MUT Requests

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The following table attempts to collect the requests that are query-able via the MUT-III protocol on stock vehicles. Not all entries will apply to all Mitsubishi vehicles. Formulas are expressed in a format compatible with EvoScan.

Please Note:

  • "Calculated" formulas (sometimes referred to as "math channels") are intentionally not listed here, nor are common modifications to the MUT table.
  • As we understand it, MUTs are only used for logging purposes. Changing a MUT value should have no effect on internal ECU calculations.
  • Many of these were dreived from Acamus' list here.

Only request IDs 00 through BF are valid MUT requests. IDs higher than BF are actually MUT Commands, which control actuators for various functions driven by the ECU: solenoids, pumps, etc.


ID1 ID2 Short Name Description Units Formula Comment
04 TimingAdv Timing Advance Interpolated degrees x-20
06 TimingAdv Timing Advance Scaled degrees x-20
06 TimingAdv Timing Advance degrees x-20
07 CoolantTemp Coolant Temp F x*1.8+32
0C LTFTLo Fuel Trim Low (LTFT) % (x-128)/5
0D LTFTMid Fuel Trim Mid (LTFT) % (x-128)/5
0E LTFTHigh Fuel Trim High (LTFT) % (x-128)/5
0F STFT Oxygen Feedback Trim (STFT) % (x-128)/5
10 CoolantTempScaled Coolant Temp Scaled F 1.8*x-40
11 MAFAirTempScaled MAF Air Temp Scaled F 1.8*x-40
12 EGRTemp EGR Temperature F -2.7*x + 597.7
13 O2Sensor Front Oxygen Sensor V 0.01952*x
14 Battery Battery Level V 0.07333*x
15 Baro Barometer kPa 0.49*x
16 ISCSteps ISC Steps steps x
16 ISC_Position% ISC Position % % 100*x/120 percentage ISCV is open or closed
17 TPS Throttle Position % x*100/255
18 Open Loop Bit Array
19 Startup Check Bits
1A AirFlow Air Flow - (TPS Idle Adder ?) Hz 6.25*x
1A TPS Idle Adder
1C Load ECULoad load 5*x/8
1D AccelEnrich Acceleration Enrichment - (Manifold_Absolute_Pressure_Mean ?) airflow/rev 200*x/255
1F PrevLoad ECU Load Previous load 5*x/8
20 RPM_Idle_Scaled Engine RPM Idle Scaled RPM 31.25*x
21 RPM Engine RPM RPM 31.25*x
22 Idle Related Value (unknown)
24 TargetIdleRPM Target Idle RPM RPM 7.8*x
25 ISCV_Value Idle Stepper Value count x
26 KnockSum Knock Sum count x
27 OctaneFlag Octane Level % 100*x/255
29 2A InjPulseWidth Injector Pulse Width ms x/1000
2C AirVol Air Volume x
2D Ignition Battery Trim
2E Vehicle speed Frequency Hz
2F Speed Speed MPH 1.2427424*x
30 Knock Knock Voltage V 0.0195*x
31 VE Volumetric Efficiency V 0.0195*x
32 AFRMAP Air/Fuel Ratio (Map reference) AFR (14.7*128)/x
33 Corr_TimingAdv Corrected Timing Advance degrees x-20
34 MAP Index
35 Limp Home Fuel TPS Based
36 Active Fault Count Count
37 Stored Fault Count Count
38 MAP Boost (MDP) PSI 0.19348*x
39 Fuel Tank Pressure PSI
3A UnscaledAirTemp Unscaled Air Temperature F x*1.8+32
3B Masked Map Index
3C O2Sensor2 Rear Oxygen Sensor #1 V 0.01952*x
3D Front Oxygen Sensor #2 V 0.01952*x
3E Rear Oxygen Sensor #2 V 0.01952*x
3F Short Term Fuel Feedback Trim O2 Map Index
40 Stored Faults Lo
41 Stored Faults Hi
42 Stored Faults Lo 1
43 Stored Faults Hi 1
44 Stored Faults Lo 2
45 Stored Faults Hi 2
47 Active Faults Lo
48 Active Faults Hi
49 ACRelaySw Air Conditioning Relay On/Off x bit 4
4A PurgeDuty Purge Solenoid Duty Cycle % x*100/255
4C Fuel Trim Low Bank 2
4D Fuel Trim Mid Bank 2
4E Fuel Trim High Bank 2
4F Oxygen Feedback Trim Bank 2
