| Model | Year | Engine identification | System |
|---|---|---|---|
| Summit 1.5L | 1994 | 4G15 | Mitsubishi MPI |
General information
- Malfunction indicator lamp (MIL) will illuminate or flash 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 using an analogue voltmeter or Scan Tool connected to the data link connector(s) (DLC).
Accessing
- Ensure ignition switched OFF.
- Access 12 pin and 16 pin data link connectors (DLC) [2]
- Connect an analogue voltmeter between 12 pin data link connector (DLC) terminal 5 and 16 pin data link connector (DLC) terminal 4 or 5 [2].
- Switch ignition ON.
- Count voltmeter needle deflections. Note trouble codes. Compare with trouble code table.
- Each trouble code consists of two groups of one or more needle deflections [3]:
o Long needle deflections indicate the ‘tens’ of the trouble code [3] A.
o Short needle deflections 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 a constant deflection is displayed: Suspect engine control module (ECM).
- If constant short deflections 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).
Trouble code identification
| Flash code | Fault location | Probable cause |
| 11 | Heated oxygen sensor (H02S) 1, bank 1 circuit malfunction | Wiring, fuel pressure, injector(s), intake leak, H02S, ECM |
| 13 | Intake air temperature (IAT) sensor -circuit malfunction | Wiring, IAT sensor, ECM |
| 14 | Throttle position (TP) sensor -circuit malfunction | Wiring, TP sensor, CTP switch, ECM |
| 21 | Engine coolant temperature (EeT) sensor circuit malfunction | Wiring, EeT sensor, ECM |
| 22 | Crankshaft position (CKP) sensor -circuit malfunction | Wiring, CKP sensor, ECM |
| 23 | Camshaft pOSition (CMP) sensor -circuit malfunction | Wiring, CMP sensor, ECM |
| 24 | Vehicle speed sensor (VSS) -circuit malfunction | Wiring, VSS, ECM |
| 32 | Manifold absolute pressure (MAP) sensor circuit malfunction | Wiring, MAP sensor, ECM |
| 36 | Ignition timing adjustment | Wiring, ignition timing connector short to ground, ECM |
| 41 | Injectors -circuit malfunction | Wiring, injectors, ECM |
| 43 | Exhaust gas recirculation (EGR) system circuit malfunction | Wiring, hose leak/blockage, EGR valve, EGR temperature sensor, EGR solenoid, ECM |
| 55 | Idle air control (lAC) valve position sensor circuit malfunction | Wiring, lAC valve, lAC valve position sensor, ECM |
| 59 | Heated oxygen sensor (H02S) 2, bank 1 circuit malfunction | Wiring, H02S, ECM |