3727634 COVER AS Caterpillar parts
320D, 320D FM
Rating:
Alternative (cross code) number:
CA3727634
372-7634
3727634
CA3727634
372-7634
3727634
EXCAVATOR,
Number on catalog scheme:
24
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Information:
Illustration 1 g02730552
Schematic for the Brake Pump pressure sensor
This diagnostic code is associated with the Brake Pump pressure sensor. An FMI 20 means the Brake ECM has determined the data has drifted high, the sensor signal output is above normal.The sensor outputs a Pulse Width Modulated (PWM) active analog signal to inform the Brake ECM of the hydraulic pressure in the Brake Pump. Possible causes of this diagnostic code are:
The ECM believes that the Service Brake Accumulator Pressure sensor has failed in range.
There is a problem with the physical sensor.
The sensor has failed.
There is a problem with the hydraulic system whereby the brake accumulators are not draining properly.
The Service Brake Accumulator sensor reports a difference in pressure exceeding 2345 kPa (340 psi), after the Brake Accumulators have purged completely, and the engine is not running.
The Brake ECM may have failed, but is unlikely.Note: Poor connections are often the cause of a problem in electrical circuits. Before performing this procedure, inspect all the machine harnesses and connectors involved in the circuit. Make sure to verify that all of the connections in the circuit are clean, secure, and in good condition. Correct any problems found with any of the connections. Verify the diagnostic code CID 1962 FMI 20 is still active, before continuing with this procedure.Note: The following test procedure may create other diagnostic codes. Ignore all the created diagnostic codes now, but clear all those codes after the cause for the original diagnostic code has been corrected.Test Step 1. CHECK IF THE DIAGNOSTIC CODE REMAINS.
There is a problem with the physical sensor. Expected Result:The physical sensor is fine.Results:
YES - The physical sensor is fine. Proceed to step 2.
NO - The physical sensor is not fine.Repair: Repair or replace the physical sensor.See Testing and Adjusting, KENR8738, "793F BRAKING SYSTEM" or Testing and Adjusting, KENR8374, "797F BRAKING SYSTEM".STOPTest Step 2.
There is a problem with the hydraulic system whereby the Brake accumulators are not draining properly. Expected Result:The hydraulic system whereby the Brake accumulators are draining properly.Results:
YES - The hydraulic system whereby the Brake accumulators are draining properly. Proceed to step 3.
NO - The hydraulic system whereby the Brake accumulators are not draining properly.Repair: Troubleshoot the hydraulic system and the Brake accumulators. Repair or replace the faulty parts.See Testing and Adjusting, KENR8738, "793F BRAKING SYSTEM" or Testing and Adjusting, KENR8374, "797F BRAKING SYSTEM".STOPTest Step 3.
Inspect the contacts of the harness connectors and clean the connectors. Check the wires for damage to the insulation that is caused by excessive heat, corrosion, or chafing.
Perform a 45 N (10 lb) pull test on each of the wires that are associated with the sensor circuit.
Turn the disconnect switch and the key start switch to the ON position.
Clear all inactive diagnostic codes.
Operate the machine.
Check the status of the CID 1962 FMI 20 code. Expected Result:The CID 1962 FMI 20 diagnostic code is active.Results:
YES - The CID 1962 FMI 20 The CID 1961 FMI 20 diagnostic code is active. Repair: Failure of the Brake ECM is unlikely. Exit this
Caterpillar parts catalog:
Parts cover Caterpillar catalog:
120G, 120H, 120K, 120K 2, 120M, 120M 2, 12G, 12H, 12K, 12M, 130G, 135H, 1390, 140G, 140H, 140K, 140K 2, 143H, 14H, 160G, 160H, 160K, 163H, 16H, 215, 215B, 2384C, 2484C, 24H, 24M, 2590, 30/30, 305.5, 3...
311, 311B, 311C, 312, 312B, 315, 315B L, 315C, 315D L, 316E L, 317, 317B LN, 318B, 318C, 318D L, 318D2 L, 318E L, 319C, 319D, 319D L, 319D LN, 320 L, 320B, 320C, 320C L, 320D, 320D FM, 320D GC, 320D L...
