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(WARNING)
RED MESSAGE (CAUTION)
AMBER MESSAGE (ADVISORY)
CYAN MESSAGE (STATUS)
WHITE MESSAGE Require immediate crew attention. These messages are accompanied by flashing master warning, triple chime attenson with or without voice message or dedicated tone. Require immediate crew awareness and future crew action may be required in the form of alternate system selection or performance limitation. These message are accompanied by flashing master caution and a single chime. Indicate safe or normal system operation which require crew awareness, over and above the dark cockpit philosophy. Indicate minor failures or reduction in systems capability, which require no crew action.

For AOG assistance contact:

CRC Montreal (YUL)
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07/10/19

Junction Box 1, Board 1

System Drawing Test Points:
Discrete = Black, ARINC = Blue		 Miscellaneous Equipment
Anti-Ice System Low Temp 30-12-05 JB1-D Pin 5B, 6D, 6F Test Point 19 None
Anti-Ice Wing Cross-Bleed 30-11-05 JB1-D Pin 6G, 6J, 7B Test Point 25
JB1-D Pin 7A, 6H, 6K Test Point 22		 None
Engine ID and Secondary System Selection Left 73-31-01 JB1-D Pin 12D, 12F, 12H, 12K, 13B, 13D Test Point 97 ARINC Hi
JB1-D Pin 12G, 12E, 12J, 13A, 13C, 13E Test Point 100 ARINC Lo		 LA-FADEC-1 Bus
Engine ID and Secondary Systems Selection Left 74-31-01 JB1-E Pin 26, 27, 21, 36 Test Point 13 None
EFIS Checklist Control 31-61-05 JB1-E Pin 30, 31, 39 Test Point 10 None
Spare JB1-E Pin 54 (Relay X1) Test Point 21
JB1-E Pin 55 (Relay X2) Test Point 5
JB1-D Pin 7D (Relay A1) Test Point 11
JB1-D Pin 7C (Relay A2) Test Point 24
JB1-D Pin 7E (Relay A3) Test Point 28
JB1-D Pin 7G (Relay B1) Test Point 14
JB1-D Pin 7F (Relay B2) Test Point 8
JB1-D Pin 7H (Relay B3) Test Point 18		 Relay K172
Field Loadable Software 25-72-23
25-72-27
34-55-01		 JB1-E Pin 56 (Relay X1) Test Point 49
JB1-E Pin 57 (Relay X2) Test Point 31
JB1-D Pin 7K (Relay A1) Test Point 55
JB1-D Pin 7J (Relay A2) Test Point 52
JB1-D Pin 8A (Relay A3) Test Point 45
JB1-D Pin 8C (Relay B1) Test Point 34
JB1-D Pin 8B (Relay B2) Test Point 40
JB1-D Pin 8D (Relay B3) Test Point 37
JB1-D Pin 8F (Relay C1) Test Point 33
JB1-D Pin 8E (Relay C2) Test Point 43
JB1-D Pin 8G (Relay C3) Test Point 23
JB1-D Pin 8J (Relay D1) Test Point 27
JB1-D Pin 8H (Relay D2) Test Point 30
JB1-D Pin 8K (Relay D3) Test Point 17		 Relay K159
IASC Bus Interface 21-31-03 JB1-D Pin 11B, 11D, 11F Test Point 91 ARINC Hi
JB1-D Pin 11C, 11E, 11GTest Point 94 ARINC Lo		 IASC2-A Bus
Audio Integration System Interconnect 23-51-12
1002359008		 JB1-D Pin 11H, 11K, 12B, 13F Test Point 92 ARINC Hi
JB1-D Pin 11J, 12A, 12C, 13G Test Point 95 ARINC Lo		 LB-RIU-14 Bus
Integrated Avionics Processor (L-GP-5) Bus 31-45-06 JB1-D Pin 15E, 15B, 15J Test Point 81 ARINC Hi
JB1-D Pin 15H, 15C, 15F Test Point 98 ARINC Lo

JB1-A Pin 7H, 7F, 7D, 7B, 7K, 6K, 6H Test Point 81 ARINC Hi
JB1-A Pin 6J, 7A, 7C, 7E, 7G, 7J, 8A Test Point 98 ARINC Lo		 L-GP-5 Bus

