W T E C I I I E L E C T R O N I C C O N T R O L S T R O U B L E S H O O T I N G M A N U A L
0011 00-65
Figure 5–8. TransID 1 Temperature Sensor Chart
Code 24 23:
1. Install temperature gauges for transmission temperature and engine water temperature. Drive the
vehicle. Verify that the code can be reproduced and verify the reading shown on the diagnostic
tool. Observe the gauges and check for hot fluid when the code is produced.
2. If the fluid is not hot when the code is produced, remove the transmission “T” harness connector
at the ECU and the transmission. Check the fluid temperature sensor wiring for opens, shorts,
and shorts-to-ground. Compare the resistance readings of the sensor and the actual temperature
Table 5–4. Transmission Operation as a Function of Temperature
Condition
Version 8 Software
°C
°F
Temperature sensor failed high (refer to code 33 23)
177
350
Hot fluid (code 2423) adaptive turned off; maximum range limited (not limited in
“emergency” calibration)
128
262
Output function “on” for sump over temp above this temperature
121
250
Output function “off” for sump over temp below this temperature
116
240
Cool/cold fluid; adaptive turned off
34
93
Turbine reasonableness and speed tie-up tests turned off
0
32
Medium cold fluid R, N, D allowed, 2nd range start (hold override upshifts only)
–7
19
All C3 Pressure Switch tests turned off
–32
–25
Temperature sensor failed low (refer to code 33 12)
–45
–49
CODE 24 XX — SUMP FLUID TEMPERATURE (Figure 5–7)
