{"id":10014,"date":"2022-03-10T20:30:52","date_gmt":"2022-03-10T20:30:52","guid":{"rendered":"https:\/\/www.hexorcism.com\/19BP\/sm2565569\/"},"modified":"2022-03-10T20:30:52","modified_gmt":"2022-03-10T20:30:52","slug":"sm2565569","status":"publish","type":"page","link":"https:\/\/www.hexorcism.com\/19BP\/sm2565569\/","title":{"rendered":"DTC P2251:00 [PCM (SKYACTIV-G (US))]"},"content":{"rendered":"
\n

DTC P2251:00 [PCM (SKYACTIV-G (US))]<\/h3>\n<\/div>\n

SM2565569<\/p>\n

<\/p>\n
\n
\n
\n

id0102t48513u0<\/p>\n

\n
\n
Note<\/div>\n<\/dd>\n
\n
\u2022 To determine the malfunctioning part, proceed with the diagnostics from “Function Inspection Using M-MDS”.<\/div>\n<\/dd>\n<\/dl>\n



\n<\/a><\/p>\n

Details On DTCs<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\n

Description<\/p>\n<\/th>\n

\n

Open circuit between A\/F sensor terminal D and PCM terminal 1S<\/p>\n<\/th>\n<\/tr>\n<\/thead>\n

\n
Detection condition<\/span><\/div>\n<\/td>\n
\n
Determination conditions<\/div>\n<\/td>\n
\n
\u2022 The following conditions are met:<\/div>\n
\n
\n
\u2015 A\/F sensor element impedance is specified value or more<\/div>\n
\u2015 A\/F sensor terminal F voltage (B+ terminal) is less than specified value or unstable.<\/div>\n<\/dd>\n<\/dl>\n<\/td>\n<\/tr>\n
\n
Preconditions<\/div>\n<\/td>\n
\n
\u2022 Battery voltage: 11\u201418 V<\/span> *1<\/sup><\/div>\n
\u2022 A\/F sensor is activated.<\/div>\n
\u2022 The following DTCs are not detected:<\/div>\n
\n
\n
\u2015 A\/F sensor terminal F voltage (B+ terminal) is less than specified value:<\/div>\n
\n
\n
\u2022 A\/F sensor heater: P0031:00 and P0032:00<\/div>\n<\/dd>\n<\/dl>\n
\u2015 A\/F sensor terminal F voltage (B+ terminal) is unstable:<\/div>\n
\n
\n
\u2022 Internal PCM malfunction: P064D:00<\/div>\n<\/dd>\n<\/dl>\n<\/dd>\n<\/dl>\n
*1<\/sup>: Standard can be verified by displaying PIDs using M-MDS<\/div>\n<\/td>\n<\/tr>\n
\n
Drive cycle<\/div>\n<\/td>\n
\n
\u2022 2<\/div>\n<\/td>\n<\/tr>\n
\n
Self test type<\/div>\n<\/td>\n
\n
\u2022 CMDTC self test, KOER self test<\/div>\n<\/td>\n<\/tr>\n
\n
Sensor used<\/div>\n<\/td>\n
\n
\u2022 A\/F sensor<\/div>\n<\/td>\n<\/tr>\n
\n
Fail-safe function<\/span><\/div>\n<\/td>\n
\n
\u2022 Not applicable<\/div>\n<\/td>\n<\/tr>\n
\n
Vehicle status when DTCs are output<\/span><\/div>\n<\/td>\n
\n
\u2022 Not applicable<\/div>\n<\/td>\n<\/tr>\n
\n
Possible cause<\/span><\/div>\n<\/td>\n
\n
\u2022 A\/F sensor connector or terminals malfunction<\/div>\n
\u2022 PCM connector or terminals malfunction<\/div>\n
\u2022 Open circuit in A\/F sensor signal circuit<\/div>\n
\u2022 A\/F sensor malfunction<\/div>\n
\u2022 PCM malfunction<\/div>\n<\/td>\n<\/tr>\n
<\/td>\n<\/tr>\n
<\/td>\n<\/tr>\n
<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n



