Troubleshoot DTC setting conditions
Trouble judgment time
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.
When battery About 0.5 voltage is from 16 sec. V to 32 V, the key switch power supply voltage is 5.5 V or higher or 4.5 V or lower.
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
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.
When battery About 0.5 voltage is from 16 sec. V to 32 V, the key switch power supply voltage is 5.5 V or higher or 4.5 V or lower.
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
*2
Power supply circuit wiring problem (short) between ECM and oil pressure sensor ECM internal problem
1634
5 V power supply 4 voltage abnormality (boost 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.
When battery About 0.5 voltage is from 16 sec. V to 32 V, the key switch power supply voltage is 5.5 V or higher or 4.5 V or lower.
Effect on machine operationality Back-up: Same as boost pressure or boost temperature sensor abnormality
*2
Power supply circuit wiring problem (short) between ECM and boost pressure sensor ECM internal problem
1635
5 V power supply 5 voltage abnormality (common rail pressure sensor, EGR position sensor power supply)
・ DTC: 1630 is not detected. ・ Key switch input power supply voltage is higher than 16 V and lower than 32 V.
When battery About 0.5 voltage is from 16 sec. V to 32 V, the key switch power supply voltage is 5.5 V or higher or 4.5 V or lower.
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
*2
Power supply circuit wiring problem (short) between ECM and common rail pressure sensor ECM internal problem
2104
CAN Bus 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
*2
Wiring problem (disconnection, short, high resistance) between ECM and computer A ECM internal problem Computer A internal problem
2106
CAN time-out CAN ・ DTC: 2104 is not abnormality communicatin detected. abnormality ・ Key switch input power supply voltage is 12 V or higher.
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
*2
Vary depending on Back-up: Specified back-up value (depending on the machine manufacturer)
TST-10-06-005EN
CAN Key switch input power communicatin supply voltage is 12 V or abnormality higher.
Power supply circuit wiring problem (short) between ECM and atmospheric pressure sensor ECM internal problem
AL
*2
Conceivable cause
E
IN
TE RN
Behavior during trouble
Recovery from failure
DTC name
CO US N F E ID O E F N TS TI M AL GL : F O OR BA T L H
Detected item
Preconditions when DTC is set
DTC
99 8
