ECB 59KD Fault (APS 3200)

TASK 49-61-00-810-804-A
ECB 59KD Fault (APS 3200)

1. Possible Causes

ELECTRONIC CONTROL BOX [59KD]
SPEED SENSOR 1 (8060KM1)
SPEED SENSOR 2 (8060KM2)

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 49-00-00-710-008	Operational Test of the APU
AMM 49-61-34-000-002	Removal of the Electronic Control Box (ECB) (APS 3200)
AMM 49-61-34-400-002	Installation of the Electronic Control Box (ECB) (APS 3200)
AMM 49-71-13-000-002	Removal of the Speed Sensor (APS 3200)
AMM 49-71-13-400-002	Installation of the Speed Sensor (APS 3200)

3. Fault Confirmation
Subtask 49-61-00-710-056-A ** ON A/C NOT FOR ALL

A. Do the operational test of the APU AMM 49-00-00-710-008.

4. Fault Isolation
Subtask 49-61-00-810-053-B ** ON A/C NOT FOR ALL

A. Maintenance Action
(1) If the APU Class 3 Faults Page gives the maintenance message:

ECB (59KD):
One out of Fault Code Number: 014, 015, 054, 055, 056, 075, 076, 078-081, 083, 165, 166

replace the ELECTRONIC CONTROL BOX [59KD] AMM 49-61-34-000-002 and AMM 49-61-34-400-002.

(2) If the APU Class 3 Faults Page gives the maintenance message:

ECB (59KD):
Fault Code Number: 027 or 028

replace the SPEED SENSOR 1 (8060KM1) AMM 49-71-13-000-002 and AMM 49-71-13-400-002.

(a) If the fault continues:

replace the ELECTRONIC CONTROL BOX [59KD] AMM 49-61-34-000-002 and AMM 49-61-34-400-002.

(3) If the APU Class 3 Faults Page gives the maintenance message:

ECB (59KD):
Fault Code Number: 030 or 031

replace the SPEED SENSOR 2 (8060KM2) AMM 49-71-13-000-002 and AMM 49-71-13-400-002.

(a) If the fault continues:

replace the ELECTRONIC CONTROL BOX [59KD] AMM 49-61-34-000-002 and AMM 49-61-34-400-002.

Subtask 49-61-00-710-057-B ** ON A/C NOT FOR ALL

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:34:40 UTC