In May 2015, the Yukon experienced another no-cranking, no-start, and instrument cluster failure and again arrived via tow truck at my clients shop. At 167,000 miles on the odometer and with no other symptoms, the shop (and rightly so, in my experience) installed a new ignition switch. ", if this is the correct display, you need to check any/all of the cooling system features and components. DTC P1629 Theft Deterrent System - Cranking Signal P1646 Evaporative Emission (EVAP) Vent Solenoid Control Circuit Fuel Economy, Hybrids & Electric, Car Repairs, Recalls And More. P1272 Accelerator Pedal Position Sensor 2 P1135 HO2S Lean Mean Bank 1 Sensor 1 P1136 HO2S Rich Mean Bank 1 Sensor 1 P1137 HO2S Bank 1 Sensor 2 Lean System or Low Voltage DTC P1544 A/C Refrigerant Condition Very Low P1583 Cruise Direction CircuitHigh Voltage P1345 Crankshaft Position (CKP)-Camshaft Position (CMP) Correlation DTC P1608 Serial Communication Problem With Device 8 DTC P1501 Theft Deterrent System The second complaint, which was a no-cranking, no-start, instrument cluster failure and a complete lack of trouble codes could be caused by the ECM simply dropping offline through a loss of power or ground. I can send you the diagnostic flow charts and connector end views for the code P1518, but you will need an advanced scan tool and a DMM to follow the steps. By now, I had collected a thick folder of case studies and diagnostic information on the Yukon and the P1518 DTC. For a few days everything was okay, but then it started shaking when I would turn off my truck and also when it would idle. P1141 HO2S Heater Control Circuit Bank 1 Sensor 2 I believe this model uses an Accelerator Pedal Position Sensor Assy. This serial data circuit is separate from any other serial data circuit on the vehicle. IlluminationP1701 Trans. If you disconnect the module or harness, the condition can no longer be duplicated. Accurate transmitting and receiving When the polarity of the transistors change, this DTC sets. P1118 Engine Coolant Temp. When the ignition switch is turned ON, the TAC module is powered-up before the If there are any nationally recognized parts stores near you (Auto Zone, Advance) call and ask if they lend scanners. Circuit Testing The control module illuminates the malfunction indicator lamp (MIL) when Monitor the diagnostic trouble code (DTC) Info option using the scan tool. DTC P1527 Transmission Range to Pressure Switch Correlation Fuel) Gas Mass Sensor Circuit Range/Performance P1376 Ignition Ground Circuit P1377 IC Cam Pulse To 4X Reference Pulse P1547 A/C System Performance Degraded P1548 A/C Recirculation Circuit P1554 Cruise Control Feedback Circuit P1555 Electronic Variable Orifice Output There is a small hose that sits under the Votec Box. DTC P1586 Cruise Control Brake Switch 2 Circuit An improperly torqued TAC module ground may be at fault. DTC P1525 Throttle Body Service Required The above condition is met for more than 1second. P1357 IC Output High/Pulse Detected when GND_Cyl. Intermittent High VoltageP1116 ECT Signal Unstable or Intermittent P1588 Cruise Control Clutch Control Circuit High Under certain conditions the control module commands the engine OFF. P1393 Wheel Speed Sensor 1 - G - Sensor Circuit High Voltage For a better experience, please enable JavaScript in your browser before proceeding. P1831 PC Solenoid Power Circuit - Low Voltage Your link has been automatically embedded. cruise, brake. DTC P1561 Cruise Vent Solenoid P1630 Theft Deterrent Learn Mode Active P1631 Theft Deterrent Start Enable Signal Not Correct The block ground, G105, is similarly difficult to access since it disappears under the engine and is boxed into a hole formed by the engine mount, timing cover and front differential. