On-Vehicle Inspection

1. Check the operation.
   1. Using a speedometer tester, inspect the speedometer fro allowable indication error and check the operation of the odometer.
      SPEEDOMETER (MPH) (U.S.) REFERENCE CHART
      
      

      Standard indication	Allowable range
      20	20 to 23
      40	40 to 43.5
      60	60 to 64
      80	80.0 to 84.5
      100	100 to 105
      120	120 to 125.5
      140	140 to 146

      SPEEDOMETER (KM/H) (CANADA) REFERENCE CHART
      
      

      Standard indication	Allowable range
      20	17.5 to 21.5
      40	38 to 42
      60	58 to 62
      80	78 to 84
      100	98.5 to 104.5
      120	119 to 125
      140	139 to 146
      160	159 to 167
      180	179 to 188
      200	199 to 209
      220	219 to 230

      NOTE: Tire wear and tire over or under inflation will increase the indication error.
   2. Check the deflection width of the speed meter indicator.

   Reference: Below 0.5 km/h (0.3 mph) 

1. Check the input signal wave form.
   1. Remove the combination meter with connectors still connected.
   2. Connect the oscilloscope to terminal C9-10 and body ground.
   3. Start the engine.
      Fig 1: Connecting Oscilloscope To Terminal C9-10 And Body Ground

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   4. Check the signal wave form according to the condition(s) in the table below.
   ITEM CONDITION SPECIFICATION
   
   

   Item	Condition
   Tool setting	5 V/DIV, 20 ms/DIV
   Vehicle condition	Driving at approx. 20 km/h (12 mph)

   OK: 

   As shown in the illustration 

HINT:

As vehicle speed increases, the cycle of the signal wave form narrows.

Fig 2: Checking Signal Wave Form

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Check the operation
   1. Connect a tune-up test tachometer, and start the engine.
      NOTE:

      • Reversing the connection of the tachometer will damage the transistors and diodes inside.
      • When removing or installing the tachometer, be careful not to drop or subject it to heavy shocks.
   2. Compare the test and tachometer indications.

1. Inspect the circuit.
   1. Disconnect the connector from the sender gauge.
   2. Turn the ignition switch ON, then check the position of the receiver gauge needle.

      OK: 

      Needle position is on (EMPTY). 

   3. Connect terminals 2 and 3 on the wire harness side connector and turn the ignition switch ON, then check the position of the receiver gauge needle.

Fig 3: Identifying Fuel Sender Gauge Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: 

Needle position is on (FULL). 

1. Inspect the circuit.
   1. Disconnect the connector from the sender gauge.
   2. Turn the ignition switch ON, check the fuel level needle indicates EMPTY and fuel level warning lights light on.

OK: 

Fuel level warning light comes on. 

1. Inspect the circuit.
   1. Disconnect the connector from the sender gauge.
   2. Turn the ignition switch ON, check the position of the water temperature receiver gauge needle.

      Needle position: COOL 

   3. Connect between terminals on the wire harness side connector, then check the position of the water temperature receiver gauge needle.

Needle position: HOT 

1. Inspect the circuit.
   1. Disconnect the connector from the low oil pressure switch.
   2. Turn the ignition switch ON.
   3. Connect the terminal of wire harness side connector and ground, then check the warning low oil pressure warning light.

OK: 

Low oil pressure warning light comes on. 

1. Inspect the parking brake warning light.
   1. Disconnect the connector from the parking brake switch.
   2. Turn the ignition switch ON.
   3. Ground the terminal of the wire harness side connector, then check the parking brake warning light.

   OK: 

   Brake warning light comes on. 

2. Inspect the brake fluid level warning light.
   1. Disconnect the connector from the brake fluid level warning switch.
   2. Turn the ignition switch ON.
   3. Connect a terminal to the other terminal of the wire harness side connector, then check the brake fluid level warning switch.

OK: 

Brake warning light comes on. 

1. Remove the reservoir tank cap and strainer.
2. Disconnect the connector.
3. Measure the resistance between the terminals.

   Standard: 

   Float up (switch off): 10 kΩ or higher 

4. Use a siphon, etc. to take fluid out of the reservoir tank.
5. Measure the resistance between the terminals.

   Standard: 

   Float down (switch on): Below 1 Ω 

6. Pour the fluid back in the reservoir tank.

Indicator Condition: 

1. Set the display window to ODO.
2. Turn the ignition switch off.
3. Pressing the reset switch, turn the ignition switch to the ON position (keep pressing for at least 5 seconds.)
4. Reset procedure is completed.

HINT:

• If the ignition switch is off during reset procedure, reset mode is canceled.
• If the reset switch is pushed off during the reset procedure, reset mode is canceled and the display shows the condition prior to the reset procedure.