O2 Sensor - MIL ON/DTC 13 Set
BULLETIN NO.: 94-T-41ISSUE DATE: October, 1994
GROUP/SEQ. NO.: Engine-09
CORPORATION NO.: 486501
SUBJECT:
Malfunction Indicator Lamp (SERVICE ENGINE SOON Telltale Lamp) On with PCM/EC DTC 13 Retained in PCM Memory (Repair Oxygen Sensor Wire)
MODELS AFFECTED:
1994 Saturns equipped with air conditioning (C60) or Retailer installed air conditioning prep kit (C66) built before, and including VIN RZ268961.
CONDITION:
The malfunction indicator lamp (SERVICE ENGINE SOON telltale lamp) is On with PCM/EC diagnostic trouble code (DTC) 13 retained in PCM memory.
CAUSE:
The wire from the oxygen sensor to the PCM may be incorrectly routed and could be cut by the engine cooling fan blades.
CORRECTION:
Inspect oxygen sensor wire, between rosebud and oxygen sensor, for possible damage. If wire is damaged, repair wire according to the following procedure. If wire is not damaged, refer to "Electronic Engine Controls Service Manual" for diagnostic procedures.
PROCEDURES
1. Remove "Rosebud" type retainer on right side of engine cooling fan that retains wire conduit containing wiring harness wire to oxygen sensor connector.
2. Disconnect oxygen sensor connector, and remove damaged wire with connector.
3. Remove insulation from the end of the new oxygen sensor connector kit lead wire. Recommended strip length is 9.5 mm (3/8 in.). Caution must be used to prevent cutting the wire strands.
^ P/N 21022282 - Oxygen Sensor Connector Kit - Federal Emission Vehicles
^ P/N 21023006 - Oxygen Sensor Connector Kit - California Emission Vehicles
4. Remove insulation from the end of the engine wiring harness wire. Recommended strip length is 9.5 mm (3/8 in.). Caution must be used to prevent cutting the wire strands.
5. Position stripped ends, from the oxygen sensor connector kit and the engine wiring harness wire, into Salmon colored crimp and seal sleeve (P/N 12089189), until wires hit the stop in the center of the crimp and seal sleeve.
6. Hand crimp using the approved crimping tool. Gently tug on wires to make sure they are secure before applying heat to them.
7. Apply heat using butane torch (included with special tool SA9138Z), heating to 175~C ( 347~F), working from the center to the ends, until glue flows around both edges of crimp and seal sleeve.
CAUTION:
DO NOT USE MATCH OR OPEN FLAME TO APPLY HEAT TO SEAL.
8. Route wire and install wire tie strap (P/N 21020792) or equivalent to cooling module as shown.
IMPORTANT:
Make sure to route wire so that wire cannot be drawn into the engine cooling fan, but allow enough slack for engine movement.
9. Clip off end of tie strap to ensure no interference with engine cooling fan blades.
10. Connect oxygen sensor connector.
11. Turn ignition On.
12. Using a portable diagnostic tool (or equivalent scan tool), clear all diagnostic trouble codes.
13. Apply service brake and parking brake, then start engine.
14. Using portable diagnostic tool (or equivalent scan tool), verify closed-loop engine operation.
Closed-Loop Criteria
^ ECT reading over 60~C (140~F).
^ Engine running at least one minute.
^ Bring engine off idle (TP sensor 7 to 10 percent) briefly to obtain closed-loop.
^ Oxygen sensor voltage should vary over 550 mV to under 350 mv
15. Once operating temperature and closed-loop engine operation have been obtained, run for two minutes while maintaining 1500 rpm. Verify DTC 13 does not reset.
16. If DTC 13 does reset, refer to the "Electronic Engine Controls Service Manual" for diagnostic procedures.
PARTS REQUIREMENTS:
CLAIM INFORMATION:
To receive credit for this repair during the warranty coverage period, submit a claim through the Saturn Dealer System as follows: