P2440
The secondary air valve (cylinder bank 1) is jammed open. (P2440)
Possible cause:
Y32 (Air pump switchover valve)
Affected functions:
Engine diagnosis
Test 1: Check component Y32 (Air pump switchover valve).
1. Check component Y32 (Air pump switchover valve).
Test 1.1: Test actuation of component Y32 (Air pump switchover valve).
Test 1.2: Test current consumption of component Y32 (Air pump switchover valve).
1.1. Test actuation of component Y32 (Air pump switchover valve).
Test sequence
Operate engine at idling speed.
Actuate component Y32 (Air pump switchover valve).(Actuate with key F2.)
Warning!Communication with ECU required.
10.52SS
Page 2182010 Mercedes Benz E 63 AMG Sedan (212.077) V86.3L (156.985)
Copyright ? 2013, ALLDATA
10.52SS
1.2. Test current consumption of component Y32 (Air pump switchover valve).
Figure legend
A ConnectionTest cable 35pin socket box
001 Sockets of component N3/10 (MESFI [ME] control unit)
05 35pin socket box
050 126pin socket box
108 Test cable 266 589 01 63 00
N3/10 (MESFI [ME] control unit)
II 163ConnectionTest cable
III 64126ConnectionTest cable
Warning!
Connection A of test cable 108 may NOT be connected to connection B of the 126pin socket box (050).
Test prerequisite
The actuation was not okay.
Test sequence
Switch off ignition.
Connect socket box (126pin) to component N3/10 (MESFI [ME] control unit).
Measure direct current with multimeter between sockets (F.4) 100 and [M.53] 53 of the 126pole socket box tester.
Switch on ignition.
Specified value
Amperage[0.3...0.6] A
Question
Is the measurement value OK?
YES
The measurement value is OK.End of test
Page 2192010 Mercedes Benz E 63 AMG Sedan (212.077) V86.3L (156.985)
Copyright ? 2013, ALLDATA
10.52SS
Page 220
NO
The measurement value is not OK.Possible cause and remedy
K40/4f44 (Fuse 44)
K40/4kM (Circuit 30z relay)
Line between component N3/10 (MESFI [ME] control unit) and component Y32 (Air pump switchover valve)
Line between component K40/4 (Front passenger fuse and relay module) and component Y32 (Air pump switchover valve)
Y32 (Air pump switchover valve)
End of test
The secondary air valve (cylinder bank 1) is jammed open. (P2440)
Possible cause:
Y32 (Air pump switchover valve)
Affected functions:
Engine diagnosis
Test 1: Check component Y32 (Air pump switchover valve).
1. Check component Y32 (Air pump switchover valve).
Test 1.1: Test actuation of component Y32 (Air pump switchover valve).
Test 1.2: Test current consumption of component Y32 (Air pump switchover valve).
1.1. Test actuation of component Y32 (Air pump switchover valve).
Test sequence
Operate engine at idling speed.
Actuate component Y32 (Air pump switchover valve).(Actuate with key F2.)
Warning!Communication with ECU required.
10.52SS
Page 2182010 Mercedes Benz E 63 AMG Sedan (212.077) V86.3L (156.985)
Copyright ? 2013, ALLDATA
10.52SS
1.2. Test current consumption of component Y32 (Air pump switchover valve).
Figure legend
A ConnectionTest cable 35pin socket box
001 Sockets of component N3/10 (MESFI [ME] control unit)
05 35pin socket box
050 126pin socket box
108 Test cable 266 589 01 63 00
N3/10 (MESFI [ME] control unit)
II 163ConnectionTest cable
III 64126ConnectionTest cable
Warning!
Connection A of test cable 108 may NOT be connected to connection B of the 126pin socket box (050).
Test prerequisite
The actuation was not okay.
Test sequence
Switch off ignition.
Connect socket box (126pin) to component N3/10 (MESFI [ME] control unit).
Measure direct current with multimeter between sockets (F.4) 100 and [M.53] 53 of the 126pole socket box tester.
Switch on ignition.
Specified value
Amperage[0.3...0.6] A
Question
Is the measurement value OK?
YES
The measurement value is OK.End of test
Page 2192010 Mercedes Benz E 63 AMG Sedan (212.077) V86.3L (156.985)
Copyright ? 2013, ALLDATA
10.52SS
Page 220
NO
The measurement value is not OK.Possible cause and remedy
K40/4f44 (Fuse 44)
K40/4kM (Circuit 30z relay)
Line between component N3/10 (MESFI [ME] control unit) and component Y32 (Air pump switchover valve)
Line between component K40/4 (Front passenger fuse and relay module) and component Y32 (Air pump switchover valve)
Y32 (Air pump switchover valve)
End of test