Junction Box 1, Board 2

System Drawing Test Points:
Discrete = Black, ARINC = Blue		 Miscellaneous Equipment
Traffic Collision Avoidance System Power & Control 34-43-01 JB1-A Pin 11A, 11C, 11E, 11G, 11B, 11D, 11F, 11H Test Point 4
JB1-A Pin 11J, 12A, 11K, 12B Test Point 99
JB1-A Pin 12J, 12K, 13A Test Point 101
JB1-A Pin 14A, 14B, 14C Test Point 95

JB1-D Pin 4D, 4H, 4F Test Point 85 ARINC Hi
JB1-D Pin 4E, 4J, 4G Test Point 88 ARINC Lo		 TTR-TA/RA-2 Bus
Air Conditioning System Hot Air Shut-off Valves 25-13-01 JB1-A Pin 12C, 12E, 12D Test Point 102 None
Cockpit Miscellaneous Reading / Stowage Lights 23-13-09 JB1-A Pin 14G, 14H, 14J, 15H, 13J Test Point 92 None
Emergency Locator Transmitter 25-61-01 JB1-A Pin 14K, 15A Test Point 100 7.5K Resistor (R8)
Rudder Pedal Adjust Electrical System 27-21-25 JB1-A Pin 15B, 15D, 15C Test Point 97
JB1-A Pin 15E, 15F, 15G, Test Point 94		 None
Cockpit Integral Lighting Power & Control 33-11-11 JB1-E Pin 23, 24, 25 (Relay X1) Test Point 37
JB1-E Pin 21 (Relay X2) Test Point 40
JB1-A Pin 13E, 13G (Relay A1) Test Point 46
JB1-A Pin 13F (Relay A2) Test Point 43
JB1-A Pin 13H (Relay A3) Test Point 98(through R21, R23) Test Point 96 (through R21 or R25, or R29 only) Test Point 29 (Direct from relay)
JB1-A Pin 14F (Relay B1) Test Point TBD
JB1-A Pin 14E (Relay B2) Test Point TBD
JB1-A Pin 13H (Relay B3) Test Point 98		 K179, Several resistors, see drawing
Air Data Computer 34-13-05 JB1-D Pin 2B, 3D, 3C Test Point 80 ARINC Hi
JB1-D Pin 2C, 3E, 3B Test Point 83 ARINC Lo		 L-ADC-1 Bus
Hydraulic Power Control, Left SOV 29-12-33 JB1-E Pin 10 (Relay X1) Test Point 10
JB1-E Pin 9, 11 (Relay X2) Test Point 13
JB1-E Pin 15, 16 (Relay A1) Test Point 1
JB1-E Pin 10 (Relay A2) Test Point 10
JB1-E Pin 14 (Relay A3) Test Point 2		 Relay K59
Air Conditioning System L Bleed & High Pressure Valves 36-15-01 JB1-E Pin 17 (Relay X1) Test Point 28
JB1-E Pin 19 (Relay X2) Test Point 31
JB1-E Pin 17 (Relay B2) Test Point 28
JB1-E Pin 18, 20 (Relay B3) Test Point 34		 Relay K11
Lighting Interface 33-51-21 JB1-A Pin 14D, 15J, 15K, 1A Test Point 91 None
Oxygen System Electrical 35-21-01 JB1-D Pin 1H, 1K, 2H Test Point 81 None
ADC Data Load Switching 25-72-27 JB1-D Pin 2K, 3F, 3K Test Point 87 ARINC Hi
JB1-D Pin 3A, 3G, 4A Test Point 90 ARINC Lo		 L-SIM-1 Bus
Hydraulic Motor Driven Generator 24-33-03 JB1-E Pin 7 (Relay X1) Test Point 49
JB1-E Pin 23 (Relay X2) Test Point 64
JB1-A Pin 12G (Relay A1) Test Point 55
JB1-E Pin 7 (Relay A2) Test Point 49
JB1-A Pin 13C (Relay B1) Test Point 58
JB1-A Pin 13B (Relay B2) Test Point 61		 Relay K169