\n<\/a><\/p>\n

Function Explanation (DTC Detection Outline)<\/p>\n

\u2022 If the PCM detects an open circuit in the wiring harness between A\/F sensor terminal D and PCM terminal 1S (COM wiring harness), it stores a DTC. In addition, when there is an open circuit in the wiring harness between A\/F sensor terminal D and PCM terminal 1S (COM wiring harness), the A\/F sensor terminal F (B+ terminal) becomes unstable. At this time, the PCM determines an open circuit in the wiring harness (COM wiring harness) between A\/F sensor terminal D and PCM terminal 1S and stores a DTC.<\/div>\n
\u2022 If the A\/F sensor does not activate, monitoring cannot occur because the A\/F sensor element has an insulation property which keeps it at a specific temperature range or less.<\/div>\n



\n<\/a><\/p>\n

Repeatability Verification Procedure<\/p>\n

1. Warm up the engine to allow the engine coolant temperature to reach 80 \u00b0C {176 \u00b0F} or more<\/span>.<\/div>\n
2. Start the engine and leave it idling for 1 min<\/span>.<\/p>\n
\n
\n
Note<\/div>\n<\/dd>\n
\n
\u2022 Match the engine coolant temperature in the recorded freeze frame data\/snapshot data, the vehicle speed, and engine speed values to the best extent possible while driving the vehicle.<\/div>\n<\/dd>\n<\/dl>\n<\/div>\n
3. Try to reproduce the malfunction by driving the vehicle for 5 min<\/span> based on the values in the freeze frame data\/snapshot data.<\/div>\n



\n<\/a><\/p>\n

PID Item\/Simulation Item Used In Diagnosis<\/p>\n

\n

PID\/DATA monitor item table<\/p>\n\n\n\n\n\n
\n

PIDs<\/p>\n<\/th>\n

\n

Reference<\/p>\n<\/th>\n<\/tr>\n<\/thead>\n

\n
A\/F_SEN_CUR<\/div>\n<\/td>\n
\n
(See PID\/DATA MONITOR TABLE [PCM (SKYACTIV-G (US))]<\/a>.)<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n



\n<\/a><\/p>\n

Function Inspection Using M-MDS<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\n

