Copyright © 1998 General Motors Corp. 6–79
WTEC II ELECTRONIC CONTROLS TROUBLESHOOTING MANUAL
Main code 44 indicates the ECU has detected a short-to-ground in a solenoid or its wiring. The DO NOT SHIFT
response is activated when this code is detected and all solenoids are turned off.
NOTE: For subcodes 12, 13, 14, 15, 16, 22 — neutral start is inoperable. Subcodes 21, 23, 24, 25, and 26 do
not trigger the DO NOT SHIFT light.
NOTE: If solenoid resistance is about 1–2 Ohms, a short-to-ground code may not be set but could cause a
burned-out solenoid driver in the ECU. Replace the solenoid when this occurs (see appropriate
transmission Service Manual for replacement procedure). If the solenoid driver is burned out, 69 XX
codes will be set. See the troubleshooting procedure for 69 XX codes.
Active Indicator Clearing Procedure:
• Power down
• Manual
NOTE: Intermittent connections or lack of battery-direct power and ground connections may cause this and
other codes.
NOTE: The retarder accumulator solenoid (“H”) has a 30 Ohm coil. Since “H” solenoid is not mounted in
the sump, no relationship between temperature and resistance is required.
NOTE: Before troubleshooting, read Pages 6–17 and 6–18 of Section 6–5. Also, check battery and ECU input
voltages.
Main
Code
Subcode Meaning
44 12 Short-to-Ground A Solenoid Circuit
44 13 Short-to-Ground B Solenoid Circuit
44 14 Short-to-Ground C Solenoid Circuit
44 15 Short-to-Ground D Solenoid Circuit
44 16 Short-to-Ground E Solenoid Circuit
44 21 Short-to-Ground F Solenoid Circuit
44 22 Short-to-Ground G Solenoid Circuit
44 23 Short-to-Ground H Solenoid Circuit
44 24 Short-to-Ground J Solenoid Circuit
44 25 Short-to-Ground K Solenoid Circuit
44 26 Short-to-Ground N Solenoid Circuit
CODE 44 XX — SHORT-TO-GROUND IN SOLENOID CIRCUIT
(Figures 6–29, 6–30)
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