Without Scan Tool
IF A SCAN TOOL IS NOT AVAILABLE1. Cycle the ignition key On-Off-On-Off-On within 5 seconds.
2. Count the number of times the Malfunction Indicator Lamp (check engine lamp) on the instrument panel flashes on and off. The number of flashes represents the trouble code. There is a slight pause between the flashes representing the first and second digits of the code. Longer pauses (approx. 4 seconds) separate individual trouble codes.
3. Repair the malfunction while referring to the inspection chart for diagnostic trouble codes.
4. After disconnecting the battery cable from the battery (-) terminal for a few minutes, reconnect the cable.
5. Start the engine and run it at idle for about 15 minutes after the engine has warmed up.
MALFUNCTION INDICATOR LAMP
As a functional test, the Malfunction Indicator Lamp (MIL) illuminates at key-on before engine cranking. Whenever the Powertrain Control Module (PCM) sets a diagnostic trouble code that effects vehicle emissions, it illuminates the MIL. The PCM illuminates the MIL only for diagnostic trouble codes that effect vehicle emissions. The MIL remains on until the diagnostic trouble code is erased. The MIL either flashes or illuminates continuously when the PCM detects active engine misfire.
During active misfire, the PCM records the current engine operating conditions.
Once the check engine lamp is lit, any one of the following conditions will turn it off.
- When the PCM has found no malfunction after monitoring the power train three times (One time is from engine start to engine stop).
- A misfire of fuel abnormality when engine speed, coolant temperature, etc. are similar to those prevailing when the malfunction was first recorded, and the PCM has detected no malfunction.
Items Indicated by the Malfunction Indicator Lamp
NOTE: Following a detected malfunction of the Powertrain Control Module, the check engine lamp lights up the next time the engine is turned on if the malfunction is still detected. However, for items marked with an asterisk (*) in the table above, the check engine lamp goes on the first time a malfunction is detected.
CAUTION: If the check engine lamp is turned on by a malfunction of the PCM, the scan tool cannot communicate with the PCM, and the diagnostic trouble code cannot be read.