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Home >> Cadillac >> 2004 >> CTS Base, 3.2 N >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 19 (Automatic Transmission - 5L40-E (DTC P0748 To P1832)) >> Automatic Transaxle Diagnosis >> DTC P0751 >> Circuit Description

Circuit Description

WARNING: This page is about a different variant/trim than selected.

The 1-2 shift solenoid (SS) valve is a normally-closed exhaust valve that, in conjunction with the 2-3 shift solenoid (SS) valve, allows 4 different shifting combinations. The 1-2 SS valve is attached to the control valve body, within the transmission.

The TCM monitors the actual gear ratio, and compares the actual gear ratio with the commanded gear ratio. DTC P0751 sets under two conditions:

If the TCM detects a 2-2-3-3-3 shift pattern, then DTC P0751 sets. DTC P0751 is a type B DTC.

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