FT2909 Force KNOCK-OFF NUT


FT2909 KNOCK-OFF NUT Force H0060B78B, H0060H79C, H0060H80D, H0062B78J, H0062H79K, H0064H80F, H0064H82H, H0067H79C, H0070B79A, H0071H81B, H0071H82C, H0071H83D, H0071H84E, H0072B81D, H0072H79B, H0072H80C, H0072H82E, H0075H79A, H0082H78J, H0091B80B, H0091H79A, H0091H83C, H0091H84 KNOCK
FT2909 KNOCK-OFF NUT Force
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Force entire parts catalog list:

H0060B78B 1978
H0060H79C 1979
H0060H80D 1980
H0062B78J 1978
H0062H79K 1979
H0064H80F 1980
H0064H82H 1982
H0067H79C 1979
H0070B79A 1979
H0071H81B 1981
H0071H82C 1982
H0071H83D 1983
H0071H84E 1984,1985
H0072B81D 1981
H0072H79B 1979
H0072H80C 1980
H0072H82E 1982
H0075H79A 1979
H0082H78J 1978
H0091B80B 1980
H0091H79A 1979
H0091H83C 1983
H0091H84D 1984
H009201SD 1996,1997
H009201UD 1998
H009201US 1998
H0092284D 1984,1985,1986,1987,1988,1989,1990,1991,1992,1993,1994,1995
H0092B80G 1980
H0092H79F 1979
H0092H81H 1981
H0092H81J 1981,1982
H0092H83K 1983
H0092H84L 1984
H0092S88A 1988
H0092S91A 1991
H0093S91A 1991
H0094H81F 1981,1982
H0095B81G 1981
H0095H82H 1982
H0101B78A 1978
H0102H76C 1976,1977
H0102H78E 1978
H0121B79A 1979
H0122H79E 1979
H0125H79E 1979
H015201US 1998
H015211SS 1996,1997
H0152B78D 1978
H0152B83J 1983,1984
H0152C84K 1984
H0152H79E 1979
H0152H80F 1980
H0152H81G 1981
H0152S89A 1989
H025201RD 1995,1996
H025201TD 1997
H025201TS 1997

Information:

The following background information is related to this procedure:The starting aid is used to improve the engine starting when the engine is cold. With the keyswitch in the ON position, the Electronic Control Module (ECM) will monitor the coolant temperature and the engine air inlet temperature in order to decide if the glow plugs need to be switched ON. If the glow plugs are required, then the ECM will activate the glow plug control unit for a controlled period. While the glow plug control unit is activated, the glow plug control unit will supply power to the glow plugs.Glow plugs are used for temperatures that are below 5° C (41° F).The GCU transmits a diagnostic signal back to the engine ECM. If the GCU detects a fault for one of the glow plugs, a diagnostic code will become active for that glow plug.
Illustration 1 g03723539
Schematic diagram for the glow plug starting aid circuit
Not all connectors are shown. Refer to the Electrical Schematic for the application.
Illustration 2 g03724059
View of the pin locations on the P1 connector for the Glow Plug Control unit (GCU)
(22) GCU diagnostic return
(26) GCU control signal
(41) GCU ground
Illustration 3 g02674096
View of the pin locations on the GCU
(1) Glow plug cylinder 3
(2) Glow plug cylinder 1
(3) GCU diagnostic return
(4) Battery +
(5) GCU ground
(6) Glow plug cylinder 4
(7) Glow plug cylinder 2
(8) Glow plug control Glow Plug Starting Aid OverrideActivate this override using the electronic service tool. This override is used to check that the glow plugs are functioning correctly. The override will remain active until switched off using the electronic service tool.Navigate to the following menu options in the electronic service tool in order to access the "Glow Plug Starting Aid Override":
Diagnostics
Diagnostic Tests
Override Parameters
Table 2
Troubleshooting Test Steps Values Results
1. Inspect Electrical Connectors and Wiring
A. Check the fuses.
B. Inspect the terminals on the GCU. Refer to Troubleshooting, "Electrical Connector - Inspect" for details.
C. Inspect the connectors between the GCU and the glow plugs.
D. Inspect the terminals on the P1/J1 ECM connector and all other connectors associated with the glow plug circuit.
E. Perform a 30 N (6.7 lb) pull test on each of the wires in the ECM connector that are associated with glow plug circuit.
F. Check the harness for abrasion and for pinch points from the glow plugs to the GCU, and from the GCU to the ECM.
Damaged wire or connector
Result: A damaged wire or damaged connector was found. A fuse is blown.
Repair: Repair the damaged wire or the damaged connector. Replace any blown fuses
Use the electronic service tool to clear all logged diagnostic codes. Verify that the repair eliminates the fault.
Result: All connectors, pins, and sockets are correctly connected and/or inserted and the harness is free of corrosion, of abrasion or of pinch points.
Proceed to Test Step 2.
2. Check for Active Diagnostic Codes or Logged Diagnostic Codes
A. Connect the electronic service tool to the diagnostic connector.
B. Turn the keyswitch to the ON position. Do not start the engine.
C. Use the electronic service tool to override the glow plug start aid.
D. Check for active diagnostic codes or recently logged diagnostic codes.
E. Use the electronic service tool to turn off the glow plug start aid.
F. Turn the keyswitch to the OFF position.
Diagnostic codes
Result: A 5324-7, 5325-7, 5326-7, or 5327-7 diagnostic code is active or recently logged.
Proceed to Test Step 3.
Result: A 676-XX diagnostic code is active or recently logged
Proceed to Test Step 6.
Result: An active diagnostic code or a recently logged diagnostic code was not displayed.
Repair: In order to identify intermittent faults, refer to Troubleshooting, "Electrical Connector - Inspect".
3. Check the Glow Plug for the Suspect Cylinder
A. Turn the keyswitch to the OFF position.
B. Disconnect the connectors for the glow plugs in any suspect cylinders. Refer to Table 1 in order to identify which cylinders are suspect.
C. Use a multimeter to measure the resistance between the suspect glow plug connector and a suitable engine ground.
Resistance
Result: The measurement indicates an open circuit between the glow plug and the ground point.
The glow plug is faulty.
Repair: Replace the suspect glow plug. Refer to Disassembly and Assembly, "Glow Plugs - Remove and Install".
Use the electronic service tool to override the glow plug start aid and verify that the repair eliminates the fault. Clear all logged diagnostic codes.
Result: The measurement indicates that there is a resistance between the glow plug and the ground point.
The glow plug is OK.
Proceed to Test Step 4.
4. Check the Glow Plug Wiring for an Open Circuit
A. Turn the keyswitch to the OFF position.
B. Disconnect the connectors for any suspect glow plugs. Disconnect the connector for the GCU.
C. Use a multimeter to measure the resistance between the harness connector for the suspect glow plug and the appropriate terminal on the GCU connector.
Less


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