Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information
998 8686 Replaced by 9511532 998 8686 Replaced By 9511532
Condition




Lock-up solenoid SL controls the transmission lock-up function. Solenoid SL operates when it receives battery voltage from the transmission control module (TCM) and is activated under different driving conditions depending on road speed, throttle position and the driving mode selected. Diagnostic trouble code (DTC) AT-331 is stored if the transmission control module (TCM) registers a short-circuit to supply voltage in the solenoid SL circuit when the solenoid should not be activated. Solenoid SL is then probably permanently activated.

Substitute value
The transmission control module (TCM) "Emergency mode I" program has been initiated.

Possible source
- Short-circuit to supply voltage in the signal cable

Fault symptom[s]
- The combined instrument panel warning lamp flashes. *)

Note! The Motronic 4.4 engine control module (ECM) stores a diagnostic trouble code (DTC) when the transmission sends a malfunction indicator lamp (MIL) request. Erase this diagnostic trouble code (DTC) in the Motronic engine control module (ECM) when the transmission fault has been repaired.

*) Applies only to USA/CDN 1997 model year-
- Since the solenoid is permanently activated the lock-up function is permanently engaged in 2nd, 3rd and 4th gears. Harsh shifting and engine braking function on 2nd, 3rd and 4th gears.