P2440

P2440
The secondary air valve (cylinder bank 1) is jammed open. (P2440)
Possible cause:
­ Y32 (Air pump switchover valve)
Affected functions:
­
Engine diagnosis
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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