Sensor (Data Link Type) - Test (UENR3891-03)

SMCS - 1439 i08576393

Implement ECM PPT

-
202 0101
The following is a list of Diagnostic Trouble Codes (DTCs) that are associated
4 /0
with the Data Link Type sensors of the machine. 0FA
05: 4/0 5
Table 1 51: 8
UE 46+
NR 10:
Implement ECM

DTC Code Description ©2 389 00 System Response

024 1 This event could indicate an internal problem
Cat with the sensor.
872-
Pitch Rate Sensor :
erp See electrical schematic.
2
Erratic, Intermittent, or
illa
If ECM does not get Pitch Rate Sensor
Incorrect
r In
information, then the stable blade feature will
c.
not function.

If ECM does not get Pitch Rate Sensor

872- Pitch Rate Sensor :
information, then the stable blade feature will
9 Abnormal Update Rate
not function.

Machine components that directly

communicate on this link will be unavailable.
Chassis Angle Sensor :
1952- (See machine schematic.)
Erratic, Intermittent, or
2 Could be the instance pins to the sensor are
Incorrect
not hooked up correctly on pins 3 and 4.
See electrical schematic.

Machine components that directly

1952- Chassis Angle Sensor :
communicate on this link will be unavailable.
9 Abnormal Update Rate
(See machine schematic.)

Machine components that directly

communicate on this link will be unavailable.
Machine Pitch Sensor : (See machine schematic.)
2110-
Erratic, Intermittent, or Could be the instance pins to the sensor are
2
Incorrect

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not hooked up correctly on pins 3 and 4.
See electrical schematic.

Third gear will be unavailable when operating

2110- Machine Pitch Sensor : in EAS mode.
9 Abnormal Update Rate Slope / Side slope feature in display will show
stars.

PPT
The CID 1952 diagnostic code is associated with the inclination sensor that is

202 -0101
used for tool automation features. This sensor replaces the CID 2110 component

4 0FA
when certain features are installed. The CID 1952 sensor has more capability and
/0
05: 4
is often called the 6DF sensor since the sensor has 6 degrees of freedom listed
5
below:
51: /08
pitch UE 46+
NR 10:
roll ©2 389 00
yaw 024 1
Cat
pitch rate erp
illa
roll rate
r In
yaw rate c.
The diagnostic code is recorded when the ECM detects that the data from the
sensor is not reliable.

Possible Causes for an FMI 2 diagnostic code are:

Sensor mounting is not secure

The sensor has failed

Sensor vibration/shock limits have been exceeded

The diagnostic code is recorded when the ECM does not receive the expected
information from the sensor over the (CAN) data link.

Possible Causes for an FMI 9 diagnostic code are:

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An open or a poor connection exists in the circuit for the CAN Data Link in
the Implement ECM

The terminating resistors are open or the resistors are disconnected

The sensor has failed

PPT
-
202 0101
4 0
05: 04/0 FA5
/
51: 8
UE 46+
NR 10:
©2 389 00
024 1
Cat
erp
illa
r In
c.

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PPT
-
202 0101
4 0
05: 04/0 FA5
/
51: 8
UE 46+
NR 10:
©2 389 00
024 1
Cat
erp
illa
r In
c.

Illustration 1 g03589332
Schematic for the Implement ECM Data Link Type sensors
Note: The diagram above is a simplified schematic of the electrical circuit. The
schematic is electrically correct. However, not all of the possible harness
connectors are shown. Refer to the latest revision of the Electrical Schematic,
UENR4060 for the complete schematic.

Troubleshooting Procedure

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Note: Prior to beginning this procedure, inspect the harness connectors that are
involved in this circuit. Poor connections can often be the cause of a problem in
an electrical circuit. Verify that all connections in the circuit are clean, secure, and
in good condition. If a problem with a connection is found, correct the problem
and verify that the diagnostic code is active before performing a troubleshooting
procedure. For sensors powered via the fuse panel, check the condition of the
appropriate fuse before beginning the troubleshooting procedure.

