Inspection Procedure

Perform Active Test By OBD II Scan Tool Or Toyota Hand-Held Tester
1. Check water temperature receiver gauge operation.
  1. Connect the OBD II scan tool or TOYOTA hand-held tester to DLC3.
  2. Turn the ignition switch ON and push the OBD II scan tool or TOYOTA hand-held tester main switch ON.
  3. Select the ACTIVE TEST mode on the OBD II scan tool or TOYOTA hand-held tester.
  4. Check that the prove moves as OBD II scan tool or TOYOTA hand-held tester directs in each range.
  1. OK: The Meter Operations Normally. Go To Step 2 , (Read Value Of OBD II Scan Tool Or Toyota Hand-Held Tester).
  2. NG: Check And Replace Combination Meter Assy
Read Value Of OBD II Scan Tool Or Toyota Hand-Held Tester
1. Check output value of ECM.
  1. Connect the OBD II scan tool or TOYOTA hand-held tester to DLC3.
  2. Turn the ignition switch ON and push the OBD II scan tool or TOYOTA hand-held tester main switch ON.
  3. Select the DATA LIST mode on the OBD II scan tool or TOYOTA hand-held tester.
  4. Read the engine coolant temperature value on the OBD II scan tool or TOYOTA hand-held tester.
  1. OK: Same As Actual Engine Coolant Temperature.
1. OK: Go To Step 3 , (Check That Malfunction Disappear A Known Good Combination Meter Is Installed).
2. NG: Go To Engine Control System
Check That Malfunction Disappears, A Known Good Combination Meter Is Installed
1. Check that malfunction disappears when a known good combination meter is installed.
  
  Fig 1: Reviewing Combination Meter Information
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. A : Check And Replace Combination Meter Assy
2. B : Check And Replace ECM