50 LTFTCurrent Long Fuel Trim Bank 1
51 Long Fuel Trim Bank 2
52 Rear Long Fuel Trim Bank 1
53 Rear Long Fuel Trim Bank 2
54 AccelEnrichTPS Acceleration Enrichment (increasing TPS) % x*100/255
55 DecelLeanTPS Deceleration Enleanment (decreasing TPS) % x*100/255
56 AccelLoadChg Acceleration Load Change % x*100/255 Slope,Gradient,Derivative of load vs time.
57 DecelLoadChg Deceleration Load Change % x*100/255 Slope,Gradient,Derivative of load vs time.
58 AFR Ct Adder
5B Rear O2 Voltage
5C ADC Rear O2 Voltage
60 Rear O2 Trim - Low
61 Rear O2 Trim - Mid
62 Rear O2 Trim - High
63 Rear O2 Feedback Trim
6A knock_adc knock adc processed count x
6B knock_base knock base count x
6C knock_var knock var (AKA Knock Sum Addition) count x
6D knock_change knock change count x
6E knock_dynamics knock dynamics count x
6F knock_flag knock flag (AKA Knock Acceleration) count x
70 Array of Serial Receive Data Register 2 RDR 2 Values
71 Sensor Error
72 Knock Present
73 Throttle Position Delta 1
74 Throttle Position Delta 2
76 ISCV % Demand ISCV % Demand (Columns) % 100*x/255
79 InjectorLatency Injector Latency ms x
7A Continuous Monitor Completion Status 1
7B Continuous Monitor Completion Status 2
7C Continuous Monitor Completion Status 3
7D Non Continuous Monitor Completion Status OBD
7E Continuous Monitor Completion Status Low 4
7F Continuous Monitor Completion Status High 4
80 81 ECU ID Type
82 ECU ID Version
83 ADC Channel F
84 ThermoFanDuty Thermo Fan Dutycycle % ???
85 EgrDuty EGR Dutycycle % x/1.28
86 WGDC Wastegate Duty Cycle % x/2
87 FuelTemperature Fuel Temperature F ????
88 FuelLevel Fuel Level ??? ???
89 ADC Channel 8 2
8A LoadError Load Error - (Throttle Position Corrected ?) load 0.15625*x-20
8B WGDCCorr WGDC Correction % 0.5*x-64
8E Solenoid Duty %
90 Timer Status Register 9 TSR9
9 Timer Status Register 9 TSR9 Scaled
9 Timer Status Register 9 TSR9 Scaled Checked
9 Fadout Timer Value
96 MAF_ADC RAW MAF ADC value
9A ACClutch AC clutch On/Off x bit 1
9B Output Pins
A2 CrankPulse Crankshaft sensor pulse On/Off x bit 1
A2 MafPulse MAF sensor pulse On/Off x bit 2
A2 CamPulse Camshaft sensor pulse On/Off x bit 4
A8 ATInShaftPulse Input shaft speed pulse (A/T) On/Off x bit 1
A8 ATOutShaftPulse Output shaft speed pulse (A/T) On/Off x bit 2
A8 ATGearL Gear: Low (A/T) On/Off x bit 32
A8 ATGear2 Gear: 2 (A/T) On/Off x bit 64
A8 ATGear3 Gear: 3 (A/T) On/Off x bit 128
A9 O2HeaterFrontLeft Front O2 heater bank 1 (left) On/Off x bit 16
A9 O2HeaterRearLeft Rear O2 heater bank 1 (left) On/Off x bit 32
A9 O2HeaterFrontRight Front O2 heater bank 2 (right) On/Off x bit 64
A9 O2HeaterRearRight Rear O2 heater bank 2 (right) On/Off x bit 128
AA Braking Brakes Pressed On/Off x bit 16
B3 ATGearNeutral Gear: Neutral (A/T) On/Off x bit 1
B3 ATGearDrive Gear: Drive (A/T) On/Off x bit 2
B4 ATGearPark Gear: Park (A/T) On/Off x bit 64
B4 ATGearRev Gear: Reverse (A/T) On/Off x bit 128
B7 O2HeaterBrokenFrRt front O2 heater circuit open (broken): bank 2 (right) Off/On x bit 8
B8 O2HeaterBrokenFrLt front O2 heater circuit open (broken): bank 1 (left) Off/On x bit 8
B8 NewACSwitch Air Conditioning Switch (Mattjin) Off/On x bit 1
B8 PowerSteering Power Steering On/Off x bit 4
B9 O2HeaterBrokenRearRt rear O2 heater circuit open (broken): bank 2 (right) Off/On x bit 8
BA O2HeaterBrokenRearLt rear O2 heater circuit open (broken): bank 1 (left) Off/On x bit 8