DTC P050B Cold Start Ignition Timing Performance
DESCRIPTION
This monitor will run when the engine is started at -10 to 50C (14 to 122F) of the engine coolant temperature. The DTC will set after the engine idling for 13 seconds (2 trip detection logic).
The DTC is designed to monitor the idle air control at cold start. When the engine is started at lower than 50C (122F) of the engine coolant temperature, the ECM measures the accumulated mass air flow at the engine idling. If it does not reach the criteria within 10 seconds, the ECM interprets this as a malfunction.
The MIL is illuminated and a DTC is set when the malfunction is detected in consecutive driving cycles (2 trip detection logic).
The ETCS (Electrical Throttle Control System) controls the idle speed. The ETCS operates the throttle actuator to open and close the throttle valve, and adjusts the intake air amount to achieve the target idle speed.
NOTICE: When the negative battery terminal is disconnected during inspection or repairs, the ISC (Idle Speed Control) learned values are cleared. ISC learning is performed when the engine has been warmed up and idled for 5 minutes because this DTC cannot be set after the ISC learned values cleared.
MONITOR DESCRIPTION
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
INSPECTION PROCEDURE
HINT:
1 CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P050B)
Result
HINT: If any DTCs other than P050B are output, troubleshoot those DTCs first.
2 READ VALUE USING INTELLIGENT TESTER (FUEL TRIM)
HINT: Calculate the total fuel trim values to check the characteristic deviation of the mass air flow meter.
OK: Total of SHORT FT #1 and LONG FT #1 values is between -20 % and 20 %.
3 PERFORM ACTIVE TEST USING INTELLIGENT TESTER (OPERATE OCV)
OK
4 CHECK PCV HOSE CONNECTIONS
OK: PCV hose is connected correctly and is not damaged.
5 CHECK INTAKE SYSTEM
OK: No leakage from intake system.
6 CHECK AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY
OK: Air cleaner filter element is not excessively contaminated with dirt or oil.
7 REPLACE MASS AIR FLOW METER
8 CHECK AND REPAIR VVT SENSOR
9 REPAIR OR REPLACE PCV HOSE
10 REPAIR OR REPLACE INTAKE SYSTEM
11 REPLACE AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY
12 CHECK THROTTLE VALVE
OK: No deposits around throttle valve and throttle valve moves smoothly.
13 REPLACE ECM
14 REPAIR OR REPLACE THROTTLE BODY ASSEMBLY
15 CHECK WHETHER DTC OUTPUT RECURS (DTC P050B)
NOTICE: In this operation, the engine must be cold (the same level as the engine coolant temperature recorded in the freeze frame data).
OK: Stable fast idling.
OK: No DTC output.
END
Short to GND in Side Squib LH Circuit
DTC B0117/45 Short to GND in Side Squib LH Circuit
DESCRIPTION
The side squib LH circuit consists of the center airbag sensor assembly and
the front seat side airbag
assembly LH.
This circuit instructs the SRS to deploy when deployment conditions are met.
DTC B0117/45 is recorded when a s ...
On-vehicle inspection
1. CHECK POWER MIRROR SWITCH OPERATION
Remote control
The mirror adjust switch can control the adjustment
axis of the mirror surface.
Reverse-linked
This function tilts the mirror surface downward to
improve the visibility when driving in reverse,
provided that all the co ...
Removal
1. REMOVE REAR WHEEL
2. REMOVE REAR SHOCK ABSORBER CAP LH
(a) Remove the shock absorber head cover.
(b) Remove the shock absorber cap LH.
3. REMOVE SHOCK ABSORBER ASSEMBLY REAR LH
(a) Support the rear axle beam with a jack.
(b) Using a 6 mm hexagon wrench to hold the piston
rod, ...