Checking wiring and connectors

Fig 1: Identifying Ignition OFF

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Ignition off
Check the throttle position (TP) sensor connector. Check for intermittent contact resistance and oxidation according to Contact resistance and oxidation . Check for loose connections according to Loose connections (terminals) . In particular, check for any damage
Check the cable between throttle position (TP) sensor terminal #C and control module terminal #43. Check the cable between throttle position (TP) sensor terminal #B and control module terminal #78. Check for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults . Check the cable between throttle position (TP) sensor terminal #A and control module terminal #77. Check for an intermittent open-circuit according to Open-circuit, intermittent faults
Remedy as necessary.
Other information:
- To connect the breakout box, see Connecting the breakout box. EMS 2000 .
- To check and replace the throttle position (TP) sensor, see Replacing throttle position (TP) sensor .
Fig 2: Identifying Throttle Position (TP) Sensor Connector Terminals
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Fig 3: Identifying Ohmmeter
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Fig 4: Removing Throttle Position (TP) Sensor
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