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Home >> Pontiac >> 2007 >> Solstice GXP, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Automatic Transmission - 5L40-E/5L50-E - DTC P0973 To DTC P2764) >> DTC P1823 >> Circuit Description

Circuit Description

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

The transmission manual shift shaft switch assembly is a sliding contact switch attached to the control valve body within the transmission. The 4 inputs to the transmission control module (TCM) from the switch indicate which position is selected by the transmission selector lever. This information is used for engine controls as well as determining the transmission shift patterns. The input voltage at the TCM is high when the switch is open and low when the switch is closed to ground. The state of each input is displayed on the scan tool as IMS. The 4 IMS input parameters represented are Signal A, Signal B, Signal C and Signal P (Parity).

If the TCM detects a short to ground on the TR signal P circuit, DTC P1823 sets. DTC P1823 is a type B DTC.

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