Speedometer Malfunction: Procedure
- CHECK CAN COMMUNICATION SYSTEM
- 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 6
A: Go to next step
- Check if a CAN communication DTC is output. Refer to DIAGNOSIS SYSTEM
.
- PERFORM ACTIVE TEST USING TECHSTREAM (SPEED METER OPERATION)
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON.
- Turn the Techstream on.
- Enter the following menus: Body Electrical / Combination Meter / Active Test.
- Check the operation by referring to the values in the table below.COMBINATION METER
Tester Display Test Part Control Range Diagnostic Note Speed Meter Operation Speedometer 0, 40, 80, 120 mph*1 - 0, 40, 80, 120, 160, 200, 240 km/h*2 *1: for U.S.A.
*2: except U.S.A.
OK
Gauge indication is normal.
NG → See step 7
OK: Go to next step
- READ VALUE USING TECHSTREAM (VEHICLE SPEED METER)
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON.
- Turn the Techstream on.
- Enter the following menus: Body Electrical / Combination Meter / Data List.
- Check the values by referring to the table below.COMBINATION METER
Tester Display Measurement Item/Range Normal Condition Diagnostic Note Vehicle Speed Meter Vehicle speed / Min.: 0 km/h (0 mph), Max.: 255 km/h (158 mph) Almost same as actual vehicle speed (Speedometer tester indication) - OK
Vehicle speed displayed on the Techstream is almost the same as the actual vehicle speed measured using a speedometer tester (calibrated chassis dynamometer).
NG → See step 4
OK → See step 7
- READ VALUE USING TECHSTREAM (FR/FL/RR/RL WHEEL SPEED)
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON.
- Turn the Techstream on.
- Enter the following menus: Chassis / ABS/VSC/TRAC / Data List.
- Check the values by referring to the table below.ABS/VSC/TRAC
Tester Display Measurement Item/Range Normal Condition Diagnostic Note FR Wheel Speed FR wheel speed sensor reading / min.: 0 km/h (0 mph), max.: 326.4 km/h (202 mph) Actual wheel speed Similar speed as indicated on speedometer FL Wheel Speed FL wheel speed sensor reading / min.: 0 km/h (0 mph), max.: 326.4 km/h (202 mph) Actual wheel speed Similar speed as indicated on speedometer RR Wheel Speed RR wheel speed sensor reading / min.: 0 km/h (0 mph), max.: 326.4 km/h (202 mph) Actual wheel speed Similar speed as indicated on speedometer RL Wheel Speed RL wheel speed sensor reading / min.: 0 km/h (0 mph), max.: 326.4 km/h (202 mph) Actual wheel speed Similar speed as indicated on speedometer Vehicle Speed Maximum wheel speed sensor reading / min.: 0 km/h (0 mph), max.: 326.4 km/h (202 mph) Actual vehicle speed Speed indicated on speedometer OK
Vehicle speed displayed on the Techstream is almost the same as the actual vehicle speed measured using a speedometer tester (calibrated chassis dynamometer).
Result
Result Proceed to OK A NG (for 2AZ-FE) B NG (for 2ZR-FE) C
B → See step 8
C → See step 9
A: Go to next step
- REPLACE SKID CONTROL ECU
- Replace the skid control ECU with a new or a known good one. Refer to REMOVAL - Step 11
.
OK
The operation of the speedometer returns to normal.
NG → See step 7
OK → END
- Replace the skid control ECU with a new or a known good one. Refer to REMOVAL - Step 11
.
- GO TO CAN COMMUNICATION SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING
- REPLACE COMBINATION METER. Refer to REMOVAL - Step 4
- GO TO BRAKE CONTROL SYSTEM (for 2AZ-FE). Refer to HOW TO PROCEED WITH TROUBLESHOOTING
- GO TO BRAKE CONTROL SYSTEM (for 2ZR-FE). Refer to HOW TO PROCEED WITH TROUBLESHOOTING