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Five Fast Fixes- 4/23/14

Just like you, we see our share of new and unique vehicle problems. The 5 Fast Fixes below are examples of some recent head scratchers that we worked through with customers on our Repair Hotline.

These short-cut tests and confirmed fixes are now at your fingertips along with more than 600,000 Hotline Archives in Direct-Hit.

 

Vehicle:

2007 Hyundai Tiburon GS 2.0L, L4, MFI, DOHC, VIN D, Naturally Aspirated

Mileage:

61,054

Customer Concern:

The vehicle shifts very hard from second to third gear when hot. Replaced the transmission and it still does it. There are no codes.

Tests:

1. Perform the automatic transmission (A/T) adaptive value reset and relearn as described in Technical Service Bulletin 08-AT-007. The TSB states that the only way to reset the A/T adaptive values is with a compatible scan tool. If your scan tool is not capable of the adaptive value reset, try disconnecting the battery and holding the cables together for at least 2 minutes.

Potential Causes:

Automatic Transmission Adaptive Learning Procedure
 

Confirmed Fix:

Performed Automatic Transmission Adaptive Learning Procedure
 

Tech Tips:

~

 
 

Vehicle:

2009 Dodge Journey SXT 3.5L, V6, MFI, SOHC, VIN V

Mileage:

69,000

 

Customer Concern:

The power transfer unit is leaking gear oil out of the vent tube. The fluid is leaking onto the exhaust system.

 

Tests:

1. Add a short length of hose to the vent if not equipped with a hose already. Route the hose up into the engine compartment.

 

Potential Causes:

Power Transfer Unit (PTU) Vent Hose
 

Confirmed Fix:

Repaired Power Transfer Unit (PTU) Vent Hose
 

 

Tech Tips:

Some models are already equipped with the hose.

 
 
 

Vehicle:

2009 Nissan Altima S 2.5L, L4, MFI, DOHC, Eng Desg QR25DE, GAS

Mileage:

100,000

 

Customer Concern:

The Supplemental Restraint System (SRS) light is on with an Occupant Classification System (OCS) sensor mat malfunction code B1018.

 

Tests:

1. Clear the code and see if it returns.

2. If the code returns right away, verify battery voltage at the Occupant Classification System (OCS) Sensor 8 terminal connector at terminal 4 Red/Blue wire, a good ground at terminal 5 Black wire and a reference voltage from the SRS control module at terminal 2 Blue wire with the OCS sensor connector unplugged.

3. If the power, ground, reference voltage and connection are good at the OCS sensor, the OCS sensor has likely failed.

 

Potential Causes:

Occupant Classification System (OCS) Sensor
Front Passenger Seat Cushion

 

Confirmed Fix:

Replaced Front Passenger Seat Cushion: The OCS sensor is part of the seat cushion.
 

 

Tech Tips:

The Occupant Classification System (OCS) Sensor is built into the right seat cushion. The shop manual states "Do not disassemble the seat cushion assembly".

 
 
 

Vehicle:

2010 Chevrolet Express 3500 Base 6.0L, V8, MFI, OHV, VIN G, Eng Desg L96, FLEX

Mileage:

160,000

 

Customer Concern:

No scan tool communication with the Engine Control Module (ECM), Transmission Control Module (TCM), or Electronic Brake Control Module (EBCM).

 

Tests:

1. Try to communicate with the Sensing Diagnostic Module (SDM) and Instrument Panel Cluster (IPC) to see if high and low speed buses are not communicating.

2. Check resistance between terminals 6 and 14 at the Data Link Connector (DLC).

3. If there were 120Ω, disconnect the EBCM.

4. Test the resistance between EBCM terminal 2 and 12. There should be 120Ω.

5. Test the resistance between EBCM terminal 3 and 13. There should be 120Ω.

6. If open between terminals 3 and 13, check for damaged Tan or Tan/Black wires between the EBCM and the Transmission Control Module (TCM).

 

Potential Causes:

Engine Control Module (ECM)
Transmission Control Module (TCM)
High Speed GMLAN Wiring

 

Confirmed Fix:

Repaired High Speed GMLAN Wiring: Broken wire between the Electronic Brake Control Module (EBCM) and X101 connector right underneath the cab at the insulator bushing. Repaired the wiring, Tan with Black stripe.
 

 

Tech Tips:

~

 
 
 

Vehicle:

2008 Mercedes-Benz ML550 Base 5.5L, V8, MFI, DOHC, Eng Desg 273.963

Mileage:

35,972

Customer Concern:

All circuit 15R components (front/rear wiper, all 12 volt cigarette light outlets, and SRS) are not powered.

 

Tests:

1. Hook up a factory scan tool and check for faults in Rear SAM N10/8.

2. Locate circuit 15R relay "R" and use a fused jumper wire to see if all functions are restored.

3. If all functions are restored, check for wetness or corrosion at the Rear SAM N10/8.

 

Potential Causes:

N10/8 Rear SAM Control Unit
Circuit 15r Relay

 

Confirmed Fix:

Replaced N10/8 Rear SAM Control Unit
 

 

Tech Tips:

The Rear SAM N10/8 does require coding with a factory scan tool.

 
 
 
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Five Fast Fixes

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