# Service bulletin 18\-063\-20 REV. A

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10183087
- Published by NHTSA: 2020\-11\-30
- Manufacturer's number: 18\-063\-20 REV. A
- Manufacturer's date: 2020\-10\-17
- NHTSA component: ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\)

## NHTSA's summary

Flash: Powertrain Control Module \(PCM\) Updates The previous release for this PCM software has been removed. Software updates to correct issues will be re\-released by the end of 4th quarter 2020.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10183087-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10183087-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system, Transmission and driveline, Automatic transmission, Transmission control module

## Vehicles listed

- 2019 JEEP CHEROKEE

## Recalls for the same vehicles and component

- [18V739000](/recalls/nhtsa/18V739000.md), 2018-10-19: POWER TRAIN:AUTOMATIC TRANSMISSION
- [18V492000](/recalls/nhtsa/18V492000.md), 2018-07-26: POWER TRAIN:AUTOMATIC TRANSMISSION

## Other bulletins for the same vehicles and component

- [1806523](/bulletins/10239969.md), 2023-07-31, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM. Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the PCM with the latest available software.
- [1805220](/bulletins/10221757.md), 2022-09-26, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM. Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the Powertrain Control Module \(PCM\) with the latest available software. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find that the following DTCs have been set:P04FC \- Crankcase Ventilation System Performance. P152F \- Engine Hood Switch 2 / Engine Hood Switch 1 Correlation\(EMEA only equipped with Gas Particulate Filter \(GPF\)\)\(DTC will set when driving above 72 kph \(45 mph\). P0456 \- EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification test \(SLVT\) to determine if a leak is present in the system. P050B \- Cold Start Ignition Timing Performance. P258B \- Electric Vacuum Pump Performance. C1252\-92 \- Vacuum Pump Control Circuit \- Performance Or Incorrect Operation. P2B95 \- Cold Start Injection Pulse Performance. P062A \- Fuel Pump Control Performance. P058C \- Battery Monitor Module Temperature Monitoring Performance. P0607 \- ECU Internal Performance. Injector performance faults for cylinders 2 \- 4 map to DTC for incorrect cylinders. In addition the following software enhancement are included:Software corrects an issue with the wrong cylinder identification if an injector circuit performance fault is set in the PCM:If any of the series of injector control circuit faults are set, please refer to the bullet\-pointed list below to determine which injector to address.For reference, the correct injector circuit performance faults are listed below:P02EE \- Cylinder 1 Injector Circuit Performance. P02EF \- Cylinder 2 Injector Circuit Performance. P02F0 \- Cylinder 3 Injector Circuit Performance. P02F1 \- Cylinder 4 Injector Circuit Performance. Customers may also experience the following condition:Audible noise from the Low Temperature Radiator \(LTR\) coolant pump, at low speeds. Abnormal noise from the radiator cooling fan. LTR runs too long after the engine is turned off.
- [18\-063\-20 REV. B](/bulletins/10184773.md), 2020-12-28, Service bulletin: ENGINE; ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the PCM with the latest available software. The customer may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes \(DTCs\): P20EE\-00 \- SCR NOx Catalyst Efficiency Below Threshold Bank 1 Catalyst 1. P24B2\-00 \- Particulate Matter Sensor Circuit Intermittent. Customers may also describe the following condition: Engine Start/Stop inoperative. Remote start inoperative \(South Korea vehicles only\). Incorrect vehicle speed reported by the cluster when the driver changes the speed units. Undesirable pedal response in 4\-LO mode. Selective Catalytic Reduction \(SCR\) system fault codes logged at higher vehicle speeds. Alternator load protection at idle. Check Engine Lamp or low battery indicator
- [18\-001\-20 REV. B](/bulletins/10184763.md), 2020-12-28, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Flash: Powertrain Control Module \(PCM\) Updates \- AN\-K4MCA\-18\-20201001 Refer to China Joint Venture \(JV\) released document AN\-K4MCA\-18\-20201001, for details on this service action.