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. An inspection of the fuses may lead you to the circuit that is shorted to the TAC module ground circuit. This happened quite awhile ago but stopped now it seems to do it every day. My Aux Ports Front In Back Are Not Working My Wife Was Driving Back From Her Friends House A Couple Hours Away. Tapping on the ECM or TAC modules or warming them up wouldnt initiate a failure. P1860 TCC PWM Solenoid Circuit Electrical P1155 HO2S Lean Mean Bank 2 Sensor 1 P1156 HO2S Rich Mean Bank 2 Sensor 1 P1157 HO2S Bank 2 Sensor 2 Lean System or Low Voltage P1441 Evaporative Emission (EVAP) System Flow During Non-Purge Come join the discussion about performance, lift kits, wheels, tires, modifications, troubleshooting, maintenance, and more! The battery negative-to-block ground G105 not only grounds the starter and alternator, it must also ground G103 and G104, which makes it the most critical and most load-sensitive ground on the whole vehicle. Ckt. Test the TAC side of the fuse terminal for a short to ground with a DMM. P1531 A/C Low Side Temperature Sensor Fault P1518 CHEVROLET - Electronic Throttle Module to PCM Communication Condition/Concern: Customers may have a concern of lack of power and engine light on. P1570 Traction Control Active - Cruise Control Disabled P1518 CHEVROLET - Electronic Throttle Module to PCM Communication Condition/Concern: Customers may have a concern of lack of power and engine light on. DTC P1502 Theft Deterrent Fuel Enable Signal Not Received Well they looked at it and they replaced the coolant and housing (I am not exactly sure what this means I am copying this off the bill) and the did a fuel injection service and throttle body service. Wiring Repairs The throttle actuator control (TAC) module and the powertrain control module (PCM) communicate via a dedicated serial data circuit. fails. Test for voltage on the serial data circuit at the TAC module 16-way harness connector with a DMM. P1324 Crank RPM Too Low DTC P1690 ECM Loop Overrun Switch Circuit Low P1689 - No Communication Between ECM and Injection Pump Module P1690 - Fuel injection pump crankshaft position sensor Does Not Agree With ECM crankshaft position Sensor G103 is vulnerable to engine vibration and is a pattern failure. DTC P1670 Driver 4 DTC P1601 Serial Communication Problem With Device 1 So After Cleaning The Throttle Body Electrical Problem Gains in power and fuel economy have been largely realized due to direct injection and turbocharging. So, the heavily painted block surface forces G105 to ground through the corroded threads of the G105 retaining bolt. This message is displayed when the cooloing system temperature gets to hot and the engine will enter the coolant protection mode, this will keep the truck from further damage internally. Locating and repairing an individual condition may correct more than P1833 A/T Solenoids Power Circuit - Low Voltage Using a small battery-powered Dremel tool with a miniature wire brush, I carefully buffed the paint off the block and cleaned the retaining bolt threads. You are using an out of date browser. Buick, Cadillac, and former brands Oldsmobile, Pontiac, and Saturn. Test for poor connections at the PCM harness connector. DTCs set will almost always contain a P1518 and may contain any of the following (P1516, P2108, P0220, P0120, U0107). P1527 Transmission Range to Pressure Switch Correlation P1816 TFP Valve Position Sw. - Park/Neu. Inspect the TAC module power and ground circuits and the TAC module/PCM serial data circuits for intermittent connections. Servicing GM Autoride Rear Air Suspension. P1321 Electronic Ignition System Fault Line Lets take a different perspective on the ability of a single ground connection to influence engine performance. All of the voltage drops were within the time-honored 500 mV range for 12-volt circuits and 50 mV for 5-volt circuits. Thanks, I Am Only Able To Drive 20-30 Mph. The Fora platform includes forum software by XenForo. DTC CODES - P1500-P1700. DTC P1554 Cruise Control Feedback Circuit New cooling systems anticipate and influence changes in coolant temperature. Sens. Go to DTC P1573 PCM/EBTCM Serial Data Circuit The Ecm B Fuse Keeps Blowing And I Saw That Some One Had A Similar Problem Back In 2011. P1852 Brake Band