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Dan
Dan, Technician
Category: Construction and Road Equipment
Satisfied Customers: 4373
Experience:  17+ yrs. shop and field experience with all major brands of heavy equipment and trucks - 1995 WyoTech graduate.
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I have a new to me cat 930G Loader TWR serial#. The

Customer Question

I have a new to me cat 930G Loader TWR serial#. The exclamation light is blinking on the dash so I retrieved these codes in this order:
081 1251-08,0811-09,0271-06,0271-05,0091-08
036 0174-02,0342-02,1684-14,1684-10,1684-07,1684-09,1684-11
Machine's fluid levels are good and machine operates as it should.
It has about 3500 hrs.
Are these old codes? Should I be concerned?
Thanks,
Mike
Submitted: 10 months ago.
Category: Construction and Road Equipment
Expert:  Dan replied 10 months ago.

Hi Mike, My name is***** with me while I look up these codes and post the information. What other symptoms are you having with this machine?

Customer: replied 10 months ago.
None.
How do I know if they are old or active?
Expert:  Dan replied 10 months ago.

You would need Cat ET for that or clear them and see which ones return

Customer: replied 10 months ago.
How do I clear them?
Expert:  Dan replied 10 months ago.

1251 08

Alternator R-Terminal

This diagnostic code is associated with alternator R-terminal connector.

0009 00-118

Signal Abnormal

FMI 08 means ECM has determined terminal signal is abnormal.

Frequency.

Possible causes of this diagnostic code are: alternator has failed,

intermittent connections or poor connections, mechanical devices are

loose, or ECM has failed (such a failure is unlikely)

Expert:  Dan replied 10 months ago.

Cat ET can clear them and I will have to look up how to clear them without ET.... However Active codes will not clear. Let me get through looking up the codes and then Ill look up the rest for this model.

Expert:  Dan replied 10 months ago.

0271 05

Action Alarm

This diagnostic code is associated with action alarm. FMI 05 means

Open Circuit.

ECM has determined alarm circuit current is below normal.

Possible causes of this diagnostic code are:

· Alarm energize circuit is open.

·

Alarm return circuit is open.

·

Alarm has failed.

·

ECM has failed (such a failure is unlikely)

0271 06

Action Alarm

This diagnostic code is associated with action alarm. FMI 06 means that

0009 00-29

Shorted to Ground.

ECM has determined that current of alarm circuit is above normal.

Possible causes of this diagnostic code are:

· Energize circuit of alarm is shorted to ground.

·

Alarm has failed.

·

ECM has failed (such a failure is unlikely)

Expert:  Dan replied 10 months ago.

So far its looking like you have a charging system problem. Test your batteries, all connections and grounds as well as your alternator and alternator harness connections.... Ill look up the remainder of the codes

Customer: replied 10 months ago.
ok
Expert:  Dan replied 10 months ago.

0811 09

Gage Cluster #1

This diagnostic code is recorded when machine ECM does not receive

0009 00-100

Abnormal Update.

expected information from dash panel cluster for a period of more than

five seconds

0091 08

Throttle Position Signal

ECM will log diagnostic code. This code is generated when an open

0009 00-1

Abnormal.

circuit for throttle position sensor or for voltage supply is present. ECM

returns engine to low idle or a safe speed when problem is detected.

Diagnostic code is logged only if engine is running. ET will indicate

DIAG and a throttle position of 0 percent while diagnostic code is

active. This will happen regardless of position of throttle pedal

assembly. Engine will remain at low idle or at safe speed while code is

active

0174 02

Fuel Temperature Sensor This code is generated when ECM detects a fuel temperature signal that

0009 00-1

Data Erratic.

is erratic or intermittent. Both 174-02 and 342-02 diagnostic codes will

be active if fuel injection pump has suffered a complete failure of

electrical supply or if there has been a communication fault between

ECM and CAN data link for fuel injection pump. ECM will log

diagnostic code only if engine is running. When this code is generated,

engine may shut down or have low power

Expert:  Dan replied 10 months ago.

1684 07

Fuel Injection Pump

This code is generated when ECM detects improper response from fuel

0009 00-2

injection pump, fuel injection, or timing system. ECM will log

Improper Response.

diagnostic code. ECM will cause fuel injection pump to stop injecting

fuel. ECM will then cause engine to shut down

1684 09

Fuel Injection Pump Not This code is generated when fuel injection pump detects a failure of

0009 00-2

Communicating on Link. CAN data link, ECM sent incorrect data, or fuel injection pump sent

incorrect data. ECM will log diagnostic code. ECM will cause fuel

injection pump to stop injection of fuel. When this code is generated,

ECM shuts down engine and will not allow it to restart.

1684 10

Fuel Injection Pump

This code is generated when ECM detects an open circuit, wire shorted

0009 00-3

high, or wire shorted low from fuel injection pump. ECM will log

Abnormal Rate of

diagnostic code. Engine may shut down and not start while diagnostic

Change.

code is active.

1684 11

Fuel Injection Pump

This code is generated by fuel injection pump when there is an internal

0009 00-3

problem with fuel injection pump. There may be air in fuel injection

Unknown Failure.

pump. Voltage and/or resistance at J40/P40 fuel injection pump

connectors are incorrect. ECM will log diagnostic code. ECM will

derate engine speed by 20 percent. Engine may experience low power

and reduced speed while diagnostic code remains active.

Expert:  Dan replied 10 months ago.

1684 14

Fuel Injection Pump.

This code is generated when ECM detects a communication failure with

0009 00-3

fuel injection pump. Communication failure may be due to

disconnected connectors for fuel injection pump or a faulty wiring

harness for fuel injection pump. ECM will log diagnostic code. This

diagnostic code will have no effect on engine performance. Code 1684-

14 is normally accompanied by 174-02 or 320-02. Code 174-02 may

cause engine to have low power. If 320-02 is active, ECM will limit

engine to 1,200 rpm.

Expert:  Dan replied 10 months ago.

Looks like all these faults are voltage related. Test your batteries and charging system. The warning alarm will stop once all codes are inactive and then will be stored in the ECU memory.

Expert:  Dan replied 10 months ago.

Hi Michawl, Did you get this resolved?

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