2-3 Shift Solenoid
WITH 4L60-E AUTOMATIC TRANSMISSION2-3 Shift Solenoid Circuit Check:
Shift Solenoid Chart:
2-3 Shift Solenoid Circuit:
Circuit Description:
The shift solenoids are used inside the valve body to control spool valves and determine the transmission gear. 2-3 shift solenoid is "ON" in first and second gear, and "OFF" in third and fourth gear.
Fused ignition is supplied to 2-3 shift solenoid. The PCM will engage 2-3 shift solenoid by grounding CKT 1223 to energize the solenoid.
Test Description:
Number(s) below refer to circled number(s) on the diagnostic chart.
1. This test checks 2-3 shift solenoid and the internal transmission wiring for shorts.
2. This test checks for power to 2-3 shift solenoid from the ignition through the fuse.
3. This test checks that CKT 1223 is not shorted to ground.
4. This test checks the ability of the PCM to ground or control 2-3 shift solenoid.
Diagnostic Aids:
Check all connections at the transmission pass thru connector. Refer to "PCM Intermittent Diagnostic Trouble Codes or Performance."