Junction Box 1, Board 3

System Drawing Test Points:
Discrete = Black, ARINC = Blue		 Miscellaneous Equipment
Air Conditioning System Engine Off 80-11-05 JB1-A Pin 1A, 1E, 1C Test Point 94
JB1-A Pin 1B, 1F, 1D Test Point 101		 None
Aileron System Position Sensors and Roll Disconnect 27-11-13 JB1-A Pin 2C, 2E, 2F, 2D Test Point 100 None
ATC 1 Transponder 34-54-01 JB1-A Pin 3F, 3H, 3K, 4B, 4D, 4F, 4H, 4K, 5B, 5D, 5F, 5H, 5K, 3G, 3J, 4A, 4C, 4E, 4G, 4J, 5A, 5C, 5E, 5G, 5J Test Point 1 None
Electronic Flight Information System Displays Reversion 31-61-16 JB1-A Pin 2G, 2H, 2K, 2J Test Point 5
JB1-A Pin 3A, 3B, 3C Test Point 2		 None
Integrated Avionics Processing System (L-GP-5) 31-45-06 JB1-A Pin 6H, 6K, 7B, 7D, 7F, 7H, 7K Test Point 61 ARINC Hi
JB1-A Pin 6J, 7A, 7C, 7E, 7G, 7J, 8A Test Point 64 ARINC Lo		 L-GP-5 Bus
Radio Altimeter 34-44-01 JB1-A Pin 8B, 8F, 8D Test Point 67 ARINC Hi
JB1-A Pin 8C, 8G, 8E Test Point 70 ARINC Lo		 LS-RALT-1 Bus
AHRS Interface 34-21-09 L-AHC-1
JB1-A Pin 8H, 10E, 10B Test Point 73 ARINC Hi
JB1-A Pin 8J, 10F, 10C Test Point 76 ARINC Lo
R-AHC-3
JB1-A Pin 8K, 9H, 9D Test Point 62 ARINC Hi
JB1-A Pin 9A, 9J, 9E Test Point 65 ARINC Lo
L-AHC-2
JB1-A Pin 9B, 9K, 9F Test Point 68 ARINC Hi
JB1-A Pin 9C, 10A, 9G Test Point 71 ARINC Lo		 L-AHC-1, R-AHC-3, L-AHC-2 Bus
Oxygen System Electrical 35-21-01 JB1-B Pin 31, 33, 32, Test Point 4
JB1-B Pin 44, 47, 51 Test Point 13		 None
EICAS Power & Indication 31-41-13 JB1-B Pin 34, 35, 36 Test Point 8 None
Brake Control System & PSEU Interface 31-45-04 JB1-B Pin 37, 39, 40 Test Point 9
JB1-B Pin 30, 41 Test Point 7		 None
General Radio Tuning Emergency Frequency Selection 31-61-15 JB1-B Pin 42, 45, 48, 50 Test Point 10
JB1-B Pin 43, 46, 49, 52 Test Point 12
JB1-A Pin 1H, 1K, 2A, 1J Test Point 91		 None
Air Data Computer Data Load Switching 25-72-27 JB1-A Pin 5B, 6D, 5F Test Point 74 ARINC Hi
JB1-A Pin 5C, 6E, 6G Test Point 77 ARINC Lo		 None

