Fuel Receiver Gauge Malfunction: Procedure

1. Check if a CAN communication DTC is output. Refer to DIAGNOSIS SYSTEM .
   RESULT
   
   

   Result	Proceed to
   CAN communication DTC is not output	A
   CAN communication DTC is output	B

B → See step   9 

A: Go to next step 

1. Use the Active Test to check the operation of the fuel receiver gauge. Refer to DATA LIST / ACTIVE TEST .
   COMBINATION METER
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Fuel Meter Operation	Fuel receiver gauge	Empty, 1/2, Full	Confirm that the vehicle is stopped with the engine idling.

   OK

   Fuel receiver gauge indication is normal.

NG → See step   7 

OK: Go to next step 

1. Use the Data List to check if the fuel receiver gauge is operating properly. Refer to DATA LIST / ACTIVE TEST .
   COMBINATION METER
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Fuel Input	Fuel input signal/Min.: 0, Max.: 127.5	Current fuel level displayed	Unit: Liters

   OK

   Fuel level signal displayed on the Techstream is almost the same as the fuel receiver gauge indication.

NG → See step   10 

OK: Go to next step 

1. Disconnect the C50 meter connector.
2. Disconnect the H12 gauge connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   C50-11 (L) - H12-2 (FS)	Always	Below 1 Ω
   C50-10 (E) - H12-3 (FE)	Always	Below 1 Ω
   C50-11 (L) - Body ground	Always	10 kΩ or higher
   C50-10 (E) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

Fig 1: Inspecting Fuel Suction Plate Sub-Assembly

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the fuel suction plate sub-assembly. Refer to REMOVAL .
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A-2 (FS) - B-2	Always	Below 1 Ω
   A-3 (FE) - B-1

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Fuel Sender Gauge Assembly)
   *b	Lower Side (to Fuel Sender Gauge Assembly)
   *c	Connector A
   *d	Connector B

NG → See step   8 

OK: Go to next step 

1. Remove the fuel sender gauge assembly. Refer to REMOVAL .
   Fig 2: Inspecting Fuel Sender Gauge Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   1 - 2	Float position F (upper)	13.5 to 16.5 Ω
   	Float position E (lower)	405.5 to 414.5 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Fuel Sender Gauge Assembly)
   *b	Float Position F (Upper)
   *c	Float Position E (Lower)

NG → See step   11 

OK → See step   12