Retrieving Codes
- If use of an OBD-II type scan tool is not available, DTCs can be retrieved by changing MIL output from Mode 1 to Mode 2. Mode 1 is the normal malfunction warning mode. Mode 2 displays self-diagnostic results.NOTE: Before switching MIL to Mode 2, perform bulb check (key on engine off). If MIL is inoperative, check and repair as necessary.
- To switch MIL output from Mode 1 to Mode 2, locate the self-test harness connector. See Fig 1. Turn ignition on. Disconnect self-test harness connector and jump terminal No. 3 and 6 together. Disconnect jumper wire after being connected for at least 2 seconds. Reconnect connector. MIL should now be in Mode 2. When in Mode 2 with engine off, MIL should begin flashing codes.NOTE: DTCs retrieved by MIL may also be referred to as flash codes.
- The 4-digit DTCs (flash codes) are read as two 2-digit numbers. The first 2-digit number is indicated by a series of long flashes followed by a series of short flashes. E.g. 1 long flash followed by 2 short flashes indicates DTC 0102. See Fig 2. The DTCs retrieved by MIL are not numerically the same as DTCs retrieved from a scan tool.
- Write down DTCs and repair in order retrieved. To determine which circuit test to use, see DTC IDENTIFICATION table. After retrieving DTCs or performing a repair, clear DTCs from ECM memory. If no DTCs or Code 0505 (pass code) were retrieved, proceed to TESTS W/O CODES article.
ECM LOCATIONS
| Application | Location |
|---|---|
| Quest | Behind Glove Box |