Hello -
I have attached a TSB on blowing fuses. . .. . ...this may be your problem. I would start here.
MIL ON - Blown Fuse 25 Or 26, Harsh Upshifts/Slipping
Notes
Classification: EL95-014
Reference: NTB95-101
Date: October 4, 1995
1995 ALTIMA MIL LIGHT "ON" - BLOWN FUSE INCIDENT
APPLIED VEHICLE: 1995 Altima (U13)
SERVICE INFORMATION
If an Altima customer experiences a MIL light "On", instrument meters inoperative, blown fuse # 25 or blown fuse # 26 incident along with various automatic transmission shift related incidents such as:
Harsh upshifts
Slipping
A/T stuck in 3rd gear "Fail-safe".
There are two possible causes for this incident:
1. The engine room harness or engine sub-harness No. 2 may be chafing on the top of the transmission case under the battery tray
2. The instrument wire harness below the passenger side air bag module may be chafed by the air bag harness support bracket.
SERVICE PROCEDURE
To diagnose and repair this incident use the following information:
1. Inspect for blown fuse # 25 or blown fuse # 26.
2. Using CONSULT, inspect for stored DTCs (Diagnostic Trouble Codes) in ENGINE and A/T SELF-DIAGNOSIS RESULTS. Also inspect and print any FREEZE FRAME DATA that may be stored in the engine ECCS ECM memory.
3. Verify one (1) or more of the following DTCs have been stored in ECM and A/T control unit memories:
P1605 A/T Diagnosis Communication Line, an open or shorted harness exists between the ECM and A/T control unit.
P1705 Throttle position sensor low voltage signal to the A/T control unit.
P1760 Overrun clutch solenoid valve improper voltage drop when A/T control unit tries to operate solenoid valve.
P0705 Inhibitor switch improper or no gear position indicated to the A/T control unit.
P0710 A/T Fluid temperature sensor circuit high or low voltage received by the A/T control unit.
P0740 Torque converter clutch solenoid valve improper voltage drop when the A/T control unit tries to operate solenoid valve.
P0745 Line pressure solenoid valve improper voltage drop when the A/T control unit tries to operate solenoid valve.
P0750 Shift solenoid valve "A" improper voltage drop when the A/T control unit tries to operate solenoid valve.
P0755 Shift solenoid valve "B" improper voltage drop when the A/T control unit tries to operate solenoid valve.
4. If the instrument meters are inoperative and fuse # 25 is blown, inspect the engine room harness and engine sub-harness No. 2 on top of the transmission case and under the battery tray. (Repair Procedure # 1.)
5. If any of the DTC's listed in step # 3 have been stored in the engine ECCS ECM and A/T control unit memories, the A/T exhibits a harsh shift, slips when upshifting, is stuck in 3rd gear "fail-safe", or fuse # 26 is blown, inspect the instrument harness behind the glove box and below the passenger side air bag module for damage or chafing. (Repair Procedure # 2.)
Repair Procedure # 1
1. Raise the vehicle on the hoist and remove the driver's side splash shield.
2. Inspect the engine room harness and engine sub-harness No. 2 in the vicinity of connectors E15/E213 for chafing. Also inspect the engine sub-harness as it routes along the top of the transmission case. Note : The damage to the harness may be as small as a pin hole.
3. Repair any damaged wires as necessary.
After making the necessary repairs to the engine harness, erase any stored DTCs and FREEZE FRAME DATA from the engine ECM as well as the A/T control unit. Replace any blown fuses.
Reroute harness away from the transmission case and proceed to Repair Procedure # 2.
Repair Procedure # 2
1. Record the pre-set AM and FM radio stations.
2. Disconnect the negative battery terminal.
3. Remove the glove box lid and glove box.
4. Remove the passenger side air bag module. (See S/M pg. 11 for cautions.)
5. Inspect the instrument harness directly below the passenger side air bag module for signs of chafing or damage. The harness may be chafing against the air bag harness support bracket that has been welded to the instrument panel support bracket. Note : The damage to the harness may be as small as a pin hole.
6. Repair any damaged wires as necessary.
7. Position and secure harness away from the support bracket using a nylon tie (If no damage is found on the instrument harness, reroute harness away from the support bracket and inspect other areas for the possible cause.)
8. Reinstall the passenger side air bag module.
9. Reinstall the glove box lid and glove box.
10. Reconnect the negative battery terminal.
11. Program the AM and FM radio stations and reset the clock.
After making the necessary repairs to the instrument harness, erase any stored DTC and FREEZE FRAME DATA from the engine ECM as well as the A/T control unit. Replace any blown fuses. Test drive the vehicle under the conditions listed in Freeze Frame Data. Verify the A/T control unit and engine ECM do not store any of the above listed DTCs.
Saturday, January 17th, 2009 AT 1:10 PM