Note: If a sensor is replaced, calibration is required.

Table 2

Troubleshooting Test Steps Values Results

PPT FMI 2 diagnostic code,

202 -0101
proceed to Test Step 2.
1. Identify Active DTC Code
Associated With Sensor Circuit 4 /0 0FA Code present
FMI 9 diagnostic code,
05: 4 5
51: /08
proceed to Test Step
6.
UE 46+
NR
Begin Process For FMI 02 Troubleshooting Here
10:
©2 389 00 OK - All part numbers

024 1 are correct, proceed to

test Step 3.
Cat
erp NOT OK - No ECM
illa shows any of the
r In location codes listed.
c. There is a problem with
the machine harness.
2. Verify The Hardware And The
Software Part Numbers Repair: Repair the
machine harness or
A. Using "WinFlash" to check that the replace the machine
latest software for each ECM harness.
corresponds with the correct location
code. Check with your dealer for the NOT OK - All part
latest software part numbers. numbers are NOT
All part
correct. The installed

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B. Check the part number of the flash numbers are ECM has the wrong
software for the ECM. correct. part number or
incorrect configuration
C. Check the part number of the software is installed.
Switch Panel.
Repair: Flash the
D. Check the part number of the correct configuration
ECM. software on the ECM
with the displayed
location code. Refer to
Troubleshooting,
"Electronic Control
Module (ECM) - Flash
Program".

PPT Proceed to Test Step

13.
-
202 0101
3. Inspect The Harness Connections
4 /0 0FA
05: 4 5
A. Turn the disconnect switch to the
51: /08
46+
OFF position.
UE
NR
B. Inspect all harness connections that 10:
©2
are related to the location codes. 389 00
Make sure that the connectors are 024 1
clean and tight.
Cat
erp
C. Check the connectors for proper
illa OK - The machine
mating. Ensure that all the seals are
present and in place. r In harness connectors are
c. tight and free of
corrosion.
D. Check the harness for signs of
damage or abrasion.
Proceed to Test Step 4.
E. Check the wires at the connector. The machine
NOT OK - The
Ensure that the wires are secured harness
machine harness
tightly into the connector. Take care connectors
connectors are in need
not to pull the wire out of the are tight and
of repair.

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connector. free of
corrosion. Repair: Repair or
F. Check the exposed wires at the replace the machine
connectors for nicks or signs of harness.
abrasion.
Proceed to Test Step
G. Check for moisture inside the 13.
connector.

H. Check the connectors for dirty

contacts or corroded contacts.

J. Check each pin and each socket of

the machine harness connectors.
Ensure that the contacts are properly
installed. The contacts should mate
correctly when the two pieces of the
connector are placed together.
PPT
-
202 0101
OK - Each of the
resistance

4 0
05: 04/0 FA5
measurements are less
/ than 5 Ω.
4. Check For Shorts to ground
51: 8
UE 46+ Proceed to Test Step 5.
A. The disconnect switch remains in
NR 10:
the OFF position.
©2 389 00 NOT OK - One of the
resistance
B. Disconnect the machine harness 024 1 Reading less
measurements is
connectors from the ECM.
Cat than 5 Ω.
greater than 5 Ω. The

erp machine harness has

C. At the machine harness for the
illa failed.
ECM, measure the resistance
r In
between the location code contacts
and the frame ground. c. Repair: Repair or
replace the machine
harness.

Proceed to Test Step

13.

OK - Each of the

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resistance
measurements are
greater than 5K Ω.
5. Check For Shorts to the +Battery
Circuit
Proceed to Test Step
13.
A. The disconnect switch remains in
the OFF position.
NOT OK - One of the
resistance
B. The machine harness remains Reading
measurements is less
disconnected from the ECM. greater than
than 5K Ω. The
5K Ω.
machine harness has
C. At the machine harness for the
failed.
ECM, measure the resistance
between the location code contacts
Repair: Repair or
and all possible sources of the
replace the machine
+battery circuit.
harness.

