On-Vehicle Inspection

1. Check the operation.
   1. Using a speedometer tester (calibrated chassis dynamometer), check the speedometer indication according to the below.

      Reference 

      CHASSIS DYNAMOMETER INDICATION AND ALLOWABLE RANGE REFERENCE
      
      

      Chassis Dynamometer Indication	Allowable Range
      20 mph	19.0 to 21.5 mph
      40 mph	38 to 41.0 mph
      60 mph	57.5 to 61.0 mph
      80 mph	77.5 to 81.5 mph
      100 mph	97 to 102.0 mph
      120 mph	116.5 to 122.0 mph

      NOTE: Tire wear as well as over or under inflation will cause errors.
   2. Check the deviation from the acceptable range of the speedometer indication.

      Reference: 

      Less than 0.5 km/h (0.3 mph) 

      If the indication is not as specified, go to PROBLEM SYMPTOMS TABLE  .

1. Check the output signal waveform.
   1. Remove the combination meter, with the connector still connected.
   2. Using an oscilloscope, check the waveform of the combination meter.
      WAVEFORM REFERENCE
      
      

      Tester Connection	Tool Setting	Vehicle Condition
      C6-27 - Body ground	5 V/DIV., 20 ms./DIV.	Driving at approx. 20 km/h (12.4 mph)

      Fig 1: Identifying Combination Meter Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: 

      Refer to  Fig 1 . 

HINT:

As vehicle speed increases, the cycle of the waveform narrows.

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

      • Do not reverse the connections of the tachometer. This will damage its transistors and diodes.
      • When removing or installing the tachometer, be careful not to drop or strike it.
   2. Compare the test tachometer indications and vehicle tachometer indications under the following conditions:
      • Vehicle battery voltage is 13.5 V
      • Ambient temperature is 25°C (77°F)

      OK 

      STANDARD INDICATION REFERENCE
      
      

      Standard Indication (rpm)	Acceptable Range (rpm) Data in () are for reference only
      700	630 to 770
      1,000	(900 to 1,100)
      2,000	(1,850 to 2,150)
      3,000	2,800 to 3,200
      4,000	(3,800 to 4,200)
      5,000	4,800 to 5,200
      6,000	(5,750 to 6,250)
      7,000	6,700 to 7,300

      If the indication is not as specified, go to the PROBLEM SYMPTOMS TABLE  .

1. Disconnect the F9 gauge connector.
2. Turn the ignition switch to the ON position, and then check the position of the receiver gauge needle.

   OK: 

   Fuel receiver gauge indicates E 

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

   OK: 

   Fuel receiver gauge indicates F 

   If the result is not as specified, the combination meter may have a malfunction.

   Fig 2: Identifying Fuel Sender Gauge Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the F9 pump and gauge connector.
2. Turn the ignition switch to the ON position, and then check that the fuel receiver gauge indicates E and that the fuel level warning light turns on.

   OK: 

   Fuel level warning light turns on 

   If the result is not as specified, the combination meter may have a malfunction.

   Fig 3: Identifying Fuel Sender Gauge Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the E2 gauge connector.
2. Turn the ignition switch to the ON position, and check the position of the receiver gauge needle.

   OK: 

   Needle position is on (COOL). 

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

   OK: 

   Needle position is on (HOT). 

   Fig 4: Identifying E2 Gauge Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the E3 switch connector.
2. Connect the E3-1 terminal of the wire harness side connector to the body ground.
3. Turn the ignition switch to the ON position, and then check that the low oil pressure warning light turns on.

   OK: 

   Low oil pressure warning light turns on 

   If the result is not as specified, the combination meter may have a malfunction.

   Fig 5: Identifying E3 Switch Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Check the parking brake warning light.
   1. Disconnect the P6 switch connector.
   2. Connect the P6-1 terminal of the wire harness side connector to the body ground.
   3. Turn the ignition switch to the ON position, and then check that the warning light turns on.

      OK: 

      Warning light turns on. 

      Fig 6: Identifying P6 Switch Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check the brake fluid level warning light.
   1. Disconnect the B2 switch connector.
   2. Connect the B2-1 and B2-2 terminals of the wire harness side connector.
   3. Turn the ignition switch to the ON position, and then check that the warning light turns on.

      OK: 

      Warning light turns on. 

      If the result is not as specified, the combination meter may have a malfunction.

      Fig 7: Identifying B2 Switch Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Indicator Condition: 

1. Turn the ignition switch to the ON position.
2. Set the display window to ODO.
3. Turn the ignition switch off.
4. Turn the ignition switch to the ON position while pressing and holding the reset knob for 5 seconds or more.
5. Reset procedure is completed.

   HINT:

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