Diagnostic Procedure

WARNING: This page is about a different car, the 2004 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.

BTSI OUTPUT CIRCUIT SHORTED OR OPEN (4.7L EATX ONLY) - DIAGNOSTIC PROCEDURE

TEST	ACTION
1	NOTE: Diagnose and repair any TCM, PCM, CAB, Communication, or other MIC DTCs before proceeding with this test. Turn the ignition off.Disconnect the Instrument Cluster C1 harness connector.Disconnect the BTSI Solenoid harness connector.Measure the resistance between ground and the BTSI Output circuit.Is the resistance below 5.0 ohms? Yes --> Repair the BTSI Output circuit for a short to ground. Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 2
2	Turn the ignition off. Disconnect the Instrument Cluster C1 harness connector. Disconnect the BTSI Solenoid harness connector. Measure the resistance of the BTSI Output circuit. Is the resistance above 5.0 ohms? Yes --> Repair the BTSI Output circuit for an open. Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 3
3	Turn the ignition off. Disconnect the BTSI Solenoid harness connector. Disconnect the Brake Lamp Switch harness connector. Measure the resistance of the Brake Sense circuit between the BTSI Solenoid connector and the Brake Lamp Switch connector. Is the resistance above 5.0 ohms? Yes --> Using the wiring diagram/schematic as a guide, repair the Brake Sense circuit for an open. Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 4
4	Turn the ignition off. Disconnect the BTSI Solenoid harness connector. Measure the resistance of the BTSI Solenoid. Is the resistance above 1100 ohms? Yes --> Replace the BTSI Solenoid in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 5
5	Turn the ignition off. Disconnect the BTSI Solenoid harness connector. Measure the resistance between ground and pin 1 of the BTSI Solenoid. Measure the resistance between ground and pin 2 of the BTSI Solenoid. Is the resistance below 5.0 ohms for either terminal pin? Yes --> Replace the BTSI Solenoid in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 6
6	Turn the ignition off. Disconnect the Brake Lamp Switch harness connector. Measure the resistance between ground and the Brake Lamp Switch Ground circuit. Is the resistance above 5.0 ohms? Yes --> Repair the Brake Lamp Switch Ground circuit for an open. Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 7
7	Turn the ignition off. Disconnect the Brake Lamp Switch harness connector. Measure the resistance of the Brake Lamp Switch between pin 5 and pin 6. Is the resistance above 5.0 ohms? Yes --> Replace the Brake Lamp Switch in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 . No --> Replace the Instrument Cluster in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 .