1997 Ford Probe Base, AutomaticFACTORY OEM SERVICE PROCEDURE

Test E: No Response From Cellular Phone Module (CPM)

WARNING: This page is about a different car, the 1997 Lincoln Mark VIII. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect 42-pin harness connector C214. Harness connector C214 is located below driver's side of instrument panel, to the left of steering column. See Figure .
  2. Using ohmmeter, check resistance between terminal No. 2 (Tan/Orange wire) on Data Link Connector (DLC) and terminal No. 32 (Tan/Orange wire) on female side of harness connector C214. See Fig 1 . Note resistance and go to next step.
  3. Using ohmmeter, check resistance between terminal No. 10 (Pink/Light Blue wire) on DLC and terminal No. 33 (Pink/Light Blue wire) on female side of harness connector C214. See Fig 1 . Note resistance and go to next step.
  4. If resistance is 5 ohms or less on both circuits, go to next step. If resistance is more than 5 ohms on any circuit, repair open circuit on Tan/Orange wire or Pink/Light Blue wire between DLC and harness connector C214. Repeat TEST A  .
    Fig 1: Checking Resistance Between DLC & Harness Connector C214
    G97A28498Courtesy of FORD MOTOR CO.
  5. Reinstall harness connector C214. Disconnect 16-pin harness connector C307. Harness connector C307 is located behind passenger's side rear panel. See Figure .
  6. Using ohmmeter, check resistance between terminal No. 2 (Tan/Orange wire) on DLC and terminal No. 11 (Tan/Orange wire) on female side of harness connector C307. See Fig 2 . Note resistance and go to next step.
  7. Using ohmmeter, check resistance between terminal No. 10 (Pink/Light Blue wire) on DLC and terminal No. 6 (Pink/Light Blue wire) on female side of harness connector C307. See Fig 2 . Note resistance and go to next step.
  8. If resistance is 5 ohms or less on both circuits, go to next step. If resistance is more than 5 ohms on any circuit, repair open circuit on Tan/Orange wire or Pink/Light Blue wire between DLC and harness connector C307. Repeat TEST A  .
    Fig 2: Checking Resistance Between DLC & Harness Connector C307
    G97B28499Courtesy of FORD MOTOR CO.
  9. Disconnect Black 16-pin connector C402 from Cellular Phone Module (CPM). The CPM is located in the trunk, on panel below rear window and contains a Black 16-pin connector and a Black 12-pin connector.
  10. Using ohmmeter, check resistance between terminal No. 11 (Tan/Orange wire) on male side of harness connector C307 and terminal No. 16 (Tan/Orange wire) on connector C402 for CPM. See Fig 3 . Note resistance and go to next step.
  11. Using ohmmeter, check resistance between terminal No. 6 (Pink/Light Blue wire) on male side of harness connector C307 and terminal No. 15 (Pink/Light Blue wire) on connector C402 for CPM. See Fig 3 . Note resistance and go to next step.
  12. If resistance is 5 ohms or less on both circuits, go to next step. If resistance is more than 5 ohms on any circuit, repair open circuit on Tan/Orange wire or Pink/Light Blue wire between harness connector C307 and connector C402 for CPM. Repeat TEST A  .
  13. Inspect terminals No. 15 and 16 on connector C402 for damage. Also inspect corresponding pins on CPM for damage. If terminals on connector C402 and pins on CPM are okay, replace CPM. Repeat TEST A  . If terminals on connector C402 or pins on CPM are damaged, repair as needed. Repeat TEST A  .
Fig 3: Checking Resistance Between Harness Connector C307 & Connector C402
G97E28500Courtesy of FORD MOTOR CO.
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.