2003375 VALVE GP-BRAKE Caterpillar parts
311C, 314C
Rating:
Alternative (cross code) number:
CA2003375
200-3375
2003375
CA2003375
200-3375
2003375
Weight: 3 pounds 1 kg.
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2020-11-12
2020-11-12
Number on catalog scheme:
41
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Information:
The Electronic Control Module (ECM) supplies a regulated voltage of 8.0 0.4 VDC to the throttle sensor.This procedure covers the following diagnostic codes:
041-03 8 Volt DC Supply short to +batt
041-04 8 Volt DC Supply short to groundA +8 V diagnostic code is probably caused by a short circuit to ground or a short circuit to another voltage source in the harness. The next likely cause is a problem with a sensor. The least likely cause is a problem with the ECM.
Illustration 1 g01234104
Schematic for the digital sensor supply
Test Step 1. Inspect the Electrical Connectors and the Wiring
Remove the electrical power from the ECM.
Illustration 2 g01234113
Typical left side view
(1) J1/P1 ECM connectors
Thoroughly inspect connector (1). Inspect the connectors for each digital sensor. Refer to the diagnostic functional test Troubleshooting, "Electrical Connectors - Inspect".
Illustration 3 g01234119
P1 ECM connector
(P1-4) +8 VDC
(P1-5) Return
(P1-66) Throttle position signal
Perform a 45 N (10 lb) pull test on each of the wires that are associated with the digital sensor supply.
Check the torque of the allen head screws for the ECM connectors. Refer to the diagnostic functional test Troubleshooting, "Electrical Connectors - Inspect".
Check the harness and wiring for abrasions and for pinch points from the battery to the ECM. Expected Result:All of the connectors, pins, and sockets are completely coupled and/or inserted, and the harness and wiring are free of corrosion, of abrasion or of pinch points.Results:
OK - The connectors and the wiring are OK. Proceed to Test Step 2.
Not OK - There is a problem with a connector and/or the wiring.Repair: Repair the connector and/or the wiring. Replace parts, if necessary. Ensure that all of the seals are properly in place and ensure that the connectors are completely coupled. Verify that the problem is resolved.STOPTest Step 2. Check for Active Diagnostic Codes
Connect the Caterpillar Electronic Technician (ET) to the service tool connector. Refer to electronic troubleshooting Troubleshooting, "Electronic Service Tools".
Restore the electrical power to the ECM.
Observe the active diagnostic code screen on Cat ET. Wait at least 30 seconds so that any codes may become active. Look for these codes:
041-03 8 Volt DC Supply short to +batt
041-04 8 Volt DC Supply short to groundExpected Result:One of the above diagnostic codes is active.Results:
Active 03 code - A 03 diagnostic code is active. Proceed to Test Step 3.
Active 04 code - A 04 diagnostic code is active. Proceed to Test Step 4.
No active codes - None of the above codes are active.Repair: If any of the above codes are logged and the engine is not running properly, refer to Troubleshooting, "Troubleshooting Without a Diagnostic Code".If the engine is running properly at this time, there may be an intermittent problem in a harness that is causing the codes to be logged. Refer to the diagnostic functional test Troubleshooting, "Electrical Connectors - Inspect".STOPTest Step 3. Check the Voltage on the +8 V Supply Wire
Remove the electrical power from the ECM.
Disconnect the
041-03 8 Volt DC Supply short to +batt
041-04 8 Volt DC Supply short to groundA +8 V diagnostic code is probably caused by a short circuit to ground or a short circuit to another voltage source in the harness. The next likely cause is a problem with a sensor. The least likely cause is a problem with the ECM.
Illustration 1 g01234104
Schematic for the digital sensor supply
Test Step 1. Inspect the Electrical Connectors and the Wiring
Remove the electrical power from the ECM.
Illustration 2 g01234113
Typical left side view
(1) J1/P1 ECM connectors
Thoroughly inspect connector (1). Inspect the connectors for each digital sensor. Refer to the diagnostic functional test Troubleshooting, "Electrical Connectors - Inspect".
Illustration 3 g01234119
P1 ECM connector
(P1-4) +8 VDC
(P1-5) Return
(P1-66) Throttle position signal
Perform a 45 N (10 lb) pull test on each of the wires that are associated with the digital sensor supply.
Check the torque of the allen head screws for the ECM connectors. Refer to the diagnostic functional test Troubleshooting, "Electrical Connectors - Inspect".
Check the harness and wiring for abrasions and for pinch points from the battery to the ECM. Expected Result:All of the connectors, pins, and sockets are completely coupled and/or inserted, and the harness and wiring are free of corrosion, of abrasion or of pinch points.Results:
OK - The connectors and the wiring are OK. Proceed to Test Step 2.