- [S2018000012](/bulletins/10184702.md), 2020-12-28, Service bulletin: ELECTRICAL SYSTEM; ENGINE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Check engine lamp on. Fault code P0244\- TURBOCHARGER/SUPERCHARGER WASTEGATE SOLENOID "A" RANGE/PERFORMANCE is set in the Powertrain Control Module \(PCM a.k.a. ECM\) after the turbocharger assembly has been replaced.
- [18\-063\-20 REV. B](/bulletins/10184473.md), 2020-12-21, Service bulletin: ENGINE; ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); EQUIPMENT ADAPTIVE/MOBILITY. Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the PCM with the latest available software. The customer may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes \(DTCs\):P20EE\-00 \- SCR NOx Catalyst Efficiency Below Threshold Bank 1 Catalyst 1. P24B2\-00 \- Particulate Matter Sensor Circuit Intermittent. Customers may also describe the following condition:Engine Start/Stop inoperative. Remote start inoperative\(South Korea vehicles only\). Incorrect vehicle speed reported by the cluster when the driver changes the speed units. Undesirable pedal response in 4\-LO mode. Selective Catalytic Reduction \(SCR\) system fault codes logged at higher vehicle speeds. Alternator load protection at idle. Check Engine Lamp or low battery indicator
- [18\-001\-20 REV. B](/bulletins/10184463.md), 2020-12-21, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM. Flash: Powertrain Control Module \(PCM\) Updates \- AN\-K4MCA\-18\-20201001 Refer to China Joint Venture \(JV\) released document AN\-K4MCA\-18\-20201001, for details on this service action.
- [S2018000012](/bulletins/10184402.md), 2020-12-21, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER; ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Check engine lamp on. Fault code P0244\- TURBOCHARGER/SUPERCHARGER WASTEGATE SOLENOID "A" RANGE/PERFORMANCE is set in the Powertrain Control Module \(PCM a.k.a. ECM\) after the turbocharger assembly has been replaced.
- [18\-084\-20 REV. A](/bulletins/10183065.md), 2020-11-30, Service bulletin: SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES; ENGINE AND ENGINE COOLING; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM. Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more of the following DTCs:P2610 \- PCM Internal Engine Off Timer Performance. P06EF \- Engine Restart Performance. P0456 \- EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification Test \(SLVT\) to determine if a leak is present in the system. C1252 \- Vacuum Pump Control Circuit \- Performance Or Incorrect Operation. P06DA \- Engine Oil Pressure Control Circuit. P06DD \- Engine Oil Pressure Control Circuit Stuck Off. P06DE \- Engine Oil Pressure Control Circuit Stuck On. B25C7 \- Driver Door Ajar Switch 2 Circuit Low. B25C8 \- Driver Door Ajar Switch 2 Circuit High. B25C9 \- Driver Door Ajar Switch 2 Stuck Closed. B25CB \- Driver Door Ajar Switch 1/Driver Door Ajar Switch 2 Correlation. C10D0 \- Electronic Park Brake Module Deactivated. P0EA5 \- DC/DC Converter 2 Performance. P0EA6 \- DC/DC Converter 2 Over Temperature. P2299 \- Brake Pedal Position/Accelerator Pedal Position Incompatible. U0128 \- Lost Communication With Park Brake Control Module. U0151 \- Lost Communication With Occupant Restraint Controller. U0416 \- Implausible Data Received From Esp. U0418 \- Implausible Data Received From Brake System Control Module 1. U0599 \- Invalid Data Received From DC to DC Converter Control Module "A". U0299 \- LOC With DC\-DC Convertor 2. U1409 \- Implausible LF WSS Received. U140A \- Implausible RF WSS Received. U059A \- Invalid Data Received From DC to DC Converter Control Module "B". C0542 \- Brake Pressure Sensor 2 Circuit Low. C0543 \- Brake Pressure Sensor 2 Circuit High. P258A \- Electric Vacuum Pump Circuit \(turn MIL off, switch to 1 trip fault\). P0616 \- Starter Control Circuit Low. P0617 \- Starter Control Circuit High. P0607 \- ECU Internal Performance. P3032 \- Barometric Pressure Sensor Performance
- [18\-001\-20 REV. A](/bulletins/10181623.md), 2020-10-26, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Flash: Powertrain Control Module \(PCM\) Updates \- AN\-K4MCA\-18\-20200908 Refer to China Joint Venture \(JV\) released document AN\-K4MCA\-18\-20200908, for details on this service action.

JSON: [/v1/bulletins/10183087](/v1/bulletins/10183087)

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