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No signal (FMI 4) = gap conductors
Too high (FMI 1) = short circuit or other electrical failure
Note. Depending on the version of the EDC control unit there are various response systems:
Reaction system of EDC 7 C3:
All FMI considered here General Electric failures. No signal failure usually refers to a suitable circuit
through SPN. All the other glitches appear in strict accordance with the cylinder, i.e. displays some
circuit current through SPN (for example, 651), which may be affected by other current circuit of the
cylinder block (for example, 653 or 655)
When breaking circuit conductors shall be deactivated only a faulty injector, i. e. this injection
cylinder stops
Consequence: overclocking test (TRUP), which identifies the affected circuit.
Short circuit current circuit in one injector disables all injectors affected by the block, i.e. does the
block cylinders injection stops 1.
Consequence: testing the dispersal (TRUP) terminates the error row engines (for example, 6-cylinder
in-line engine only runs with three cylinders and when only the TRUP with two cylinders).
Reaction system of EDC 7 C32:
No signal failure usually refers to a suitable circuit through SPN. All the other glitches appear only in
strict accordance with the block, i.e. displays all SPN (651, 653 and 655) this block, although, perhaps,
affected only one circuit
When breaking circuit conductors shall be deactivated only a faulty injector, i. e. this injection
cylinder stops
Consequence: overclocking test (TRUP), which identifies the affected circuit.
Short circuit current circuit in one injector disables all injectors affected block, IE. stops all injection
cylinder block 1.
Consequence: testing the dispersal (TRUP) terminates the error row engines (for example, 6-cylinder
in-line engine only runs with three cylinders and when only the TRUP with two cylinders).
652
BANK 2 INJECTOR 1 (4-cylinder engine: cylinder 3; 6-cylinder engine: 5 cylinder; 8-cylinder engine:
cylinder head 2 subject: cylinder 7; 10-cylinder engine: 5 cylinder master, slave cylinder; 10:12cylinder engine Chief: 5 cylinder, slave cylinder: 8)
Check control unit circuit — wiring harness-injector for breaks, short-circuits or other electrical failures
No signal (FMI 4) = gap conductors
Too high (FMI1) = short circuit or other electrical failure
Note. Depending on the version of the EDC control unit there are various response systems:
Reaction system of EDC 7 C3:
All FMI considered here General Electric failures. No signal failure usually refers to a suitable circuit
through SPN. All the other glitches appear in strict accordance with the cylinder, i.e. displays some
circuit current through SPN (for example, 652), which may be affected by other current circuit of the
cylinder block (for example, or 654 656)
When breaking circuit conductors shall be deactivated only a faulty injector, i. e. this injection
cylinder stops
Consequence: overclocking test (TRUP), which identifies the affected circuit.
Short circuit current circuit in one injector disables all injectors affected block, IE. stops all injection
cylinders block 2.
Consequence: testing the dispersal (TRUP) terminates the error row engines (for example, 6-cylinder
in-line engine only runs with three cylinders and when only the TRUP with two cylinders).
Reaction system of EDC 7 C32:
No signal failure usually refers to a suitable circuit through SPN. All the other glitches appear only in
strict accordance with the block, i.e. displays all SPN (652, 654 and 656) this block, although, perhaps,
affected only one circuit
When breaking circuit conductors shall be deactivated only a faulty injector, i. e. this injection
cylinder stops
Consequence: overclocking test (TRUP), which identifies the affected circuit.
Short circuit current circuit in one injector disables all injectors affected block, IE. stops all injection
cylinders block 2.
Consequence: testing the dispersal (TRUP) terminates the error row engines (for example, 6-cylinder
in-line engine only runs with three cylinders and when only the TRUP with two cylinders).
653
BANK 1 INJECTOR 2 (4-cylinder engine: 4 cylinder; 6-cylinder engine: cylinder 3; 8-cylinder engine:
cylinder head, 3 cylinder subject: 6; 10-cylinder engine: cylinder head 2 subject: cylinder 7; 12cylinder engine main: 3 cylinder, slave cylinder: 10)
Check control unit circuit — wiring harness-injector for breaks, short-circuits or other electrical failures