DELPHI EFI Electrical System Crankshaft Position Sensor Electrical System A sealed, nonserviceable assembly. If Fault Code diagnosis indicates a problem within this area, test and correct as follows. 1. Check mounting and air gap of sensor. It must be 0.200.70 mm (0.0080.027 in.). 2. Inspect wiring and connections for damage or problems. 3. Make sure engine has resistor type spark plugs. 4. Disconnect Black connector from ECU. 5. Connect an ohmmeter between #4 and #13 pin WHUPLQDOV$UHVLVWDQFHYDOXHRIџDWURRP temperature (20°C, 68°F) should be obtained. If resistance is correct, check mounting, air gap, А\ZKHHOWHHWKGDPDJHUXQRXWHWFDQGA\ZKHHO key. 6.
Disconnect crankshaft position sensor connector from wiring harness. Test resistance between WHUPLQDOV$UHDGLQJRIџVKRXOGDJDLQEH obtained. a. If resistance is incorrect, remove screws securing sensor to mounting bracket and replace sensor. b. If resistance in step 5 was incorrect, but resistance of sensor alone was correct, test wire harness circuits between sensor connector terminals and corresponding pin terminals (#4 and #13) in main connector. Correct any observed problem, reconnect sensor, and perform step 5 again. 7. When fault is corrected and engine starts, clear fault codes following ECU Reset procedure. b. Hold throttle closed and check resistance. It VKRXOGEHџ 4.
Leave leads connected to pin terminals as described in step 3. Rotate throttle shaft slowly to full throttle position. Monitor dial during rotation for indication of any momentary short or open circuits. Note resistance at full throttle position. It should be џZLWKRXWDVWRSSLQRUџ with a stop pin. 5. Disconnect main wiring harness connector from TPS, leaving TPS assembled to throttle body.
Refer to Resistance Table and perform resistance checks indicated between terminals in TPS switch, with WKURWWOHLQSRVLWLRQVVSHFLїHG If resistance values in steps 3, 4, and 5 are within VSHFLїFDWLRQVJRWRVWHS ,IUHVLVWDQFHYDOXHVDUHQRWZLWKLQVSHFLїFDWLRQVRUD momentary short or open circuit was detected during rotation (step 4), TPS needs to be replaced, go to step 7. 6. Check TPS circuits (input, ground) between TPS plug and main harness connector for continuity, damage, etc. Input pin is 12 and ground is pin 10. a. Repair or replace as required. b. Turn idle speed screw back in to its original setting. c. Reconnect connector plugs, start engine and retest system operation. 7.
Remove two mounting screws from TPS. Save screws for reuse. Remove and discard faulty TPS. Install replacement TPS and secure with original mounting screws. a. Reconnect Black and TPS connector plugs. b. Perform TPS Learn Procedure integrating new sensor to ECU. Throttle Position Sensor (TPS) Resistance Table Engine (Oil) Temperature Sensor A sealed, nonserviceable assembly. A faulty sensor must be replaced. If a blink code indicates a problem with temperature sensor, it can be tested as follows: 1. Remove temperature sensor from breather cover and cap or block sensor hole. 2. Wipe sensor clean and allow it to reach room temperature (25°C, 77°F). 3. Unplug Black connector from ECU. 4.
With sensor still connected, check temperature sensor circuit resistance between Black pin 10 and WHUPLQDOV9DOXHVKRXOGEHџ 5. Unplug sensor from wire harness and check sensor resistance separately across two pins. Resistance YDOXHVKRXOGDJDLQEHџ D ,IUHVLVWDQFHLVRXWRIVSHFLїFDWLRQVUHSODFH temperature sensor. E ,ILWLVZLWKLQVSHFLїFDWLRQVSURFHHGWR6WHS TPS is a sealed, nonserviceable assembly. If diagnosis indicates a bad sensor, complete replacement is necessary. If a blink code indicates a problem with TPS, it can be tested as follows: 1. Counting number of turns, back out idle speed adjusting screw (counterclockwise) until throttle plates can be closed completely.
Write this number down for reference later. 2. Disconnect Black connector from ECU, but leave TPS mounted to throttle body. 3. a. Use an ohmmeter and connect red (positive) ohmmeter lead to Black pin 12 terminal and black (negative) ohmmeter lead to Black pin 10 terminal to test. 31 24 690 01 Rev. D KohlerEngines.com Throttle Position Between Terminal Resistance 9DOXH Continuity Closed A & C 14001800 Yes Full with Stop Pin A & C 32004100 Yes Full without Stop Pin A & C 46005200 Yes Any A & B 30007000 Yes