F341562 BACK PLATE, WATER PUMP Force
H0060B76A, H0060B78B, H0060H79C, H0060H80D, H0062H79M, H0064H78D, H0064H80F, H0070B79A, H0071H81B, H0071H82C, H0071H83D, H0075H79A, H0082H76G, H0082H79K, H0091B80B, H0091H79A, H0091H83C, H0091H84D, H009201RS, H009201SD, H0092284D, H0092B80G, H0092H79
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Compatible models:
H0060B76A
H0060B78B
H0060H79C
H0060H80D
H0062H79M
H0064H78D
H0064H80F
H0070B79A
H0071H81B
H0071H82C
H0071H83D
H0075H79A
H0082H76G
H0082H79K
H0091B80B
H0091H79A
H0091H83C
H0091H84D
H009201RS
H009201SD
H0092284D
H0092B80G
H0092H79F
H0092H81H
H0092H81J
H0092H83K
H0092H84L
H0092S88A
H0092S91A
H0093S91A
H0094H81F
H0095B80F
H0095B81G
H0095H82H
H0101B78A
H0102H76C
H0102H78E
H0121B79A
H0122H79E
H0125H79E
H015201RS
H015211SS
H0152B78D
H0152B83J
H0152C84K
H0152H79E
H0152H80F
H0152H81G
H0152S89A
H0252H77B
H0252H78C
H0252H78D
H0254H75A
Force
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Information:
Illustration 1 g01182972Schematic for the injection actuation pressure sensorTest Step 1. Check for Active Diagnostic Codes
Connect the Caterpillar Electronic Technician (ET) to the service tool connector. Refer to Troubleshooting, "Electronic Service Tool".
Turn the keyswitch to the ON position. Note:
Observe the "Active Diagnostic" screen on Cat ET. Wait at least 15 seconds so that any codes may become active. Look for an active 164-02 diagnostic code. Note: If a 164-03 Injector Actuation Pressure voltage high or a 164-04 Injector Actuation Pressure voltage low is active, refer to Troubleshooting, "Engine Pressure Sensor Open or Short Circuit - Test".Expected Result:The 164-02 diagnostic code is active.Results:
Active code - The 164-02 diagnostic code is active. Proceed to Test Step 3.
No active code - The 164-02 diagnostic code is not active. Proceed to Test Step 2.Test Step 2. Try to Start the EngineTry to start the engine.Expected Result:The engine starts.Results:
OK - The engine starts. There are no active codes for the injection actuation pressure sensor and the engine starts.Repair: There may be an intermittent problem in a harness that is causing the code to be logged. Refer to Troubleshooting, "Electrical Inspectors - Inspect".STOP
Not OK - The engine does not start.Repair: Refer to Troubleshooting, "Engine Cranks but Will Not Start".STOPTest Step 3. Inspect the Electrical Connectors and the Wiring
Turn the keyswitch to the OFF position.
Illustration 2 g01182300
Left side engine view (typical component locations)
(1) Injection Actuation Pressure Control Valve (IAPCV)
(2) Injection actuation pressure sensor
(3) J2/P2 ECM connector
(4) Pressure port for high pressure oil supply
(5) Low pressure oil line
Illustration 3 g01161363
Left side engine view (typical example)
(1) J500/P500 Injection actuation pressure control valve connector
(2) Injection actuation pressure sensor
(3) J2/P2 ECM connector Note: There are two possible locations for the injection actuation pressure sensor. Refer to Illustrations 2and 3.
Thoroughly inspect the connectors for sensors (1) and (2). Also, thoroughly inspect connectors (3). Refer to Troubleshooting, "Electrical Connectors - Inspect".
Illustration 4 g01183027
P2 terminals that are associated with the injection actuation pressure sensor
(P2-2) +5 VDC
(P2-3) Return
(P2-27) Injection actuation pressure sensor
Illustration 5 g01159881
Connectors for the injection actuation pressure sensor
(A) +5 V Supply
(B) Return
(C) Signal
Perform a 45 N (10 lb) pull test on each of the wires that are associated with the injection actuation pressure sensor.
Check the torque of the allen head screws for the ECM connectors. Refer to Troubleshooting, "Electrical Connectors - Inspect" for the correct torque values.
Check the harness and wiring for abrasion and for pinch points from the sensor back to the ECM. Expected Result:All connectors, pins, and sockets are completely coupled and/or inserted. The harness and wiring are free of corrosion, of abrasion, and of pinch points.Results:
OK - The connectors and wiring are OK. Proceed to Test Step 4.
Not OK - There is a problem in the wiring and/or a connector.Repair: Repair the wiring and/or the connector. 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 4. Check the Status of the Sensor
Turn the keyswitch to the ON position.
Check the value of the "Injection Actuation Pressure" on Cat ET. Note: If a 164-03 code is active or a 164-04 code is active, the status for the injection actuation pressure will default to 17500 kPa (2538 psi).Expected Result:The value of the "Injection Actuation Pressure" is 0 kPa (0 psi).Results:
OK - The status for the injection actuation pressure is 0 kPa (0 psi). Proceed to Test Step 6.
Not OK - The status for the injection actuation pressure is above 0 kPa (0 psi). Proceed to Test Step 5.Test Step 5. Check the Voltage Supply to the Injection Actuation Pressure Sensor
Turn the keyswitch to the OFF position.
Disconnect the injection actuation pressure sensor at the harness connector.
Turn the keyswitch to the ON position.
Measure the voltage between terminals A and B on the harness side of the connectors for the injection actuation pressure sensor. Expected Result:The voltage reading is 5.0 0.2 VDC.Results:
OK - The voltage is within the specified range. The sensor is receiving supply voltage. Proceed to Test Step 6.
Not OK - The voltage is not within the specified range.Repair: Refer to Troubleshooting, "5 Volt Engine Pressure Sensor Supply Circuit - Test".STOPTest Step 6. Compare the Sensor's Output to a Pressure Gauge
Hot oil and hot components can cause personal injury. Do not allow hot oil or hot components to contact the skin.
Turn the keyswitch to the OFF position.
Install a 8T-0852 Pressure Gauge in one of the unused oil ports in the high pressure oil rail on the left side of the cylinder head.
Start the engine.
Go to the "Injection Actuation Pressure Test" on the diagnostic menu of Cat ET.
Start the "Injection Actuation Pressure Test".
Refer to Table 1. Observe the value of the "Injection Actuation Pressure" on Cat ET. Vary the engine speed in order to obtain each "Injection Actuation Pressure" value that is listed in the Table. For each pressure value, observe the reading on the pressure gauge.