Apply SolenoidLow Voltage p1518 1 Answer +1 vote answered Jan 28, 2017 by anonymous Best answer Ford used butterfly valves to change the path of the intake air during different running conditions on the motor. What happens after it runds good? P1159 HO2S Cross Counts Bank 2 Sensor 2 P1161 HO2S Heater Control Circuit Bank 2 Sensor 2 P1354 IC Output High/Pulse Detected when GND_Cyl. P1603 Loss of SDM Serial Data P1604 Loss of IPC Serial Data P1605 Loss of HVAC Serial Data P1606 Serial Communication Problem With Device 6 "Reduced Power" or "Limp Mode" which is designed to get the car where it is My Mother's Suv Is A 1500 Z71. Pictures would help, you can upload them using the add image button? Pasted as rich text. Low Voltage P1578 BBV Sensor Ckt. P1561 Cruise Vent Solenoid P1562 Cruise Vacuum Solenoid P1563 Cruise Vehicle Speed/Set Speed Difference Too High An improperly torqued TAC module ground may be at fault. The control module commands the TAC system to operate in the DTC P1634 Ignition 1 Switch Circuit Important:If the Driver Information Center is displaying Reduced Engine Power, go to step 6. P1164 HO2S Bank 2 Sensor 3 Rich or High Voltage Fortunately for us, the Yukon went into Reduced Power mode before leaving the parking lot on its first test drive. Drives fine on level ground, but when accelerate uphill, loses power. P1532 A/C Evaporator Temp. When my truck is wot some times it will shut down and says reduced engin power.I scand it and three fault codes came up .1. p1516 electronic throttle module tp 2. p1518 electronic throttle module to pcm communication 3. p2108 unknown fault. It is on the left hand side, on the bottom and in the front but right under the Vortec box. DTC P1641 Malfunction Indicator Lamp (MIL) Control Circuit DTC P1583 Cruise Direction Circuit High Voltage Engine Controls Connector End Views P1185 Engine Oil Temperature Circuit P1186 EOT Circuit Performance P1187 EOT Sensor Ckt. High Voltage P1627 A/D PerformanceP1628 ECT Pull-Up Resistor P1629 Theft Deterrent System - Cranking Signal P1791 Transmission Control Module Loop P1792 Transmission Control Module Reprogrammable Memory DTC P1655 EVAP Purge Solenoid Control Circuit Includes diagnostic enhancements for P1518." cruise, brake. DTC P1628 ECT Pull-Up Resistor DTC P1540 Air Conditioning (A/C) Refrigerant Overpressure - Air Conditioning (A/C) P1372 Crankshaft Position (CKP) Sensor A-B Correlation Becasue the original post appears to a electrical issue, not loss of power problem. Test for poor connections at the TAC module harness connector. DTC P1541 A/C High Side Over Temperature Ground connection G103, behind the passenger side cylinder head, was not even finger tight! An inspection of the fuses may lead you to the circuit that is shorted DTC P1504 Vehicle Speed Output Circuit. DTC P1520 Transmission Range Switch Circuit DTC P1642 Vehicle Speed Output Circuit Please help. Took the TB to autozone and got code P1518 Electronic throttle module to PCM Communication. Engine Controls Schematics, Connector End View Reference: Replace the TAC module. Does it fell like the code states," It's Lost Power?". P1576 BBV Sensor Ckt. DTC P1526 Minimum Throttle Position Not Learned DTCP1518 sets if the TAC module ignition feed circuit is shorted to a B+ supply circuit. Does the DMM indicate voltage within the specified values for both circuits? Most parts stores will do it for free; however, since you cannot drive it, that is a problem. P1528 GovernorP1529 Heated Windshield Request Problem P1530 Throttle Actuator Control (TAC) Module Internal Circuit Test for voltage at both throttle actuator motor control circuits with a DMM. P1370 IC 4X Reference Circuit Too Many Pulses The discrepancy between the voltage shown on the engine data stream and the indicated voltage on the voltmeter and BCM data stream was, at least to me, strongly indicative of a bad ECM. 8 P1569 Cruise Servo Stroke High While not in Cruise Low Voltage DTC, Description This third Diagnostic Dilemma was postponed until the school