-20-00-810-242-A ** ON A/C NOT FOR ALL

A. If the fault symptom is identified by the CFDS message IDG1 DISCONNECTED:

Do a check of the wiring ASM 242101 between:
. Pin A/X2 of the IDG 1 DISC CTL relay (3XT) and the ground
. Pin A/X1 of the IDG 1 DISC CTL relay (3XT) and the pin A/B2 of the relay (7XT)
. Pin A/B3 of the relay (7XT) and the pin A/B1 of the ELEC/IDG 1 pushbutton switch (5XT).

(1) If the wiring is not correct:

(2) If the wiring is correct:

(a) If the fault continues:

1 If the fault continues:

Subtask 24-20-00-810-242-B ** ON A/C NOT FOR ALL

A. If the fault symptom is identified by the CFDS message IDG1 (E1-4000XU) MANUAL DISCONNECT:

Do a check of the wiring ASM 242101 between:
. Pin A/X2 of the IDG 1 DISC CTL relay (3XT) and the ground
. Pin A/X1 of the IDG 1 DISC CTL relay (3XT) and the pin A/B2 of the relay (7XT)
. Pin A/B3 of the relay (7XT) and the pin A/B1 of the ELEC/IDG 1 pushbutton switch (5XT).

(1) If the wiring is not correct:

(2) If the wiring is correct:

(a) If the fault continues:

1 If the fault continues:

[Rev.8 from Aug 2018] 2026.04.04 04:26:28 UTC