
MEP 660 - Trouble shooting Manual
Doc No.: IM – 51
Rev.2.0
Print: October 2008
140
PARAMETER
DESCRIPTION
FAULT CODE
1134
FAULT MESSAGE AGPR circuit open. Run Auto/manual test
Batteries may not charge.
RESTRICTIONS
--
ALARM BELL
5 seconds
RESET LEVEL
Low, Manual
After manual reset if the fault still present, the fault will be generated
again.
FAULT
RECOVERY
Automatic when AGPR circuit is detected as closed.
PROBABLE
CAUSES
1. Defective AGPR relay
2. Defective wiring.
3. Slackness of Connector of cable at MEP-660 (Cable ID: AZ)
4. Defective digital output card MLSD 16 in slot 14
5. Slackness of connector of cable at MEP-660 (cable ID: AV)
6. Defective digital input card MDIP 16 in slot 11
FAULT
ISOLATION
After cranking wait for two minutes and check the status of AGPR
relay.
1. If AGPR relay is not picking up, check the supply at AGPR relay coil
terminals.
A. If the voltage is more than 65V, and still the relay is not picking
up then the AGPR relay is defective. Replace the relay.
2. If the voltage is zero, check the voltage at coil terminal (Wire-13)
with respect to locomotive 4 wire.
A. If the voltage is zero, check the continuity of 13-wire loop
coming to AGPR relay. If necessary replace the open circuited /
wrong connections.
3. If voltage is more than 65V, check the voltage between locomotive
50 wire and AGPR coil terminal (wire No. AGPRCL).
A. If the voltage is zero
a) Check slackness of connector of cable (Cable ID: AZ) at MEP-
660. If the cable is slack tighten.
b) Check continuity of wire AGPRCL from AGPR coil terminal to
MEP-660 (Cable ID: AZ Pin-D). If necessary replace the cable.
c) If continuity is good, then digital output card MLSD 16 in slot
No. 14 is defective.
4. If the AGPR relay is picking up, check the status of Green LED 3 on
the digital input card MDIP 16 in slot No. 11.
5. If LED 3 is not glowing, check voltage at AGPR relay interlock
terminal (Wire No.51)
A. If voltage is zero, check the continuity of wire 51 coming to
EXPR relay interlock. If necessary replace open circuited / wrong
connections.
6. If voltage is more than 65V, check the voltage between locomotive
50 wire and AGPRFB wire at AGPR interlock terminal.
A. If the voltage is zero, the interlock contact is bad. Replace the
relay.
7. If the voltage is more than 65V,
A. check the slackness of the connector of cable (Cable ID: AV) at
MEP-660. If cable connector is slack, tighten the connector.