Description & Operation
A drive cycle is a pattern of driving in which the ECM will execute all OBD-II diagnostic monitors. A drive cycle can be used to cause a DTC to set if fault is present or to verify a DTC will not return after a repair has been done. The drive cycles consist of 3 different driving patterns. When a pattern is successfully completed it is called a "trip". Ensure pattern "A" is completed before attempting to perform patterns "B" and "C". Drive cycle trip status can be observed using OBD-II scan tool. Access DATA MONITOR menu selection and select TRIP SET from scan tool menu screen.
DTC IDENTIFICATION
| DTC | MIL DTC | Items Affected |
|---|---|---|
| P0100 | 0102 | Mass Air Flow Sensor Circuit |
| P0115 | 0103 | Engine Coolant Temp Sensor Circuit |
| P0120 | 0403 | Throttle Position Sensor Circuit |
| P0125 | 0908 | Engine Coolant Temp Sensor |
| P0130 | 0303 | Front O2 Sensor |
| P0130 | 0307 | Closed Loop Control - Right/Front HO2S |
| P0135 | 0901 | Right/Front HO2S - Heater Fault |
| P0136 | 0707 | Closed Loop Control - Right/Rear HO2S |
| P0170 | 0706 | Fuel Injection System - Control Fault |
| P0300 | 0701 | Multiple Cylinder Misfire |
| P0304 | 0605 | No. 4 Cyl. Misfire |
| P0325 (1) | 0304 | Knock Sensor Circuit |
| P0335 | 0802 | Crankshaft Position Sensor |
| P0340 | 0101 | Camshaft Position Sensor |
| P0400 | 0302 | EGR System Function |
| P0402 | 0306 | EGR Control Backpressure Transducer (EGRC - BPT) Valve |
| P0420 | 0702 | Catalyst Function - Right Bank On V6 |
| P0500 | 0104 | Vehicle Speed Sensor |
| P0505 | 0205 | Idle Air & Auxiliary Air Control Valve |
| P0605 | 0301 | Engine Control Module |
| P0705 | 1003 | (2) Park/Neutral Position Switch |
| P1110 | 0805 | Valve Timing Control (VTC) |
| P1320 | 0201 | Primary Ignition Signal |
| P1336 | 0905 | Crankshaft Position Sensor |
| P1400 | 1005 | EGR Control Solenoid Valve |
| P1401 | 0305 | EGR Temperature Sensor |
| P1550 | 0904 | Torque Converter Clutch Solenoid Valve |
| P1900 | 1308 | Cooling Fan/Overheat |
| (1) Freeze frame data will not be stored in the ECM for the knock sensor. The MIL will not light for a knock sensor malfunction. (2) For testing, see appropriate TRANSMISSION SERVICE & REPAIR article. | ||
| (1) | Freeze frame data will not be stored in the ECM for the knock sensor. The MIL will not light for a knock sensor malfunction. |
| (2) | For testing, see appropriate TRANSMISSION SERVICE & REPAIR article. |
DTC IDENTIFICATION
System Description
The ECM controls torque converter clutch solenoid valve to cancel the lock-up condition of A/T. When the solenoid valve is turned on, lock-up is cancelled. When the solenoid valve is turned off, A/T lock-up is operational.
Conditions for lock-up cancel
- Throttle valve is fully closed (idling or deceleration)
- Engine coolant temperature is below 60°C (140°F)
- Vehicle speed is less than 64 km/h (40 MPH)
- During high-load operation
| Diagnostic Trouble Code No. | Malfunction Is Detected When | Check Items (Possible Cause) |
|---|---|---|
| P1550 0904 | An Excessively Low Voltage From The Solenoid Is Sent To ECM Or A/T Torque Converter Slip Is Occurred In Lock-Up Condition. | Harness Or Connectors (The circuit is open or shorted.) Or Torque Converter Clutch Solenoid Valve Or A/T Hydraulic Control System |
TORQUE CONVERTER CLUTCH SOLENOID VALVE
See also:
• WIRING DIAGRAMS - 1.6L
• PIN VOLTAGE CHARTS - 1.6L