Junction Box 1, Board 4

System Drawing Test Points:
Discrete = Black, ARINC = Blue		 Miscellaneous Equipment
Lightning Detection Optional System Interface 24-31-05 JB1-F Pin 2A, 2F Test Point 77
JB1-F Pin 2D Test Point 34
JB1-F Pin 2E Test Point 37
JB1-F Pin 2B, 2C, 7D Test Point 40
JB1-F Pin 7E, 7F, Test Point 80		 Four Diodes, CR9, 10, 12, & 37
Lightning Detection Optional System Power & Control 34-46-01 JB1-F Pin 9D, 9F, 9H, 9k, 10B Test Point 49 ARINC Hi
JB1-F Pin 9E, 9G, 9J, 10A, 10C Test Point 52 ARINC Lo		 LDS-1 Bus
General Radio Tuning Display Right System 23-51-26 RB-RIU-9
JB1-F Pin 9B, 8H, 8K, 6B Test Point 55 ARINC Hi
JB1-F Pin 9A, 9C, 8J, 6C Test Point 58 ARINC Lo
L-RIU-11
JB1-F Pin 5H, 5D, 5F Test Point 50 ARINC Hi
JB1-F Pin 5J, 5E, 5G Test Point 53 ARINC Lo
L-CDU-1
JB1-F Pin 3J, 4A, 4C, 5A Test Point 56 ARINC Hi
JB1-F Pin 3K, 4B, 4D, 5B Test Point 59 ARINC Lo		 RB-RIU-9, L-RIU-11, L-CDU-1 Bus
Air Conditioning 31-61-16 JB1-B Pin 16, 21, 19 Test Point 100
JB1-B Pin 17, 24, 22, 18 Test Point 102
JB1-B Pin 25, 26, 20 Test Point 89		 None
Yaw Damper Actuator 22-22-01 JB1-F Pin 5C, 5K, 6A Test Point 35 None

Junction Box 1, Board 5

System Drawing Test Points:
Discrete = Black, ARINC = Blue		 Miscellaneous Equipment
Air Conditioning System, L Pressure Sensor 21-23-05 JB1-C Pin 5C, 5D, 5E, 5F, 5G, 5H, 5J, 5K Test Point 26 None
AHRS Computer #1 34-21-01 JB1-B Pin 1, 2, 3 Test Point 4 None
General Radio Tunning 31-61-14 JB1-C Pin 1A, 2A, 1J, 1G, 1E, 2C, 1C Test Point 11
JB1-C Pin 1B, 2D, 2B, 1K, 1H, 1F, 1D Test Point 8		 None
Cockpit Integral Lighting System 33-11-19 JB1-C Pin 3C, 3J, 3G, 3E Test Point 45
JB1-C Pin 3D, 3K, 3H, 3F Test Point 43		 None
Fuel Distribution System Fuel Pump LHS 28-21-09 JB1-C Pin 4B, 5A, JB1-B Pin 13, 14 Test Point 5
JB1-C Pin 4E, 5B, JB1-C Pin 4E Test Point 2
K99
JB1-C Pin 4D (Relay X1) Test Point 38
JB1-C Pin 4C (Relay X2) Test Point 41
JB1-C Pin 4A (Relay B1) Test Point 47
JB1-C Pin 4F (Relay B2) Test Point 44
K100
JB1-C Pin 4J (Relay X1) Test Point 35
JB1-C Pin 4G, 4H (Relay X2) Test Point 29
JB1-C Pin 4J (Relay A2) Test Point 35
JB1-C Pin 4K (Relay A3) Test Point 32		 Relay K99, K100
General Radio Tunning Nav Left System 23-51-23 LA-RIU-7
JB1-C Pin 6B, 6D, 6F Test Point 23 ARINC Hi
JB1-C Pin 6C, 6E, 6G Test Point 40 ARINC Lo
LA-RIU-8
JB1-C Pin 6H, 6K, 7B Test Point 20 ARINC Hi
JB1-C Pin 6J, 7A, 7C Test Point 37 ARINC Lo		 LA-RIU-7, LA-RIU-8 Bus
Electronic Flight Instrumentation System Bussing 31-61-24 JB1-C Pin 8K, 9B, 9D, 9F, 8F Test Point 13 ARINC Hi
JB1-C Pin 9A, 9C, 9E, 9G, 8G, Test Point 16 ARINC Lo		 L-MFD-3 Bus
Horizontal Stab Trim Control System Power 27-41-03
27-21-27		 JB1-B Pin 4, 5, 6, 10 Test Point 3
JB1-B Pin 7, 8, 9 Test Point 1		 None
EICAS BRT/DIM Master Warning Caution System 31-52-06
27-52-33
31-52-09
31-52-11
31-52-13
31-52-15
31-52-17
31-52-19
31-52-23		 JB1-C Pin 7D, 7E, 8B, 8C, 8D, 8E, 8H, 8J, 9H, 9J, 9K, 10A, 10E, 10F, 10G, 10H, 10J, 10K Test Point 10 None
PMAT Connections between cards 45-45-07
45-45-05
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