LEMON Manuals: Even more car manuals for everyone
Home >> Lincoln >> 2012 >> MKZ Hybrid >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Automatic Transaxle (AISIN Aw21)) >> Diagnosis And Testing >> Pinpoint Tests - OSC Equipped Vehicle >> Pinpoint Tests >> Pinpoint Test E: Park Neutral Signal

Pinpoint Test E: Park Neutral Signal

WARNING: This page is about a different variant/trim than selected.
NOTE: Refer to the Transaxle Vehicle Harness Connector illustrations within the TRANSAXLE CONNECTOR LAYOUTS  procedure .
  1. E1 CHECK RESISTANCE ON CIRCUIT CET40 (GN/OG) 
    • Disconnect: PCM C175B.
    • Selector lever in PARK or NEUTRAL.
    • Measure the resistance between C175B-16, circuit CET40 (GN/OG) and chassis ground.
      Fig 1: Measuring Resistance Between C175B-16, Circuit CET40 (GN/OG) And Chassis Ground
      G06263918Courtesy of FORD MOTOR CO.
    • Is the resistance between 13 to 40 ohms? 
      • Yes:  GO to E2.
      • No:  GO to  E3.
  2. E2 CHECK RESISTANCE ON CIRCUIT CET40 (GN/OG) 
    • Selector lever in REVERSE, DRIVE or M.
    • Measure the resistance between C175B-16, circuit CET40 (GN/OG) and chassis ground.
      Fig 2: Measuring Resistance Between C175B-16, Circuit CET40 (GN/OG) And Chassis Ground
      G06263918Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 1000 ohms? 
      • Yes:  INSTALL a new TCM. After installing the new TCM, VERIFY that the starting system is operating correctly. If not, REFER to ENGINE COOLING to check starting system.
      • No:  GO to E3.
  3. E3 CHECK VEHICLE HARNESS CIRCUIT CET40 (GN/OG) FOR AN OPEN 
    • Disconnect: Transmission Control Module (TCM) C1533.
    • Measure the resistance between C1533-5, circuit CET40 (GN/OG) and C175B-16.
      Fig 3: Measuring Resistance Between C1533-5, Circuit CET40 (GN/OG) And C175B-16
      G06263920Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
      • Yes:  GO to E4.
      • No:  REPAIR circuit CET40 (GN/OG) for an open.
  4. E4 CHECK VEHICLE HARNESS CIRCUIT CET40 (GN/OG) FOR A SHORT TO GROUND 
    • Measure the resistance between C1533-5, circuit CET40 (GN/OG) and chassis ground.
      Fig 4: Measuring Resistance Between C1533-5, Circuit CET40 (GN/OG) And Chassis Ground
      G06263921Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10, 000 ohms? 
      • Yes:  INSTALL a new PCM. After installing the new PCM, VERIFY that the starting system is operating correctly. If not, REFER to ENGINE COOLING to check starting system.
      • No:  REPAIR circuit CET40 (GN/OG) for a short to ground.
scientia non olet · About LEMON Manuals