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Home >> Chevrolet >> 2009 >> HHR SS, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Automatic Transmission - 4T45-E - DTC P0218 To DTC P2764) >> DTC P1810, P1816, or P1818 >> Component Testing

Component Testing

WARNING: This page is about a different variant/trim than selected.
  1. Ignition OFF, disconnect the automatic transmission (AT) 20-way connector at the transmission.
  2. Install the J 44152  on the transmission side of the AT 20-way connector. See Special Tools .
  3. Test the signal B circuit terminal R for less than 10 ohms of resistance with the transmission in park and infinite resistance with transmission in Drive.
    • If not the specified value, test the signal circuit for a short to ground, a short to voltage, or open/high resistance. If a circuit is shorted or open, replace the internal transmission wiring harness assembly, if the circuits test normal, replace the TFP switch.
  4. Test the signal C circuit terminal P for less than 10 ohms of resistance with the transmission in Drive and infinite resistance with transmission in Park.
    • If not the specified value, test the signal circuit for a short to ground, a short to voltage, or open/high resistance. If a circuit is shorted or open, replace the internal transmission wiring harness assembly, if the circuits test normal, replace the TFP switch.
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