Shift Solenoid Failure Modes

Shift Solenoid Failure "Always ON":

Failed "ON" due to powertrain control module (PCM) (12A650) and/or vehicle wiring concerns, shift solenoid (7G484) electrically or hydraulically stuck "ON" (TCS off).

SS-1 ALWAYS ON:	Transmission Range Selector Lever Position
	D	2	1
PCM Gear Commanded	Actual Gear Obtained	Actual Gear Obtained	Actual Gear Obtained
1	1	1	1
2	1	1	1
3	4	2*	2*
4	4	2*	2*

* No Engine Braking

SS-2 ALWAYS ON:	Transmission Range Selector Lever Position
	D	2	1
PCM Gear Commanded	Actual Gear Obtained	Actual Gear Obtained	Actual Gear Obtained
1	4	2*	2*
2	3	2*	2*
3	3	2*	2*
4	4	2*	2*

* No Engine Braking

Shift solenoid failure "always OFF":

Failed "OFF" due to powertrain control module and/or vehicle wiring concerns, shift solenoid electrically or hydraulically stuck "OFF" (TCS off).

SS-1 ALWAYS OFF:	Transmission Range Selector Lever Position
	D	2	1
PCM Gear Commanded	Actual Gear Obtained	Actual Gear Obtained	Actual Gear Obtained
1	2	2	2
2	2	2	2
3	3	2*	2*
4	3	2*	2*

*No Engine Braking

SS-2 ALWAYS OFF:	Transmission Range Selector Lever Position
	D	2	1
PCM Gear Commanded	Actual Gear Obtained	Actual Gear Obtained	Actual Gear Obtained
1	1	1	1
2	2	2	2
3	2	2	2
4	1	1	1

Solenoid Operations Charts

Transmission Range Selector Lever Position	PCM Commanded Gear	AODE Solenoids
		SS-1	SS-2	TCC
P/R/N	1	ON	OFF	HD
D	1	ON	OFF	HD
D	2	OFF	OFF	EC
D	3	OFF	ON	EC
D	4	ON	ON	EC
D
w/OD OFF
1	1	ON	OFF	HD
2	2	OFF	OFF	EC
3	3	OFF	ON	EC
Manual 2	2	OFF	OFF	EC
Manual 1	1	ON	OFF	HD
** 1	2	OFF	OFF	EC

** When a manual pull-in occurs above a calibrated speed the transmission will downshift from the higher gear until the vehicle speed drops below this calibrated speed.

EC = Electronically Controlled
HD = Hydraulically Disabled

Vehicle Harness and Transmission Connector