Cumminz

Cummins ISB CM550 (1990-94) Fault Code: 434 PID...

Circuit DescriptionThe ECM receives constant voltage from the batteries through the unswitched battery wiresthat are connected directly to the positive (+) battery post. There are three in-line 7.5-ampfuses and one...

Cummins ISB CM550 (1990-94) Fault Code: 434 PID...

Circuit DescriptionThe ECM receives constant voltage from the batteries through the unswitched battery wiresthat are connected directly to the positive (+) battery post. There are three in-line 7.5-ampfuses and one...

Cummins ISB CM550 (1990-94) Fault Code: 433 PID...

Circuit DescriptionThe intake manifold pressure sensor monitors intake manifold pressure and passes information to theelectronic control module (ECM) through the engine harness. If intake manifold pressure becomes toohigh, it will...

Cummins ISB CM550 (1990-94) Fault Code: 433 PID...

Circuit DescriptionThe intake manifold pressure sensor monitors intake manifold pressure and passes information to theelectronic control module (ECM) through the engine harness. If intake manifold pressure becomes toohigh, it will...

Cummins ISB CM550 (1990-94) Fault Code: 432 PID...

Circuit DescriptionThe accelerator pedal assembly relays the accelerator percentage requested by the operatorto the electronic control module (ECM). Percent accelerator is used to determine fueling. Theaccelerator position sensor and the...

Cummins ISB CM550 (1990-94) Fault Code: 432 PID...

Circuit DescriptionThe accelerator pedal assembly relays the accelerator percentage requested by the operatorto the electronic control module (ECM). Percent accelerator is used to determine fueling. Theaccelerator position sensor and the...

Cummins ISB CM550 (1990-94) Fault Code: 431 PID...

Circuit DescriptionThe idle validation switch (IVS) is used by the electronic control module (ECM) to indicatewhen the accelerator pedal is released (on-idle) or depressed (off-idle). The switch is adjustedby the...

Cummins ISB CM550 (1990-94) Fault Code: 431 PID...

Circuit DescriptionThe idle validation switch (IVS) is used by the electronic control module (ECM) to indicatewhen the accelerator pedal is released (on-idle) or depressed (off-idle). The switch is adjustedby the...

Cummins ISB CM550 (1990-94) Fault Code: 431 PID...

Circuit DescriptionThe idle validation switch (IVS) is used by the electronic control module (ECM) to indicatewhen the accelerator pedal is released (on-idle) or depressed (off-idle). The switch is adjustedby the...

Cummins ISB CM550 (1990-94) Fault Code: 431 PID...

Circuit DescriptionThe idle validation switch (IVS) is used by the electronic control module (ECM) to indicatewhen the accelerator pedal is released (on-idle) or depressed (off-idle). The switch is adjustedby the...

Cummins ISB CM550 (1990-94) Fault Code: 429 PID...

Circuit DescriptionThe WIF sensor is attached to the fuel filter. The WIF sensor sends a signal to the electroniccontrol module (ECM) when a set volume of water has accumulated in...

Cummins ISB CM550 (1990-94) Fault Code: 429 PID...

Circuit DescriptionThe WIF sensor is attached to the fuel filter. The WIF sensor sends a signal to the electroniccontrol module (ECM) when a set volume of water has accumulated in...

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