Step<\/p>\n<\/th>\n

\n

Inspection<\/p>\n<\/th>\n

\n

Results<\/p>\n<\/th>\n

\n

Action<\/p>\n<\/th>\n<\/tr>\n<\/thead>\n

\n
1<\/div>\n<\/td>\n
\n
PURPOSE: VERIFY RELATED REPAIR INFORMATION OR SERVICE INFORMATION AVAILABILITY<\/div>\n
\u2022 Verify related Service Bulletins, on-line repair information, or Service Information availability.<\/div>\n
\u2022 Is any related Information available?<\/div>\n<\/td>\n
\n
Yes<\/div>\n<\/td>\n
\n
Perform repair or diagnosis according to the available information.<\/div>\n
\u2022 If the vehicle is not repaired, go to the next step.<\/div>\n<\/td>\n<\/tr>\n
\n
No<\/div>\n<\/td>\n
\n
Go to the next step.<\/div>\n<\/td>\n<\/tr>\n
\n
2<\/div>\n<\/td>\n
\n
PURPOSE: RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION<\/div>\n
\u2022 Record the freeze frame data\/snapshot data and diagnostic monitoring test results (A\/F sensor, HO2S related).<\/p>\n
\n
\n
Note<\/div>\n<\/dd>\n
\n
\u2022 Recording can be facilitated using the screen capture function of the PC.<\/div>\n<\/dd>\n<\/dl>\n<\/div>\n<\/td>\n
\n
\u2014<\/div>\n<\/td>\n
\n
Go to the next step.<\/div>\n<\/td>\n<\/tr>\n
\n
3<\/div>\n<\/td>\n
\n
PURPOSE: INSPECT A\/F SENSOR CONNECTOR FOR MALFUNCTION<\/div>\n
\u2022 Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION<\/a>.)<\/div>\n
\u2022 Are the connector and terminal normal?<\/div>\n<\/td>\n
\n
Yes<\/div>\n<\/td>\n
\n
Go to the next step.<\/div>\n<\/td>\n<\/tr>\n
\n
No<\/div>\n<\/td>\n
\n
Repair or replace the malfunctioning location.<\/div>\n
Go to Troubleshooting Diagnostic Procedure to perform the repair completion verification.<\/div>\n<\/td>\n<\/tr>\n
\n
4<\/div>\n<\/td>\n
\n
PURPOSE: INSPECT PCM CONNECTOR FOR MALFUNCTION<\/div>\n
\u2022 Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION<\/a>.)<\/div>\n
\u2022 Are the connector and terminal normal?<\/div>\n<\/td>\n
\n
Yes<\/div>\n<\/td>\n
\n
Go to the next step.<\/div>\n<\/td>\n<\/tr>\n
\n
No<\/div>\n<\/td>\n
\n
Repair or replace the malfunctioning location.<\/div>\n
Go to Troubleshooting Diagnostic Procedure to perform the repair completion verification.<\/div>\n<\/td>\n<\/tr>\n
\n
5<\/div>\n<\/td>\n
\n
PURPOSE: INSPECT A\/F SENSOR SIGNAL CIRCUIT FOR OPEN CIRCUIT<\/div>\n
\u2022 Inspect the applicable circuit for open circuit. (See CIRCUIT INSPECTION<\/a>.)<\/div>\n
\u2022 Is the circuit normal?<\/div>\n<\/td>\n
\n
Yes<\/div>\n<\/td>\n
\n
Go to the next step.<\/div>\n<\/td>\n<\/tr>\n
\n
No<\/div>\n<\/td>\n
\n
Repair or replace the malfunctioning location.<\/div>\n
Go to Troubleshooting Diagnostic Procedure to perform the repair completion verification.<\/div>\n<\/td>\n<\/tr>\n
\n
6<\/div>\n<\/td>\n
\n
PURPOSE: DETERMINE INTEGRITY OF A\/F SENSOR<\/div>\n
\u2022 Start the engine and warm it up completely.<\/div>\n
\u2022 Access the A\/F_SEN_CUR PID using the M-MDS. (See PID\/DATA MONITOR INSPECTION<\/a>.)<\/div>\n
\u2022 Drive the vehicle under the following conditions.<\/p>\n
\n
\n
Warning<\/div>\n<\/dd>\n
\n
\n
\u2022 When the M-MDS is used to observe monitor system status while driving, be sure to have another technician with you, or record the data in the M-MDS using the PID\/DATA MONITOR AND RECORD capturing function and inspect later.<\/div>\n
\u2022 While performing this step, always operate the vehicle in a safe and lawful manner.<\/div>\n<\/div>\n<\/dd>\n<\/dl>\n<\/div>\n
\n
\n
\u2015 After increasing the engine speed to 3,000 rpm<\/span>, decelerate using engine braking.<\/div>\n<\/dd>\n<\/dl>\n
\u2022 Is the displayed PID value as follows?<\/div>\n
\n
\n
\u2015 A\/F_SEN_CUR: 0.25 mA or more<\/span><\/div>\n<\/dd>\n<\/dl>\n<\/td>\n
\n
Yes<\/div>\n<\/td>\n
\n
Go to Troubleshooting Diagnostic Procedure to perform the repair completion verification.<\/div>\n<\/td>\n<\/tr>\n
\n
No<\/div>\n<\/td>\n
\n
Go to the next step.<\/div>\n<\/td>\n<\/tr>\n
\n
7<\/div>\n<\/td>\n
\n
PURPOSE: VERIFY CONNECTOR CONNECTIONS<\/div>\n
\u2022 Access the A\/F_SEN_CUR PID using the M-MDS. (See PID\/DATA MONITOR INSPECTION<\/a>.)<\/div>\n
\u2022 Does the PID value fluctuate when the following connectors are shaken?<\/div>\n
\n
\n
\u2015 A\/F sensor<\/div>\n
\u2015 PCM<\/div>\n<\/dd>\n<\/dl>\n<\/td>\n
\n
Yes<\/div>\n<\/td>\n
\n
Repair or replace the applicable wiring harness or connector parts.<\/div>\n
Go to Troubleshooting Diagnostic Procedure to perform the repair completion verification.<\/div>\n<\/td>\n<\/tr>\n
\n
No<\/div>\n<\/td>\n
\n
Replace the A\/F sensor.<\/div>\n
(See AIR FUEL RATIO (A\/F) SENSOR REMOVAL\/INSTALLATION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n
(See AIR FUEL RATIO (A\/F) SENSOR REMOVAL\/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n
Go to Troubleshooting Diagnostic Procedure to perform the repair completion verification.<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n



