Meter: Overview Toyota 4Runner IV рестайлинг

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DESCRIPTION

When turn the ignition switch to the ON position, the combination meter assembly communicates with the ECM by the direct line.

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1. INSPECT COMBINATION METER ASSEMBLY Check the input signal waveform. Remove the combination meter assembly with the connector(s) still connected. Connect the oscilloscope to the terminals C9-6 (TM INPUT) and body ground. Start the engine. Check the signal waveform according to the condition(s) in the table below. COMBINATION METER ASSEMBLY Item Condition Tool Setting 5V/DIV., 10ms/DIV. Vehicle Condition Engine idle speed OK: The waveform is displayed (Scheme 5) NG: Go to step 2 OK: REPLACE COMBINATION METER ASSEMBLY
2. CHECK HARNESS AND CONNECTOR (COMBINATION METER - ECM) Disconnect the C9 and E9 connectors. Measure the resistance according to the value(s) in the table below. Standard resistance COMBINATION METER - ECM Tester Connection Condition Specified Condition TACH (E9-1) - TM INPUT(C9-6) Always Below 1 ohms TM INPUT (C9-6) - Body ground Always 10 kohms or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: REPLACE ECM

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1. CHECK HARNESS OR CONNECTOR Disconnect the F14 connector from the fuel sender gauge assembly. Check the meter indicator conditions according to the table below. Standard HARNESS OR CONNECTOR Wire connection Condition Specified condition 2-3 Short circuit (Ignition switch ON) Fuel gauge indicates "F" or more (Combination meter) Measure the voltage according to the value(s) in the table below. Standard voltage HARNESS OR CONNECTOR VOLTAGE Tester connection Condition Specified condition 2 - Body ground Ignition switch ON 10 to 14 V NG: Go to step 3 OK: GO TO NEXT STEP
2. INSPECT FUEL SENDER GAUGE ASSEMBLY Remove the fuel sender gauge assembly. Check that the float position is between E and F. Measure the resistance between terminals 2 and 3 of the connector according to the value(s) in the table below. Standard resistance FLOAT POSITION SPECIFICATION Float level Float position mm (in.) Resistance (ohms) F 88.6 (3.49) +-3 (0.12) 4.0 +-1 1/2 6.4 (0.25) 59 E 102.9 (4.05) +-3 (0.12) 110.0 +-2.5 NG: INSPECT INCLINATION SENSOR ASSEMBLY OK: REPLACE COMBINATION METER ASSEMBLY
3. CHECK HARNESS AND CONNECTOR (FUEL SENDER GAUGE ASSEMBLY COMBINATION METER) Disconnect the C10 and F14 connectors. Measure the resistance according to the value(s) in the table below. Standard resistance FUEL SENDER GAUGE ASSEMBLY COMBINATION METER Tester connection Condition Specified condition C10-3 (FUEL(FR)) - F14-3 Always Below 1 ohms 10-11 (FUEL GND) - F14-2 Always Below 1 ohms NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: GO TO NEXT STEP
4. INSPECT INCLINATION SENSOR ASSEMBLY Inspect the inclination sensor assembly. NG: REPLACE INCLINATION SENSOR ASSEMBLY OK: REPLACE COMBINATION METER ASSEMBLY

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Confirm that the speedometer, the tachometer, the fuel receiver gauge and SFI system are normal, then check this circuit.

Refer to SFI system for 1GR-FE (See DTC CHECK/CLEAR ) or 2UZ-FE (See DTC CHECK / CLEAR for 2UZ-FE).

HINT

If this circuit has a malfunction, average fuel consumption display/instantaneous fuel consumption display/possible running distance display cannot be displayed correctly.

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1. INSPECT COMBINATION METER ASSEMBLY (TAU-B) Remove the combination meter assembly. Measure the voltage according to the value(s) in the table below. Standard voltage COMBINATION METER ASSEMBLY (TAU-B) (RH) Tester connection Condition Specified condition C10-5 (TAU-B INPUT) - Bodyground Ignition switch ON 10 to 14 V NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: GO TO NEXT STEP
2. INSPECT COMBINATION METER ASSEMBLY (TAU-G) Check the input signal waveform. Remove the combination meter assembly. Connect the oscilloscope to terminal C9-8 (TAU-G INPUT) and body ground. Start the engine. Check the signal waveform according to the condition(s) in the table below. Waveform: OSCILLOSCOPE WAVEFORM REFERENCE Item Condition Tool setting 10V/DIV., 20ms/DIV. Vehicle condition Engine idle speed HINT: As the engine speed goes higher, the frequency becomes shorter. NG: Go to step 3 OK: GO TO NEXT STEP
3. CHECK HARNESS AND CONNECTOR (ECM - COMBINATION METER) Disconnect the E6 and C9 connectors. Measure the resistance according to the value(s) in the table below. Standard resistance ECM - COMBINATION METER Taster connection Condition Specified condition E6-2 (#10) - C9-8 (TAU-G INPUT) Always Below 1 ohms E6-2 (#10) - Body ground Always 10 kohms or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: GO TO NEXT STEP
4. CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY (LCD DISPLAY) Check the LCD display appears. OK: LCD display appears. NG: GO TO «AIR CONDITIONING SYSTEM»(ref-280565-S36203673452008022200000) OK: GO TO NEXT STEP
5. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - COMBINATION METER) Disconnect the A17 and C9 connectors. Measure the resistance according to the value(s) in the table below. Standard resistance AIR CONDITIONING AMPLIFIER - COMBINATION METER Tester connection Condition Specified condition A17-19 (DMOT) - C9-2 (UART IN) Always Below 1 ohms A17-19 (DMOT) - Body ground Always 10 kohms or higher A17-20 (DMIN) - C9-3 (UART OUT) Always Below 1 ohms A17-20 (DMIN) - Body ground Always 10 kohms or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: REPLACE COMBINATION METER ASSEMBLY

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1. REMOVE INSTRUMENT CLUSTER FINISH PANEL SUB-ASSEMBLY Disengage the 7 clips. Disconnect the connectors and remove the instrument cluster finish panel sub-assembly.
2. REMOVE COMBINATION METER ASSEMBLY Remove the 3 screws. Loosen the 2 bolts and remove the combination meter assembly.

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1. REMOVE SPEEDOMETER GLASS Remove the 2 screws. Disengage the 6 claws and remove the speedometer glass.
2. REMOVE NO. 1 COMBINATION METER COVER Remove the 10 screws and No. 1 combination meter cover.
3. REMOVE INCLINATION SENSOR ASSEMBLY Remove the 2 screws and inclination sensor assembly.

See also:
• MIL CIRCUIT
• MIL CIRCUIT
• SRS WARNING LIGHT DOES NOT COME ON