General information
- Malfunction indicator lamp (MIL) will illuminate if certain faults are recorded.
- ECM operates in backup mode if sensors fail, to enable vehicle to be driven to repair shop.
- Trouble codes can be displayed by the MIL or by using a Scan Tool connected to the data link connector(s) (DLC).
Accessing
- Ensure ignition switched OFF.
- Access 16 pin data link connector (DLC) [1]
- Jump data link connector (DLC) terminal 1 and ground [2]
- Switch ignition ON .
- Count MIL flashes. Note trouble codes. Compare with trouble code table.
- Each trouble code consists of two groups [3] :
o Long flashes indicate the ‘tens’ of the trouble code [3] A.
o Short flashes indicate the ‘units’ of the trouble code [3] D.
o A short pause separates each trouble code group [3] C.
o A long pause separates each trouble code [3] E .
o For example: Trouble code 22 displayed [3]
- If MIL remains ON : Suspect faulty engine control module (ECM).
- If constant short flashes are displayed, no trouble code is stored.
- Trouble codes can also be displayed by using a Scan Tool connected to the data link connector(s) (DLC).
Erasing
NOTE: Disconnecting battery ground lead may cause driveability problems until the engine management system relearns basic values.- Ensure ignition switched OFF.
- Disconnect battery ground cable for at least 15 seconds.
- Reconnect battery ground lead.
- Repeat checking procedure to ensure no data remains in ECM fault memory.
- Trouble codes can also be erased by using a Scan Tool connected to the data link connector(s) (DLC ).
NOTE: Disconnecting battery ground lead may erase memory from electronic units such as radio.Trouble code identification
