ETB overheats due to constant isTpsError true/false/true/false jitter: this seems obvious enough to disable ETB at least on non running engine #4832

firmware/controllers/actuators/electronic_throttle.cpp

@@ -160,9 +160,10 @@ static percent_t directPwmValue = NAN;
 // this macro clamps both positive and negative percentages from about -100% to 100%
 #define ETB_PERCENT_TO_DUTY(x) (clampF(-ETB_DUTY_LIMIT, 0.01f * (x), ETB_DUTY_LIMIT))
 
-bool EtbController::init(etb_function_e function, DcMotor *motor, pid_s *pidParameters, const ValueProvider3D* pedalMap, bool initializeThrottles) {
+bool EtbController::init(etb_function_e function, DcMotor *motor, pid_s *pidParameters, const ValueProvider3D* pedalMap, bool hasPedal) {
 	if (function == ETB_None) {
 		// if not configured, don't init.
+		etbErrorCode = (int8_t)TpsState::NotConfigured;
 		return false;
 	}
 
@@ -172,12 +173,14 @@ bool EtbController::init(etb_function_e function, DcMotor *motor, pid_s *pidPara
 	// If we are a throttle, require redundant TPS sensor
 	if (function == ETB_Throttle1 || function == ETB_Throttle2) {
 		// We don't need to init throttles, so nothing to do here.
-		if (!initializeThrottles) {
+		if (!hasPedal) {
+			etbErrorCode = (int8_t)TpsState::PpsError;
 			return false;
 		}
 
 		// If no sensor is configured for this throttle, skip initialization.
 		if (!Sensor::hasSensor(functionToTpsSensorPrimary(function))) {
+			etbErrorCode = (int8_t)TpsState::TpsError;
 			return false;
 		}
 
@@ -188,6 +191,7 @@ bool EtbController::init(etb_function_e function, DcMotor *motor, pid_s *pidPara
 				Sensor::getSensorName(m_positionSensor)
 			);
 
+			etbErrorCode = (int8_t)TpsState::Redundancy;
 			return false;
 		}
 
@@ -196,7 +200,7 @@ bool EtbController::init(etb_function_e function, DcMotor *motor, pid_s *pidPara
 				OBD_TPS_Configuration,
 				"Use of electronic throttle requires accelerator pedal to be redundant."
 			);
-
+			etbErrorCode = (int8_t)TpsState::Redundancy;
 			return false;
 		}
 	}
@@ -536,7 +540,9 @@ void EtbController::setOutput(expected<percent_t> outputValue) {
 	}
 #endif
 
-	if (!m_motor) return;
+	if (!m_motor) {
+		return;
+	}
 
 	// If ETB is allowed, output is valid, and we aren't paused, output to motor.
 	if (getLimpManager()->allowElectronicThrottle()
@@ -567,12 +573,21 @@ void EtbController::update() {
 
 	if (!cisnan(directPwmValue)) {
 		m_motor->set(directPwmValue);
+		etbErrorCode = (int8_t)TpsState::Manual;
 		return;
 	}
 
-	if ((engineConfiguration->disableEtbWhenEngineStopped && !engine->triggerCentral.engineMovedRecently())
+	TpsState localReason = TpsState::None;
-	        || (etbInputErrorCounter > 50)
+	if (engineConfiguration->disableEtbWhenEngineStopped && !engine->triggerCentral.engineMovedRecently()) {
-	        || engine->engineState.lua.luaDisableEtb) {
+		localReason = TpsState::Setting;
+	} else if (etbInputErrorCounter > 50) {
+		localReason = TpsState::InputJitter;
+	} else if (engine->engineState.lua.luaDisableEtb) {
+		localReason = TpsState::Lua;
+	}
+
+	if (localReason != TpsState::None) {
+		etbErrorCode = (int8_t)localReason;
 		// If engine is stopped and so configured, skip the ETB update entirely
 		// This is quieter and pulls less power than leaving it on all the time
 		m_motor->disable();
@@ -956,10 +971,10 @@ static pid_s* getEtbPidForFunction(etb_function_e function) {
 }
 
 void doInitElectronicThrottle() {
-	bool shouldInitThrottles = Sensor::hasSensor(SensorType::AcceleratorPedalPrimary);
+	bool hasPedal = Sensor::hasSensor(SensorType::AcceleratorPedalPrimary);
 
 #if EFI_UNIT_TEST
-	printf("doInitElectronicThrottle %s\n", boolToString(shouldInitThrottles));
+	printf("doInitElectronicThrottle %s\n", boolToString(hasPedal));
 #endif // EFI_UNIT_TEST
 
 	engineConfiguration->etb1configured = engineConfiguration->etb2configured = false;
@@ -981,7 +996,7 @@ void doInitElectronicThrottle() {
 
 		auto pid = getEtbPidForFunction(func);
 
-		bool etbConfigured = controller->init(func, motor, pid, &pedal2tpsMap, shouldInitThrottles);
+		bool etbConfigured = controller->init(func, motor, pid, &pedal2tpsMap, hasPedal);
 		if (i == 0) {
 		    engineConfiguration->etb1configured = etbConfigured;
 		} else if (i == 1) {
@@ -991,7 +1006,7 @@ void doInitElectronicThrottle() {
 
 	if (!engineConfiguration->etb1configured && !engineConfiguration->etb2configured) {
 		// It's not valid to have a PPS without any ETBs - check that at least one ETB was enabled along with the pedal
-		if (shouldInitThrottles) {
+		if (hasPedal) {
 			firmwareError(OBD_PCM_Processor_Fault, "A pedal position sensor was configured, but no electronic throttles are configured.");
 		}
 

firmware/controllers/limp_manager.h

@@ -33,7 +33,10 @@ enum class TpsState : uint8_t {
 	PpsError, // 3
 	InputJitter,
 	PidJitter,
-	Lua
+	Lua, // 6
+	Manual,
+	NotConfigured,
+	Redundancy, // 9
 	// keep this list in sync with etbCutCodeList in rusefi.input!
 };
 

firmware/tunerstudio/rusefi.input

@@ -239,7 +239,7 @@ enable2ndByteCanID = false
 	fuelIgnCutCodeList = bits, U08, [0:7], "None", "fatal error", "setting disabled", "RPM limit", "fault RPM limit", "boost cut", "oil pressure", "stop requested", "ETB problem", "launch control", "max injector duty", "flood clear", "engine sync", "kickstart", "ign off"
 
 ; TpsState
-	etbCutCodeList = bits, U08, [0:7], "None", "engine off setting", "TPS error", "PPS error", "Input noise", "PID noise", "Lua"
+	etbCutCodeList = bits, U08, [0:7], "None", "engine off setting", "TPS error", "PPS error", "Input noise", "PID noise", "Lua", "Manual", "N/A", "Redundancy"
 
 [ConstantsExtensions]
 	; defaultValue is used to provide TunerStudio with a value to use in the case of