\n<\/a><\/p>\n

Troubleshooting Diagnostic Procedure<\/p>\n

Intention of troubleshooting procedure<\/div>\n
\u2022 Repair completion verification<\/div>\n
\n
\n
\u2015 Verify that the primary malfunction is resolved and there are no other malfunctions.<\/div>\n<\/dd>\n<\/dl>\n

\n\n\n\n\n\n\n\n\n
\n

Step<\/p>\n<\/th>\n

\n

Inspection<\/p>\n<\/th>\n

\n

Results<\/p>\n<\/th>\n

\n

Action<\/p>\n<\/th>\n<\/tr>\n<\/thead>\n

\n
Repair completion verification 1<\/div>\n<\/td>\n
\n
PURPOSE: VERIFY THAT VEHICLE IS REPAIRED<\/div>\n
\u2022 Install\/connect the part removed\/disconnected during the troubleshooting procedure.<\/div>\n
\u2022 Clear the DTC recorded in the memory. (See CLEARING DTC<\/a>.)<\/div>\n
\u2022 Replicate the vehicle conditions at the time the DTC was detected using the following procedure.<\/div>\n
\n
\n
\u2015 Perform the KOER self test. (See DTC INSPECTION<\/a>.)<\/div>\n<\/dd>\n<\/dl>\n
\u2022 Perform the DTC inspection for the PCM. (See DTC INSPECTION<\/a>.)<\/div>\n
\u2022 Is the same Pending DTC present?<\/div>\n<\/td>\n
\n
Yes<\/div>\n<\/td>\n
\n
Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.<\/div>\n
(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(US)]<\/a>.)<\/div>\n
If the CAN communication is normal, perform the diagnosis from Step 1.<\/div>\n
\u2022 If the malfunction recurs, replace the PCM, then go to the next step. (See PCM REMOVAL\/INSTALLATION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.) (See PCM REMOVAL\/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n<\/td>\n<\/tr>\n
\n
No<\/div>\n<\/td>\n
\n
Go to the next step.<\/div>\n<\/td>\n<\/tr>\n
\n
Repair completion verification 2<\/div>\n<\/td>\n
\n
PURPOSE: VERIFY IF OTHER DTCs DISPLAYED<\/div>\n
\u2022 Perform the DTC inspection. (See DTC INSPECTION<\/a>.)<\/div>\n
\u2022 Are any other DTCs displayed?<\/div>\n<\/td>\n
\n
Yes<\/div>\n<\/td>\n
\n
Repair the malfunctioning location according to the applicable DTC troubleshooting.<\/div>\n<\/td>\n<\/tr>\n
\n
No<\/div>\n<\/td>\n
\n
DTC troubleshooting completed.<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n

<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

DTC P2251:00 [PCM (SKYACTIV-G (US))] SM2565569 id0102t48513u0 Note \u2022 To determine the malfunctioning part, proceed with the diagnostics from “Function Inspection Using M-MDS”. Details On DTCs Description Open circuit between A\/F sensor terminal D and PCM terminal 1S Detection condition Determination conditions \u2022 The following conditions are met: \u2015 A\/F sensor element impedance is specified value or more \u2015 A\/F sensor terminal F voltage (B+ terminal) is less than specified value or unstable. Preconditions \u2022 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-10014","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/pages\/10014","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/comments?post=10014"}],"version-history":[{"count":0,"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/pages\/10014\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/media?parent=10014"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}