ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P0171 SYSTEM TOO LEAN BANK 1
Refer to DTC P0172 for diagnostic procedure. Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P0172 SYSTEM TOO RICH BANK 1">
1. OUTLINE OF DIAGNOSIS
Detect fuel system malfunction by the amount of main feedback control.
Diagnostic method
Fuel system is diagnosed by comparing the target air fuel ratio calculated by ECM with the actual air fuel ratio measured by sensor.
2. EXECUTION CONDITION
Secondary parameters | Execution condition |
Main feedback | In operation |
3. GENERAL DRIVING CYCLE
Perform the diagnosis continuously at idling or at a constant speed after warming up the engine.
4. DIAGNOSTIC METHOD
Compare the diagnostic value with the threshold value, and if a condition meeting the malfunction criteria listed below continues for 10 s ? 3 time(s) or more, judge that there is a fault in the fuel system.
Malfunction Criteria | Threshold Value |
Offset amount of main feedback compensation | ≥ Value from Map |
Amount of air g/s (oz/s) | 0 (0) | 3.2 (0.11) | 6.4 (0.23) | 9.6 (0.34) | 12.8 (0.45) | 16 (0.56) | 19.2 (0.68) |
Threshold Value | 1.33 | 1.33 | 1.33 | 1.33 | 1.33 | 1.33 | 1.33 |
Time needed for diagnosis: 10 s ? 3 time(s)
Malfunction indicator light illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
Temperature control
Type A
Turn the temperature control dial over a
range from the blue side (cool) to red side
(warm) to regulate the temperature of
airflow from the air outlets.
Type B, C and D
Turn the temperature control dial to set the
preferred interior temperature. With the
dial set to your preferred tem ...
Removal
BRAKE > Master CylinderREMOVALCAUTION:• Do not allow brake fluid to come in contact with the painted surface of the vehicle body. If it does, wash off with water and wipe away completely.• Prepare a container to catch grease or oil, etc. If any grease or oil spills, wipe it off and cl ...
Wiring diagram
POWER ASSISTED SYSTEM (POWER STEERING) (DIAGNOSTICS) > Control Module I/O SignalWIRING DIAGRAM(1)Battery(5)Engine control module (ECM)(9)Torque sensor (main & sub)(2)Ignition switch(6)Power steering control module(10)CAN communication(3)STEERING warning light (combination meter)(7)Motor(11)VD ...