Proceed to Test Step

13.
PPT
-
Begin Process For FMI 09 Troubleshooting Here

202 0101 OK The FMI 09

4 /0 0FA diagnostic code is not
6. Cycle The Power To The System
05: 4 5
51: /08
active.

UE
A. Turn the key start switch to the
46+ Proceed to Test Step
NR
OFF position. Wait for 15 seconds.
10: The FMI 09 13.

©2
B. Turn the key start switch to the ON 389 00 diagnostic

position. 024 1 code is not

active.
NOT OK - The FMI 09
diagnostic code is
Cat active.
C. Check the status of the diagnostic
erp
code.
illa Proceed to Test Step
r In 7.
c. OK The voltage
measurement is 10 ±
0.5 VDC. The power
circuits for the sensor

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are correct.

Proceed to Test Step 8.

7. Check For Power At The Sensor

NOT OK - The voltage
measurement is not 10
A. The disconnect switch and the key
± 0.5 VDC. The power
start switch remain in the ON
supply for the sensor is
position. Do not start the engine.
not correct. There is an
The voltage open circuit or a bad
B. At the harness side of the sensor,
measurement connection in the
insert the multimeter negative probe
is 10 ± 0.5 machine harness.
along contact "1" wire and the
VDC.
positive probe along contact "6" wire.
Repair: Refer to
Do not disconnect the harness
Electrical System
connector from the sensor.
Schematic, UENR4060
. Examine all of the
C. Measure the voltage.
connectors that are in
the circuit. Ensure that
the connections are
clean and secure.
Repair or replace the
PPT machine harness.

202 -0101 Proceed to Test Step

4 /0 0FA 13.
05: 4 5
8. Check The Resistance Of The
51: /08
Circuit For The Can Data Link
UE 46+
A. Turn the key start switch and theNR 10:
disconnect switch to the OFF ©2 389 00 OK The resistance
position. 024 1 measurement is 60 ± 6
Cat Ω.
B. At the J2 machine harness
erp
connector for the sensor, measure the
illa Proceed to Test Step
resistance between contact wires of
the data link for that circuit wire. See r In 10.

mini Schematic 1. c. NOT OK - The

The resistance resistance

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Inc
.
C. If the resistance measurement is 60 measurement measurement is not 60
ohms, that connector does not have is 60 ± 6 Ω. ± 6 Ω.
an open between either terminating
resistors. If the resistance Repair: The resistance
measurement is 120 ohms, there is an measurement is not 60
open on a CAN line at that connector ± 6 Ω.
between one of the terminating
resistors. If the resistance is greater Proceed to Test Step
than 5000 ohms, there is an open 9.
between that connector and both
terminating resistors. If there is a
measurement of 40 ohms, there is an
extra terminating resistor somewhere
on the line.

OK The resistance
measurements are 120
± 12 Ω. Reconnect the
resistors.

9. Check The Termination Resistors

Proceed to Test Step
10.
A. Disconnect the 3-pin connector for
both of the termination resistors.
NOT OK - One or both
The resistance
B. Measure the resistance between PPT measurements
resistance
measurements are not
contact "A" and contact "B" for the
resistor. Measure the resistance
-
202 0101
are 120 ± 12
Ω.
120 ± 12 Ω.

4 0
05: 04/0 FA5
between contact "A" and contact "B"
for the other resistor. Note the / Repair: Replace the
termination resistors
resistance.
51: 8 that did not measure
UE 46+ 120 ± 12 Ω.
NR 10:
©2 389 00 Proceed to Test Step
024 1 13.

Cat OK The resistance

erp measurements are
10. Check The Circuit Of The Can illa greater than 5000 Ω.
Data Link For A Short To Ground r In
c. Proceed to Test Step

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pill
ar I
n
11.
c.
A. The key start switch and the
disconnect switch remain in the OFF NOT OK - One or both
position. of the resistance
The resistance
measurements are less
measurements
B. At the connector for the than 5 Ω.
are greater
termination resistor, measure the
than 5000 Ω.
resistance between contact "A" wire Repair: The circuit for
and frame ground. At the connector the CAN Data Link is
for the termination resistor, measure shorted to ground.
the resistance between contact "B" Repair or replace the
wire and frame ground. Note the harness.
resistance.
Proceed to Test Step
13.