311, 311B, 312, 312B, 313D2 LGP, 315, 315B, 315B FM L, 315B L, 315C, 315D L, 316E L, 317, 317B LN, 318B, 318C, 318D L, 318D2 L, 318E L, 319C, 319D, 319D L, 319D LN, 320 L, 320B, 320B L, 320C, 320C L, ...
315C, 315D L, 318B, 318C, 318E L, 319C, 319D, 319D L, 319D LN, 320 L, 320B, 320C, 320C FM, 320C L, 320D, 320D FM, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 320D2, 320D2 GC, 320D2 L, 320E, 320E L, 3...
1659553
COVER
303, 303.5C, 303.5D, 303.5E, 303C CR, 304, 304C CR, 304D CR, 304E, 305, 305.5, 305.5D, 305.5E, 305C CR, 305D CR, 305E, 306, 306E, 307C, 307D, 307E, 308C, 308D, 308E, 311C, 311D LRR, 312C, 312C L, 312D...
303, 303.5C, 303.5D, 303.5E, 303C CR, 304, 304C CR, 304D CR, 304E, 305, 305.5, 305.5D, 305.5E, 305C CR, 305D CR, 305E, 306, 306E, 307C, 307D, 307E, 308C, 308D, 308E, 311C, 311D LRR, 312C, 312C L, 312D...
307C, 307D, 311C, 311D LRR, 311F LRR, 312C L, 312D, 312D L, 312D2, 312D2 GC, 313D, 313D2, 315C, 315D L, 318C, 318D L, 318D2 L, 319D L, 320C, 320C FM, 320C L, 320D, 320D FM, 320D GC, 320D L, 320D LN, 3...
311C, 311D LRR, 312C, 312C L, 312D, 312D L, 313D, 314C, 314D CR, 314D LCR, 315D L, 318C, 318D L, 319C, 319D, 319D L, 319D LN, 320C, 320C FM, 320C L, 320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN...
1297863
COVER
318C, 319C, 320C, 320C FM, 320C L, 320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 320D2, 320D2 GC, 320D2 L, 320E, 320E L, 320E LN, 320E LRR, 320E RR, 321C, 321D LCR, 322C, 322...
318C, 319C, 320C, 320C FM, 320C L, 320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 320D2, 320D2 GC, 320D2 L, 320E, 320E L, 320E LN, 320E LRR, 320E RR, 321C, 321D LCR, 322C, 322...
1843983
COVER AS
320B, 320B U, 320C, 320C FM, 320C L, 320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 320D2, 320D2 GC, 320D2 L, 320E, 320E L, 320E LN, 320E LRR, 320E RR, 321C, 321D LCR, 322B L,...
320B, 320B U, 320C, 320C FM, 320C L, 320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 320D2, 320D2 GC, 320D2 L, 320E, 320E L, 320E LN, 320E LRR, 320E RR, 321C, 321D LCR, 322B L,...
3138249
COVER AS
320D, 320D FM
320D, 320D FM
3029770
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320D, 320D FM
320D, 320D FM
2896717
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320D, 320D FM
320D, 320D FM
2896705
COVER AS
320D, 320D FM
320D, 320D FM
2917494
COVER AS
320D FM, 320D FM RR
320D FM, 320D FM RR
3068357
COVER AS
320D, 320D FM
320D, 320D FM
3663693
COVER AS
320D FM, HH44 DE
320D FM, HH44 DE
3655003
COVER AS
320D FM
320D FM
3029917
COVER AS
320D, 320D FM
320D, 320D FM
2967421
COVER
320D FM, 320D FM RR
320D FM, 320D FM RR
3727639
COVER AS
320D, 320D FM
320D, 320D FM
3727627
COVER AS-ACCESS
320D, 320D FM, 320D GC, 323D L
320D, 320D FM, 320D GC, 323D L