Tech Tips June 2016 (TIPS 0616)

TECH TIPS JUNE 2016

TECHNICAL SERVICE BULLETIN

03 TRANSMISSION REPLACEMENT PROCEDURES

As a reminder, when installing new or Remanufactured transmissions into Subaru vehicles, it is important to follow ALL  required procedures. Neglecting to follow ALL  required procedures will result in non-warranty failures, comebacks, and unsatisfied customers. Figure 1  is an excerpt from Service Bulletin 03-67-12R, with a specific outlined section on transmission fluids. New or Remanufactured transmissions are not filled with fluids  therefore, these procedures are critical when servicing.

Failing to fill the front differential or the AT with fluid in the replacement transmission will result in catastrophic failure which is not a matter for warranty. Locating the correct fluid type to be used can be found in the applicable Service Manual under the General Description section for the specific unit being installed into the vehicle. In order to verify the specific transmission being serviced (e.g. TR580, TR690), referencing the applicable Service Manual Identification section will assist in locating the unit type label. Figure 2  is an excerpt from the Service Manual showing the process of checking the front differential fluid level on a TR580 CVT.

Please review Service Bulletins 03-67-12R and 16-63-99R for additional procedure information outlining transmission replacement.

07 NO CRANK NO START DIAGNOSIS

If you receive a concern from a customer of a no crank or no start, here are a few things that could aid your diagnosis. Before attempting to diagnose, collect as much information as possible. Often times, the issue is lack of information. Many times when the car will not start, there will be a message on the combination meter which can point you in the right direction. Below are some standard questions that if the customer can answer will help you diagnose the vehicle. If the issue is intermittent and you cannot duplicate, it these are things to review with the customer so they know what to look for if the issue occurs again.

• When the issue occurs, does the green light on the Start button illuminate? If the green light on the push start button does not come on, is it orange or blank? If the light appears blank there is a possibility there was no brake switch input, or there is a power or ground failure. Check the related connections and brake switch input. If power and ground are OK, check the vehicle's ignition lock antenna and related connections.
• Is there any message displayed on the combination meter when the issue occurs? If so, what is the message? Examples below:

  Place vehicle in park:  Indicates the keyless access module is not receiving a park input. Check the park switch in the shifter assembly. If no issue, check the inhibitor switch circuit for failures.

  Keyless access disabled:  Indicates the key is not in range or recognized. Check the in car antenna circuit. If no issue found, be sure to check the fuses and power supply for the keyless access system.

  Steering Wheel Locked:  This indicates the steering wheel lock was not disengaged. Try to wiggle the steering wheel back and forth to release the steering wheel lock. The start button LED will flash GREEN.

• If the vehicle is equipped with a Remote Engine Start, does it operate?
• Have all the keys been tried?
• How often does the issue occur?

  Examples below from a 2016 Impreza:

  Foot Off brake, Access key in vehicle.

  Foot on Brake, Access key in Vehicle.

  Foot off brake, start button pressed (ACC Mode)

  Steering wheel locked message in IP (Start button LED flashes GREEN)

  Key not detected message in combination meter display. Start button LED OFF.

  Transmission select lever is not the "P" position, or the park signal is not received.