OK The voltage
measurements are
approximately 2.5
VDC.

11. Check The Circuit For The Can

Proceed to Test Step
Data Link For A Short To The +
12.
Battery

NOT OK - One or both

A. Turn the disconnect switch and the
The voltage resistance
key start switch to the ON position.
PPT
measurements measurements are

B. Measure the voltage between

contact "A" wire and a clean source
are
-
202 0101
approximately
greater than 5 VDC.

of frame ground. Measure the voltage

4
2.5 VDC.
/0 0FA
Repair: The circuit for

05:
between contact "B" wire and a clean
4 /0
the CAN Data Link is
5
source of frame ground. Note the 51: 8 shorted to a positive

voltage.
UE 46+ source of battery.
Repair or replace the
NR 10: harness.
©2 389 00
024 1 Proceed to Test Step

Cat 13.

erp OK The resistance

12. Check For An Open Circuit Of
illa
r In
c.
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4C
ater
pill
The Can Data Link ar I measurement is less

A. Turn the key start switch and the

n than 5 Ω.
c.
disconnect switch to the OFF Repair: The ECM may
position. have failed.

B. Disconnect all of the components Proceed to Test Step

and the terminating resistors from the 13.
CAN Data Link.
The resistance NOT OK - The
C. At a 3-pin connector for one of the measurement resistance
Main Can Resistors, connect a jumper is less than 5 measurements for one
wire between contact "A" and Ω. or more of the circuits
contact "B". is greater than 5000 Ω.

D. At the J2 harness connector for the Repair: The circuit for

Implement ECM. Measure the the CAN Data Link is
resistance between the Data Link open in the harness.
positive contact wire and the Data Repair or replace the
Link negative contact wire . Repeat harness.
for all other Data Link connections for
those wires. See mini Schematic 1. Proceed to Test Step
13.

OK - The suspect
diagnostic code is not
active. The diagnostic
code does not exist at
this time.
PPT
202 -0101
Repair: The initial
diagnostic code was
4 /0 0FA probably caused by a
05: 4 5
51: /08
poor electrical
connection or a short
UE 46+ at one of the harness
NR 10: connectors. Resume

©2 389 00 normal machine

13. Check If The Diagnostic Code

024 1 operation.

Cat
erp
illa
r In
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c.
:
%
©2 389 00
024 1
Cat
Remains
erp STOP.

illa
A. Perform a 45 N (10 lb) pull test on
r In NOT OK - The suspect
each of the wires that are associated
with the circuit. c.
diagnostic code is
active. The diagnostic
code has not been
B. Reconnect all harness connectors. The corrected. The ECM
Verity that the connectors are fully diagnostic may have failed.
seated and clips are fastened. code is not
active. Repair: A failure of the
C. Turn the disconnect switch and the ECM is unlikely. If the
key start switch to the ON position. cause of the diagnostic
code is not found, the
D. Operate the machine. ECM may have failed.
Prior to replacing an
E. Check the status of the suspect ECM, always contact
diagnostic code. the Technical
Communicator for your
dealership for possible
consultation with
Caterpillar®. This
consultation may
greatly reduce repair
time. If the ECM
requires replacement,
see the
Troubleshooting, "ECM
- Replace" section of
this manual for
additional information.

PPT
-
202 0101
STOP.

4 0
05: 04/0 FA5
/
PPT-01010FA5
2024/04/08
51: 8
05:51:31+10:00
UE 46+
i05660355
NR 10:
© 2024 Caterpillar Inc.
©2 389 00
024 1
Cat
erp
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Page 13 of 14

illa
r
:
%
UE 46+
NR 10:
©2 389 00
024 1
Cat
erp
illa
r In
c.

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