Copyright © 1998 General Motors Corp. 5–3
OIL LEVEL SENSOR
WTEC II ELECTRONIC CONTROLS TROUBLESHOOTING MANUAL
c. Low Fluid Level — Indicated by a flashing red LED on the
R
(Reverse) pushbutton and a
tone. The number of times the tone sounds indicates the number of quarts of transmission fluid
which need to be added to produce an “
O K
” level. The
N
(Neutral) pushbutton red LED will
remain on during this display.
d. High Fluid Level — Indicated by a flashing red LED on the
D
(Drive) pushbutton and a tone.
The number of times the tone sounds indicates the number of quarts of transmission fluid
which need to be drained to produce an “
O K
” level. The
N
(Neutral) pushbutton red LED
will remain on during this check.
e. Invalid for Display — Indicated by flashing red LED in a repeated sequence from
R
(Reverse) down through the lowest
D
(Drive) range while the
N
(Neutral) red LED
remains constantly illuminated. A constant tone will sound until the fluid level mode is
exited. (Reasons for Invalid for Display are the same as those shown in Table 5–1 under
Cause of Code.)
f. To exit the fluid level display mode, press any pushbutton or deactivate the separate switch
provided by the vehicle manufacturer that was used to enter the fluid level display mode in
Step a.
Table 5–1. Invalid for Display Codes
CODE CAUSE OF CODE
00
00
XX
XX
**
**
— Settling time too short
55
55
00
00
— Engine speed (rpm) too low
55
55
99
99
— Engine speed (rpm) too high
66
66
55
55
— Neutral (N) must be selected
77
77
00
00
— Sump fluid temperature too low
77
77
99
99
— Sump fluid temperature too high
88
88
99
99
— Output shaft rotation
99
99
55
55
— Sensor failure**
* The zero represents “chasing segments” in the SELECT display and the X is
a number between 8 and 1 which appears in the MONITOR display during
the countdown period.
** Report sensor failure to a distributor or dealer in your area (check the
telephone directory for an Allison Transmission distributor or dealer
nearest you).
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