Trouble Code Diagnostics and Tests NOTE: Wiring schematic shows OEM engine applications only. For non-OEM engine wiring information, see APPLICATION ‘SPECIFICATIONS in Section 06, Group 210 of this manual. Analog Throttle Position Sensor ‘+ The analog throttle position sensor is a variable resistor (potentiometer) used to measure the position Of the throttle. The throttle input voltage normally varies between 1.0 and 4.0 volts depending on throttle postion. Analog throttle voltage at low idle will be approximately 1.0 volt and 4.0 vols at high idle. The ECU has the ability to lear different voltages for low and high idle, so the voltage range may change pet application. This code will set Level 12 ECU - T4 - Analog Throttle (A) input Low oomza>= com nOAOmzZz00 zlsiele[s| O|slelelele ‘+ The analog throttle (A) input voltage goes below the ‘sensor's low voltage spectication. The voltage is lower than what is physically possible for the throttle lever to achieve. = For OEM applications, the low analog throttle (A) input voltage specification is 0.3 volts. — For non-OEM applications, see APPLICATION ‘SPECIFICATIONS in Section 08, Group 210 of this manual for the low analog throttle (A) input votage specification. If this code sets, the following will occur: ‘+ I more than one throttle is available, the ECU will ignore the input from the analog throttle, and will use. the input values from another throttle. ‘+ Il the analog throttle is the only throttle or all ‘additional throttles are also faulted, the ECU will use ‘a default ‘limp-home" throttle value that will only ‘allow idle engine speed. Aewmsiomene seoroEcor (CTM331 (O9APRO2) 04-160-42 45 L& 68 | Level 12 Electronic Fuel System PN=202Trouble Code Diagnostics and Tests Level 12 ECU - T4 - Analog Throttle (A) Input Low - Continued Redoeniononns —1pa0<00I Level 12 ECU - T4 - Analog Throttle (A) Input Low Diagnostic Procedure @ Connection Check IMPORTANT: Do not force probes into connector terminals or damage will result. Uso JT07328 Connector Adapter Test Kit to make measurements in connectors. ‘This will ensure that terminal damage does not occur. NOTE: For witing and theory of operation, see T4 - ANALOG THROTTLE (A) INPUT LOW eupporting information. Pertorm a prolminay inspection ofthe ECU connector, the analog (A) thottla Connactor, and any connectors in batween them. Laok for diny, damaged, or pooty postioned terminals. No fauty connection(s): — coon Repair faulty connection. @ tntormittont Fault Tost NOTE: For witing and theory of operation, see T4 - ANALOG THROTTLE (A) INPUT LOW supporting information. 1. Connect the DST or SERVICE ADVISOR™. For instuctions on connecting 10 the DST or SERVICE ADVISO2™, see CONNECTING TO DIAGNOSTIC SCAN TOOL (OST) OR SERVICE ADVISOR earter in mis Group. 2. Ignton ON, engine OFF 3. Start he ECU communicaton sotware 4. Throtla (A) inthe ide position. 5. Using he DST or SERVICE ADVISOR™: ‘+ For OEM applications, read Analog Throte (A) Input Vettage (OEM) “= Fornon-OEM applications, read Analog Theate (A) Input Votage NOTE: For OEM application, tho low analog tote (A) input voltage specication ‘is 0.3V. For the low voltage specicaion an nor-OEM applications, see APPLICATION SPECIFICATIONS in Section 06, Group 210 ofthis manual 03 V or ess: coT0O ‘Above 0.3 V: coT0O SERVICE ADVISOR is a tasemark of Deere & Company CTMa31 (O9APRO2) 04-160-43_ 4512681 Level 12 Electronic Fuel System PN=203Trouble Code Diagnostics and Tests © Throttle Travel Voltage Test NOTE: For wting and theory of operation, seo T4- ANALOG THROTTLE (A) INPUT LOW supporting information. \Whle slowly eperatina analog throtle (A) through ts ful travel, use the DST oF ‘SERVICE ADVISOR forthe flowing: ‘+ For OEM applications read Analog Throttle (A) Input Voltage (OEM) 1 For non-OEM applicatone, read Analog Thatta (A) Input Voltage: NOTE: Fer OEM applications, the low analog tote (A) input votage specication fe (0.3. For the low voltage specification en nor-OEW appicatons, see APPLICATION SPECIFICATIONS in Section 06, Group 210 of tis manual. Goes below 0.3 V: Faulty analog throtle (A) sensor connector oR (pen in analog throttle (A) sensor ground circuit oR Faulty nag thot (A) Never goos above 0.3 V: Problem is interment. a othae codes are resert, soe INTERMITTENT FAULT DIAGNOSTICS eatler a this Group © Throttle Position Wiring Test NOTE: For wing and theory of opoation, 200 Té- ANALOG THROTTLE (A) INPUT. ‘LOW supporting information. 1. Ignition OFF 2. Disconnect analog thotle (A) sensor connector. 3. instal a jumper wire between the 5 V Supply terminal and the input terminal inthe ‘namess side of the sansor connecto. 4. Ignition ON, engine OFF 5. Using the DST or SERVICE ADVISOR: + For OEM appicatins, read Analog Throtle (A) Input Voltage (OEM) + FornonOEM applcations, read Analog Thre (A) Input Vltage NOTE: For OEM applications, the high analog trotte (A) input voltage specification '5 4.7V. Fer the high voltage specication an non-OEM applications, sae [APPLICATION SPECIFICATIONS in Section 08, Group 210 ol thie manual, Rolow 4:7 V: cord 47 V or greator: Faulty analog throtle (A) sensor connector oR Faulty analog throtle (A) (CTM331 (O9APRO2) 04-160-44 451.8 681 Level 12 Electronic Fuel Systom PN=204Trouble Code Diagnostics and Tests @ Throttle Position SV ‘Supply Test NOTE: For witing and theory of operation, see T4 - ANALOG THROTTLE (A) INPUT ‘LOW supporting information. 1. nition OFF 2. Remove jumper wie. 2. Ignition ON, engine OFF 4. Using a multimeter, measure the votage between the analog throttle (A) ground terminal and the 5 V Supply terminal inthe sensor harness comecto. Between 4.0 V and 6.0 v: ‘Open in analog tte input circuit ‘OR Shot to ground in anaog thvotle (A) input creut oR Feulty ECU connector oR Faulty ECU Below 4.0 V: ‘Open in analog tone (2) 8 V Supply circuit OR Sot to ground in analog thvotle (A) 5V Supply ‘ecu OR Faulty ECU connector OR Faulty ECU CTMa31 (O9APRO2) 04-160-45 4512681 Level 12 Electronic Fuel System PN=208