MONITOR DESCRIPTION This monitor will run when the engine is started at an engine coolant temperature of -10 to 50°C (14 to 122°F). The DTC is stored after the engine idles for 13 seconds (2 trip detection logic). The DTC is designed to monitor the ignition timing at cold start. When the engine is started at an engine coolant temperature of less than 50°C (122°F), the ECM checks the ignition timing during engine idling. If the ignition timing advances beyond the specified level within 10 seconds, the ECM interprets this as a malfunction. The MIL is illuminated and a DTC is stored when the malfunction is detected in consecutive driving cycles (2 trip detection logic). NOTICE: The idle speed control learned values are cleared by performing a learned value reset. Idle speed control learning needs to be performed before this DTC can be stored. HINT: Idle speed control learning is performed when the engine is warmed up and has been idling for 5 minutes.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
CONFIRMATION DRIVING PATTERN HINT:
WIRING DIAGRAM Refer to DTC P010012. Click here CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits related to this system before performing the following procedure. HINT:
PROCEDURE
(a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Powertrain / Engine / Trouble Codes. (e) Read the DTCs. Powertrain > Engine > Trouble Codes
HINT: If any DTCs other than P050B00 are output, troubleshoot those DTCs first.
HINT: Calculate the total fuel trim values to check the characteristic deviation of the mass air flow meter sub-assembly. (a) Connect the Techstream to the DLC3. (b) Start the engine. (c) Turn the Techstream on. (d) Enter the following menus: Powertrain / Engine / Data List / Short FT B1S1, Long FT B1S1, Short FT B2S1 and Long FT B2S1. Powertrain > Engine > Data List
(e) Read the values displayed on the Techstream at engine idle. (f) Add together the Short FT B1S1 and Long FT B1S1 values, and the Short FT B2S1 and Long FT B2S1 values to obtain the total fuel trim. Standard:
(a) Check for foreign matter between the throttle valve and housing. If necessary, clean the throttle body with motor assembly. Also, check that the throttle valve moves smoothly. OK: Throttle valve is not contaminated with foreign matter and moves smoothly.
(a) Replace the throttle body with motor assembly. Click here HINT: Perform "Inspection After Repair" after replacing the throttle body with motor assembly. Click here
(a) Check the PCV hose connections. Click here OK: PCV valve and hose are connected correctly and are not damaged.
(a) Check the intake system for vacuum leaks. Click here OK: No leaks from intake system.
(a) Visually check that the air cleaner filter element sub-assembly is not excessively contaminated with dirt or oil. OK: The air cleaner filter element sub-assembly is not excessively contaminated with dirt or oil.
(a) Operate the VVT system through the Active Test, and check if the VVT system is operating normally. (1) Perform the Active Test, referring to DTC P001100 Procedure (VVT system for intake camshaft). Click here (2) Perform the Active Test, referring to DTC P001400 Procedure (VVT system for exhaust camshaft). Click here
(a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Powertrain / Engine / Data List / Engine Speed, Mass Air Flow Sensor and Coolant Temperature. Powertrain > Engine > Data List
(e) Allow the engine to idle until Coolant Temperature is 75°C (167°F) or higher. (f) Read Mass Air Flow Sensor while maintaining an engine speed of 3000 rpm. Standard:
(a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the Techstream on. (d) Clear the DTC. Powertrain > Engine > Clear DTCs(e) Turn the engine switch off and wait for at least 30 seconds.
NOTICE: In this operation, the engine must be cold (approximately the same as the engine coolant temperature recorded in the Freeze Frame Data). (a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature. Powertrain > Engine > Data List
(e) Check that the engine coolant temperature is between -10 and 50°C (14 and 122°F). (f) Start the engine and warm it up until the engine coolant temperature is the same as the engine coolant temperature in the Freeze Frame Data. (g) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. (h) Enter the following menus: Powertrain / Engine / Utility / All Readiness. Powertrain > Engine > Utility
(i) Input the DTC: P050B00. (j) Check the DTC judgment result.
(a) Check and repair the VVT system. HINT:
(a) Replace the air cleaner filter element sub-assembly.
(a) Repair or replace the intake system. HINT: Perform "Inspection After Repair" after repairing or replacing the intake system. Click here
(a) Repair or replace the PCV valve or hose.
(a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the Techstream on. (d) Clear the DTC. Powertrain > Engine > Clear DTCs(e) Turn the engine switch off and wait for at least 30 seconds.
NOTICE: In this operation, the engine must be cold (approximately the same as the engine coolant temperature recorded in the Freeze Frame Data). (a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature. Powertrain > Engine > Data List
(e) Check that the engine coolant temperature is between -10 and 50°C (14 and 122°F). (f) Start the engine and warm it up until the engine coolant temperature is the same as the engine coolant temperature in the Freeze Frame Data. (g) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. (h) Enter the following menus: Powertrain / Engine / Utility / All Readiness. Powertrain > Engine > Utility
(i) Input the DTC: P050B00. (j) Check the DTC judgment result.
(a) Check the connection and terminal contact pressure of connectors and wire harnesses between the mass air flow meter sub-assembly and ECM. Click here HINT: Repair any problems.
(a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the Techstream on. (d) Clear the DTC. Powertrain > Engine > Clear DTCs(e) Turn the engine switch off and wait for at least 30 seconds.
NOTICE: In this operation, the engine must be cold (approximately the same as the engine coolant temperature recorded in the Freeze Frame Data). (a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature. Powertrain > Engine > Data List
(e) Check that the engine coolant temperature is between -10 and 50°C (14 and 122°F). (f) Start the engine and warm it up until the engine coolant temperature is the same as the engine coolant temperature in the Freeze Frame Data. (g) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. (h) Enter the following menus: Powertrain / Engine / Utility / All Readiness. Powertrain > Engine > Utility
(i) Input the DTC: P050B00. (j) Check the DTC judgment result.
(a) Disconnect the mass air flow meter sub-assembly connector. (b) Disconnect the ECM connector. (c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
(a) Replace the mass air flow meter sub-assembly. Click here HINT:
(a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the Techstream on. (d) Clear the DTC. Powertrain > Engine > Clear DTCs(e) Turn the engine switch off and wait for at least 30 seconds.
NOTICE: In this operation, the engine must be cold (approximately the same as the engine coolant temperature recorded in the Freeze Frame Data). (a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature. Powertrain > Engine > Data List
(e) Check that the engine coolant temperature is between -10 and 50°C (14 and 122°F). (f) Start the engine and warm it up until the engine coolant temperature is the same as the engine coolant temperature in the Freeze Frame Data. (g) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. (h) Enter the following menus: Powertrain / Engine / Utility / All Readiness. Powertrain > Engine > Utility
(i) Input the DTC: P050B00. (j) Check the DTC judgment result.
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