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Home >> Ford >> 2005 >> Escape Base, 3.0 1, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 36 (Engine Controls - Pinpoint Tests - (Hybrid)) >> TD: Torque Of Motor Signal >> Test Procedures

Test Procedures

WARNING: This page is about a different variant/trim than selected.
  1. TD1 DTC P0A18: VERIFY THAT THE HARD FAULT IS PRESENT 
    • Record and clear all continuous memory DTCs.
    • Retrieve the PCM continuous memory DTCs.

    Is DTC P0A18 present? 

    Yes No
    GO to  TD2 GO to  TD7
  2. TD2 CHECK THE TMAC CIRCUIT FOR AN OPEN IN THE HARNESS 
    • Key in OFF position.
    • PCM connector disconnected.
    • Transaxle Assembly-B connector disconnected.
    • Measure the resistance between:
    ( + ) PCM Connector, Harness Side ( - ) Transaxle Assembly-B Connector, Harness Side
    TMAC - Pin T7 TMAC - Pin 4

    Is the resistance less than 5 ohms? 

    Yes No
    GO to  TD3 REPAIR the open circuit.
  3. TD3 CHECK THE TMAC CIRCUIT FOR A SHORT TO POWER IN THE HARNESS 
    • Key in ON position.
    • Measure the voltage between:
    ( + ) PCM Connector, Harness Side ( - ) Vehicle Battery
    TMAC - Pin T7 Negative terminal

    Is the voltage less than 1 V? 

    Yes No
    Key in OFF position.
    GO to  TD4    		 Key in OFF position. REPAIR the short circuit to PWR.
  4. TD4 CHECK THE TMAC CIRCUIT FOR A SHORT TO GROUND IN THE HARNESS 
    • Measure the resistance between:
    ( + ) PCM Connector, Harness Side ( - ) Vehicle Battery
    TMAC - Pin T7 Negative terminal

    Is the resistance greater than 10K ohms? 

    Yes No
    GO to  TD5 REPAIR the short circuit to GND.
  5. TD5 CHECK FOR THE TMAC CIRCUIT SHORTED TO SIGNALS IN THE SAME HARNESS 
    • Measure the resistance between:
    ( + ) Transaxle Assembly-B Connector, Harness Side ( - ) Transaxle Assembly-B Connector, Harness Side
    TMAC - Pin 4 ISDN2 - Pin 7
    TMAC - Pin 4 GSDN-Pin10
    TMAC - Pin 4 CTO - Pin 1
    TMAC - Pin 4 TGAC - Pin 9
    TMAC - Pin 4 MSDN - Pin 5

    Are the resistances greater than 10K ohms? 

    Yes No
    GO to  TD6 Key in OFF position. REPAIR the short circuit.
  6. TD6 TMAC FUNCTIONAL TEST 
    • PCM connector connected.
    • Transaxle Assembly-B connector connected.
    • Isolate the TMAC pin from the Transaxle-B connector.
    • Connect a 5 amp fused jumper wire between the following:
      Point A Transaxle Assembly-B Connector, Harness Side Point B Transaxle Assembly-B Connector, Harness Side
      TMAC-Pin4 4TGAC-Pin9
    • Key on engine running.

    Does the engine start now? 

    Yes No
    Key in OFF position. INSTALL a new transaxle assembly. Key in OFF position. INSTALL a new PCM. REFER to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) .
  7. TD7 CHECK THE TMAC CIRCUIT FOR AN INTERMITTENT CONCERN 
    • Key in ON position.
    • Access the PCM and monitor the TMAC PID.
    • Carefully wiggle all accessible wiring and connectors associated with the circuit and look for a change in the PID state.

    Is a concern present during the wiggle test? 

    Yes No
    Key in OFF position.
    REPAIR as necessary.    		 Key in OFF position.
    GO to Pinpoint Test Z .
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