Abnormality Display

DTC DTC name Detected item Preconditions when DTC is set

1632 5 V power supply 2 voltage abnormality (atmospheric pressure sensor power supply) ・ DTC: 1630 is not detected. ・ Key switch input power supply voltage is higher than 16 V and lower than 32 V.

1633 5 V power supply 3 voltage abnormality (oil pressure sensor power supply) ・ DTC: 1630 is not detected. ・ Key switch input power supply voltage is higher than 16 V and lower than 32 V.

1634 5 V power supply 4 voltage abnormality (boost pressure sensor power supply) 1635 5 V power supply 5 voltage abnormality (common rail pressure sensor, EGR position sensor power supply) 2104 CAN Bus abnormality ・ DTC: 1630 is not detected. ・ Key switch input power supply voltage is higher than 16 V and lower than 32 V.

・ DTC: 1630 is not detected. ・ Key switch input power supply voltage is higher than 16 V and lower than 32 V.

CAN communicatin abnormality Key switch input power supply voltage is 12 V or higher.

2106 CAN time-out abnormality CAN communicatin abnormality ・ DTC: 2104 is not detected. ・ Key switch input power supply voltage is 12 V or higher. DTC setting conditions

When battery voltage is from 16 V to 32 V, the key switch power supply voltage is 5.5 V or higher or 4.5 V or lower.

Trouble judgment time About 0.5 sec.

When battery voltage is from 16 V to 32 V, the key switch power supply voltage is 5.5 V or higher or 4.5 V or lower. About 0.5 sec.

When battery voltage is from 16 V to 32 V, the key switch power supply voltage is 5.5 V or higher or 4.5 V or lower. About 0.5 sec. Behavior during trouble

For backup equivalent to 2500 m ・ Black smoke at high altitude ・ Output shortage at low altitude Back-up: Same as atmospheric pressure or IAT (intake air temperature) sensor abnormality Startability deteriorates at low temperatures or black smoke emission is possible, output lowering or effect on machine operationality depending on conditions. Back-up: Same as engine coolant temperature, fuel temperature, or oil pressure sensor abnormality Effect on machine operationality Back-up: Same as boost pressure or boost temperature sensor abnormality

When battery voltage is from 16 V to 32 V, the key switch power supply voltage is 5.5 V or higher or 4.5 V or lower. About 0.5 sec. Engine blow up, output lowering, black smoke emission, engine stall are possible. Back-up: Same as common rail pressure sensor or EGR position sensor abnormality

Bus off detection About 3 sec. ・ Vary depending onsetting. ・ CAN communication disconnects. Back-up: Becomes designated speed which is requested 80t: 1100 min-1 70t: 1250 min-1

Specified time, CAN data reception is not established. About 1 sec. ・ Vary depending on setting. ・ CAN communication keeps on connecting. Back-up: Becomes designated speed which is requested 80t: 1100 min-1 70t: 1250 min-1 Recovery from failure Conceivable cause

*2 Power supply circuit wiring problem (short) between ECM and atmospheric pressure sensor ECM internal problem

*2 Power supply circuit wiring problem (short) between ECM and oil pressure sensor ECM internal problem

*2 Power supply circuit wiring problem (short) between ECM and boost pressure sensor ECM internal problem

*2 Power supply circuit wiring problem (short) between ECM and common rail pressure sensor ECM internal problem

*2 Wiring problem (disconnection, short, high resistance) between ECM and computer A ECM internal problem Computer A internal problem

*2 Vary depending on Back-up: Specified back-up value (depending on the machine manufacturer)