General information
- Engine control module (ECM) incorporates self-diagnosis function.
- 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 workshop.
- Trouble codes can be accessed with suitable code reader or displayed with the malfunction indicator lamp (MIL).
Accessing
- Ensure ignition switched OFF.
- Jump data link connector (DLC) terminals 1 and 3 as follows:
o Stylus- [1]
o Trooper – [2]
o Rodeo- [3]
- Switch ignition ON. Do NOT start engine.
- MIL should flash.
o Long flashes indicate the ‘tens’ of the trouble code [4] [A].
o Short flashes indicate the ‘units’ of the trouble code [4] [C].
o A short pause separates each flash [4] [B].
o A long pause separates each trouble code [4] [D].
o For example: Trouble code 12 displayed [4].
- Trouble code 12 will be displayed 3 times.
- Each trouble code will then be displayed 3 times.
- If no trouble codes are stored, code 12 will continue to be displayed.
- Count MIL flashes and compare with trouble code table.
- Switch ignition OFF.
- Remove jump lead.
Erasing
- Ensure ignition switched OFF.
- Disconnect engine control module (ECM) harness multi-plugs for 30 seconds.
- Reconnect multi-plugs.
- Repeat checking procedure to ensure no data remains in ECM fault memory.
- Engine control module (ECM) location:
o Stylus-[5]
o Trooper- [6]
o Rodeo- [7]
Trouble code identification
