Fault finding Torque Errors institute CTOT
The below table gives you the individual voltages per torque setting
for CTOT PN: 7239060-503 and can be measured on pins 1-6 and 3-5
SAAB does not have this information in its manual. The CTOT is only calibrated on the 100% and 60% settings, but if you want to save fuel and engine runs once at Ground idle pop the CTOT up, but don't disconnect plug in the Multi meter in pins 1 & 2 ( DECU voltage, 3 & 4 (DECU) voltage 5.042 +/- 10mv then if the pilots have reported a particular torque error select the CTOT to that Toque error and measure the output voltage on pins 3 to5 and 1 to 6 compare to values below. remember these values are the ideal, each percentage value is for the selector and the mv is the mode APR higher value and ON lower value.
100% 4.532 4.244 98% 4.447 4.159 96% 4.362 4.074 94% 4.277 3.989 92% 4.192 3.904 90% 4.108 3.820 88% 4.023 3.735 86% 3.938 3.650 84% 3.853 3.565 82% 3.768 3.480 80% 3.683 3.395 78% 3.598 3.310 76% 3.513 3.225 74% 3.428 3.140 72% 3.343 3.055 70% 3.259 2.971 68% 3.174 2.886 66% 3.089 2.801 64% 3.004 2.716 62% 2.919 2.631 60% 2.834 2.546
Last edited by HSIFDITAS; 5th Dec 2017 at 00:44.