Test Description

Number(s) below refer to the step number(s) on the Diagnostic Chart.

8. The following chart can be used to check the sending unit:

DTC P0462- FUEL LEVEL SENSOR CIRCUIT LOW INPUT

Step	Action	Values	Yes	No
1	Was the "On-Board Diagnostic (OBDII) System Check" performed?	-	Go to Step 2	Go to On-Board Diagnostic (OBD-II) System Check
2	Disconnected the fuel level sensor harness from its connector at the fuel tank. Ignition "ON", Engine "OFF". Using a DVM, measure the voltage between the sensor harness positive and ground wires. Is the voltage approximately equal to the specified value?	5 V	Go to Step 6	Go to Step 3
3	Ignition "ON", Engine "OFF". With a DVM, backprobe the ECM connector at the terminal which supplies 5 volts to the fuel level sensor. Is the voltage approximately equal to the specified value?	5 V	Go to Step 4	Go to Step 8
4	Ignition "ON", Engine "OFF". Fuel level sensor disconnected from wiring harness. With a DVM, probe the 5 -volt supply wire at the sensor harness. Is the voltage approximately equal to the value measured in Step 4?	-	Go to Step 5	Go to Step 11
5	Locate for open or high resistance connection in the ground wire between the ECM and the fuel level sensor. Repair wiring harness. Is the action complete?	-	Verify repair	-
6	Remove the fuel level sensor and check the following: Does the arm move freely? Are the wires open or intermittently open when wiggled? Do The resistance values match the specification chart? Was a problem found?	-	Go to Step 7	Go to Step 11
7	Replace the fuel level sensor. Is the action complete?	-	Verify repair	-
8	Install the test ECM. Program the test ECM (Immobilizer system). Refer to IMMOBILIZER SYSTEM . Check the OBD-II test for following condition: When the ignition is "ON", turn on the MIL and RPL (RPL is put out after 3 seconds). When the engine is started. Did the DTC disappear?	-	Go to Step 9	Go to Step 2
9	Replace the original ECM. Check the poor connection between the ECM and ECM connector. Recheck the OBD -II test again. When the engine is started. Did the DTC disappear?	-	Verify repair	Go to Step 10
10	Disconnect the ABS control unit connector. Reprogramming the original ECM. (Engine control and Immobilizer control) Recheck the OBD -II. Did the DTC disappear?	-	Verify repair	Go to Step 11
11	Replace the ECM. Recheck the OBD -II test again. Did the DTC disappear?	-	Verify repair	Refer to Diagnostic Aids
12	Repair short to ground between the ECM connector and the fuel level sensor. Is the action complete?	-	Verify repair	-