MIL ON, DTC #3A Set
NO: 18-22-97GROUP: Vehicle Performance
DATE: Jun. 13, 1997
SUBJECT:
MIL Illumination With Hex Code $3A
MODELS:
1995 - 1997 (FJ) Avenger/Sebring/Talon
NOTE:
THIS BULLETIN APPLIES TO VEHICLES WITH 2.0L NATURALLY ASPIRATED ENGINES.
SYMPTOM/CONDITION:
MIL illumination with DTC INTAKE AIR TEMP SENSOR VOLTAGE HIGH - Hex code $3A.
DIAGNOSIS:
Using the Mopar Diagnostic System (MDS) or the Diagnostic Scan Tool (DRB III) with the appropriate Diagnostic Procedures Manual, verify all engine systems are functioning as designed. If Diagnostic Trouble Codes (DTC's) are present, record them on the repair order and repair as necessary before proceeding further with this bulletin. If no DTC's other than the one listed above is present, check the intake air temperature connector and wiring as follows:
1. Locate the intake air temperature sensor and wiring on the back side of the intake manifold (Figure 1).
2. Inspect the wiring harness and connector for continuity (connector A-57 Talon/A-61 Avenger/Sebring). Wiggle the harness near the connector to fully check for broken wires. If the harness proves to be good, further investigation will be required. If the wires are broken, perform the Repair Procedure.
EQUIPMENT/PARTS REQUIRED:
1 CH6000 Scan Tool (DRB III)
1 CH7010 J1962 Cable/MMC Cable
1 MR368957 Connector, Intake Air Temperature Sensor 95/96 MY
1 MR368958 Connector, Intake Air Temperature Sensor 97 MY
1 04778570 Heat Shrink Tubing
1 NPN Rosin Core Solder
1 NPN Soldering Iron
1 NPN Electrical Tape
REPAIR PROCEDURE:
This repair involves replacing the intake air temperature sensor connector assembly.
1. Cut the wiring connector from the harness just behind the break.
2. Remove 1 inch of insulation from the harness wires and connector wires.
3. Slip a piece of heat shrink tubing p/n 04778570 over one side of each wire. Make sure the tubing is long enough to cover and seal each splice joint.
4. Spread the strands of wire on each end and push the ends together. Make sure to attach the BK/DG wire to terminal 2 (A) and the BR/DB wire to terminal 1(B) (Figure 2).
5. Twist the wires together on each splice and solder the connections with rosin core solder.
6. Center the heat shrink tubing over each splice and heat the joints with a heat gun until the tubing is tightly sealed and sealant flows from each end of the tubing.
7. Using electrical tape, wrap the wires from below the splice to the connector.
8. Route the harness under the vacuum hose and connect it to the intake air temperature sensor.
POLICY: Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation No: 08-94-TF-90 0.4 Hrs.
FAILURE CODE: ML - Malfunction Indicator Lamp On