Not OK - There is a problem with a connector and/or the wiring.Repair: Repair the connector and/or the wiring. Replace parts, if necessary. Ensure that all of the seals are properly in place and ensure that the connectors are completely coupled. Verify that the problem is resolved.STOPTest Step 2. Check for Active Diagnostic Codes
Connect the Caterpillar Electronic Technician (ET) to the service tool connector. Refer to electronic troubleshooting Troubleshooting, "Electronic Service Tools".
Restore the electrical power to the ECM.
Observe the active diagnostic code screen on Cat ET. Wait at least 30 seconds so that any codes may become active. Look for these codes:
041-03 8 Volt DC Supply short to +batt
041-04 8 Volt DC Supply short to groundExpected Result:One of the above diagnostic codes is active.Results:
Active 03 code - A 03 diagnostic code is active. Proceed to Test Step 3.
Active 04 code - A 04 diagnostic code is active. Proceed to Test Step 4.
No active codes - None of the above codes are active.Repair: If any of the above codes are logged and the engine is not running properly, refer to Troubleshooting, "Troubleshooting Without a Diagnostic Code".If the engine is running properly at this time, there may be an intermittent problem in a harness that is causing the codes to be logged. Refer to the diagnostic functional test Troubleshooting, "Electrical Connectors - Inspect".STOPTest Step 3. Check the Voltage on the +8 V Supply Wire
Remove the electrical power from the ECM.
Disconnect the
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307B, 307C, 308C, 311B, 311C, 311D LRR, 311F LRR, 312B, 312B L, 312C, 312C L, 312D, 312D L, 312D2, 312D2 GC, 312D2 L, 312E, 312E L, 313B, 313D, 313D2, 313D2 LGP, 314C, 314D CR, 314D LCR, 314E CR, 314E...
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1090, 1190, 1190T, 1290T, 1390, 216, 216B, 216B3, 226B, 226B3, 2290, 232B, 236, 236B, 236B3, 2390, 2391, 242B, 242B3, 247, 247B, 247B3, 2491, 252B, 252B3, 257B, 257B3, 2590, 259B3, 267, 267B, 268B, 28...
305.5, 306, 307C, 307D, 308C, 308D, 311C, 311D LRR, 312C, 312C L, 312D, 312D L, 312D2, 312D2 GC, 312D2 L, 312E, 312E L, 313D, 313D2, 313D2 LGP, 314C, 314D CR, 314D LCR, 314E CR, 314E LCR, 315D L, 316E...
305.5, 306, 306E, 307B, 307C, 307D, 308C, 308D, 311, 311B, 311C, 311D LRR, 312B, 312B L, 312C, 312C L, 312D, 312D L, 313B, 314C, 314D CR, 314D LCR, 315, 315B, 315B L, 315C, 315D L, 317B LN, 318B, 318C...
1290T, 1390, 2491, 2590, 307C, 307D, 307E, 308C, 308D, 308E, 308E CR, 308E SR, 308E2 CR, 311C, 311D LRR, 311F LRR, 312C, 312C L, 312D, 312D L, 312D2, 312D2 GC, 312D2 L, 312E, 312E L, 313D, 313D2, 313D...
311, 311B, 311C, 312, 312B, 312C, 312C L, 314C, 318C, 319C, 320, 320 L, 320B, 320C, 320C FM, 320C L, 320D, 320D LRR, 321B, 321C, 323D L, 323D LN
311, 311B, 311C, 312B, 312C, 312C L, 314C, 318C, 319C, 320 L, 320B, 320C, 320C FM, 320C L, 320D, 320D LRR, 320N, 321C, 323D L, 323D LN
311, 311B, 311C, 312B, 312C L, 320 L, 320B, 320C, 320C FM, 320N
311, 311B, 311C, 312, 312B, 312C, 312C L, 314C, 318C, 319C, 320 L, 320B, 320C, 320C FM, 320C L, 320D, 320D FM RR, 320D LRR, 320D RR, 320N, 321C, 321D LCR, 323D L, 323D LN
311, 311B, 311C, 311D LRR, 312, 312B, 312C, 312C L, 312D, 312D L, 313D, 314C, 314D CR, 314D LCR, 315D L, 318C, 318D L, 319C, 319D, 319D L, 319D LN, 320 L, 320B, 320C, 320C FM, 320C L, 320D, 320D FM, 3...
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311C, 311D LRR, 311F LRR, 312C, 312C L, 312D, 312D L, 312D2, 312D2 GC, 312D2 L, 312E, 312E L, 313D, 313D2, 314C, 314D CR, 314D LCR, 314E CR, 314E LCR
311C, 311D LRR, 311F LRR, 314C, 314D CR, 314D LCR, 314E CR, 314E LCR, 320 L, 320B, 320B FM LL, 320N, 322, 322 FM L, 322B, 322B L, 322B LN, 325, 325 L, 325B, 325B L, 330B, 330B L, E200B, E240, E240C, E...