Automatic Transmission External Controls Pinpoint Test 1: Shift Interlock System Does Not Release/Lock Properly

AUTOMATIC TRANSMISSION EXTERNAL CONTROLS PINPOINT TEST 1: SHIFT INTERLOCK SYSTEM DOES NOT RELEASE/LOCK PROPERLY

PINPOINT TEST 1		SHIFT INTERLOCK SYSTEM DOES NOT RELEASE/LOCK PROPERLY
STEP	INSPECTION		ACTION
1	TEST CIRCUIT (R) WIRE FOR AN OPEN Key OFF. Disconnect brake shift interlock connector 0518-01. Key ON. Measure the voltage between the brake shift interlock, 0518-01 pin 3 (R) and ground. Is B+ present?	Yes	Go to step 2.
		No	Repair open circuit. Test the system for normal operation.
2	TEST CIRCUIT (B) WIRE FOR AN OPEN Key OFF. Measure the resistance between the brake shift interlock, 0518-01 pin 2 (B) and ground. Is the resistance 5 ohms or less?	Yes	Go to step 3.
		No	Repair open circuit. Test the system for normal operation.
3	TEST CIRCUIT (R/LG) FOR CONTINUITY TO GROUND Measure the resistance between the brake shift interlock, 0518-01 pin 1 (R/LG) and ground. Is the resistance 5 ohms or less?	Yes	Go to step 6.
		No	Go to step 4.
4	TEST CIRCUIT (B) FOR AN OPEN Disconnect brake pedal position (BPP) switch 0918-01. Measure the resistance between BPP switch, 0918-01 pin 1 (B) and ground. Is resistance 5 ohms or less?	Yes	Go to step 5.
		No	Repair open circuit. Test the system for normal operation.
5	TEST CIRCUIT (R/LG) FOR AN OPEN Measure the resistance between the BPP switch, 0918-01 pin 3 (R/LG) and the brake shift interlock, 0518-01 pin 1 circuit (R/LG). Is the resistance 5 ohms or less?	Yes	Replace the brake pedal position (BPP) switch. See BRAKE PEDAL POSITION (BPP) SWITCH REMOVAL/INSTALLATION . Test the system for normal operation.
		No	Repair open circuit. Test the system for normal operation.
6	TEST THE INPUT TO THE BRAKE SHIFT INTERLOCK While applying the brake pedal, measure the voltage at the brake shift interlock 0518-01 pin 1 (R/LG). Is B+ present?	Yes	Replace the shift lock actuator. See SHIFT LOCK ACTUATOR REMOVAL/INSTALLATION . Test the system for normal operation.
		No	Go to step 7.
7	TEST CIRCUIT (BR) FOR AN OPEN Disconnect brake pedal position (BPP) switch 0918-01. Measure the voltage between the BPP switch, 0918-01 pin 3 (BR) and ground. Is B+ present?	Yes	Replace the brake pedal position (BPP) switch. See BRAKE PEDAL POSITION (BPP) SWITCH REMOVAL/INSTALLATION . Test the system for normal operation.
		No	Repair open circuit. Test the system for normal operation.