district began its fiscal year in July. Hope not. DTC P1519 Throttle Actuator Control (TAC) Module Internal Circuit The TAC module continuously test the integrity of this data. P1518 Renault Throttle Actuator Control Module Performance. And Then There;s A Note That Say Reduced Engine Power. Go to DTC P1500 Starter Signal Circuit P1864 Torque Converter Clutch Circuit P1868 Transmission Fluid Life P1870 Transmission Component Slipping P1871 Undefined Gear Ratio P1873 TCC Stator Temp. DTC P1692 Coolant Gage Circuit High Voltage Refer to. P1536 Engine Coolant Overtemperature - Air Conditioning (A/C) It Reset The Pcm. Obviously, a number of strands were broken, but when did the number of broken strands reach a critical point? No indicator lights came on, we pulled over to a rest area and let the car cool off started off again regained power for about five miles and then the same thing happened again a loss of power, at this time the service engine light came on. You need to get a scanner to use to check for codes. RespondingP1509 Idle Speed High - Idle Air Control (IAC) System Not In less severe cases, this corrosion may be unable to be seen or identified without the use of a magnifying glass. I did not clear the code, but when I went to restart the truck again, no CEL, no messages, and no reduced power - drove it 1/4 mile down the road, and it ran fine. DTC P1652 Powertrain Induced Chassis Pitch Output Circuit The title of the updated engine diagnostic calibration in TIS2000 is "New calibration to eliminate setting of P0120, P0220, or P1516 with the engine not running. We had put some oil in before we left on the trip because it was low I have only had this truck for about three months and before I chuck out any more cash I would like to get an idea of what to ask when I go to a repair person because I have been burned by mechanics before (I am a female). P1451 Barometric Press. DTC P1657 1-4 Upshift Solenoid Control Circuit ActiveP1580 Cruise Move Circuit Low Voltage P1581 Cruise Move Circuit High Voltage P1582 Cruise Direction Circuit Low Voltage DTC P1646 Evaporative Emission (EVAP) Vent Solenoid Control Circuit Does the scan tool indicate this DTC failed this ignition? . DTC P1696 Remote Keyless Entry Voltage High, Help Keep Us Free-Tip / Donation To the Mechanics. Low Voltage P1188 EOT Sensor Ckt. The second complaint, which was a no-cranking, no-start, instrument cluster failure and a complete lack of trouble codes could be caused by the ECM simply dropping offline through a loss of power or ground. The accelerator assembly, control unit above it on a bracket, and the assemble that sits on top of the throttle body. P1408 Intake Manifold Pressure Sensor Circuit I have a p1518 code ecm to tac module communication problem, checked wires wires at connections replaced tac module and no luck. Share. P1225 Injector Circuit Cylinder 2 Intermittent Circuit Testing High Voltage P1577 BBV Sensor Ckt. You may have a vacuum leak, get a can of spray Gumout, spray the vacuum lines and manifold area, when the idle changes, you have found the leak! P1300 Ignitor Circuit I do not believe it is the transmission because it shifts fine when your easy on the gas. And, we also know that accessory load across a fixed resistance can be a major variable. P1892 Throttle Position Sensor PWM Signal High Inspect the TAC module connectors for signs of water intrusion. P1568 Cruise Servo Stroke Greater than Commanded in Cruise If you have an account, sign in now to post with your account. var subject = 'OBD\u002DCodes.com\u0020Feedback'; P1647 Driver 1 Line 7P1650 Control Module Output B Circuit P1651 Fan 1 Relay Control Circuit P1652 Powertrain Induced Chassis Pitch Output Circuit P1818 TFP Valve Position Sw. - Drive Without Drive Ratio ModuleP1390 Wheel Speed Sensor 1 - G - Sensor Circuit In many late-model cars and SUVs, the base 1.4L engine is able to make 20% more power with 20% less displacement than bigger engines from a decade ago.
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