PROBLEM SYMPTOMS TABLE
HINT
Use the table below to help determine the cause of the problem symptom. The potential causes of the symptoms are listed in order of probability in the "Suspected area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Electronically controlled brake system
| Symptom | Suspected Area | See |
|---|---|---|
| ABS does not operate, BA does not operate, EBD does not operate | 1, Check the DTC again and make sure that the normal code is output. | DTC CHECK / CLEAR |
| 2. IG power source circuit and ground circuit | DTC C1241/41 LOW BATTERY POSITIVE VOLTAGE OR ABNORMALLY HIGH BATTERY POSITIVE VOLTAGE; DTC C1242/42 OPEN IN IG1 / IG2 POWER SOURCE CIRCUIT | |
| 3. Front speed sensor circuit | DTC C0200/31 FRONT SPEED SENSOR RH CIRCUIT; DTC C0205/32 FRONT SPEED SENSOR LH CIRCUIT; DTC C1271/71 LOW OUTPUT SIGNAL OF FRONT SPEED SENSOR RH (TEST MODE DTC); DTC C1272/72 LOW OUTPUT SIGNAL OF FRONT SPEED SENSOR LH (TEST MODE DTC) | |
| 4. Rear speed sensor circuit | DTC C0210/33 REAR SPEED SENSOR RH CIRCUIT; DTC C0215/34 REAR SPEED SENSOR LH CIRCUIT; DTC C1273/73 LOW OUTPUT SIGNAL OF REAR SPEED SENSOR RH (TEST MODE DTC); DTC C1274/74 LOW OUTPUT SIGNAL OF REAR SPEED SENSOR LH (TEST MODE DTC) | |
| 5. Check the brake actuator with an Techstream. (Check brake actuator operation using the ACTIVE TEST (Check brake actuator operation using the ACTIVE TEST function.) If abnormal, check the hydraulic circuit for leakage. | ON-VEHICLE INSPECTION | |
| 6. If the symptoms still occur even after the above suspected areas are inspected and proved to be normal, replace the skid control ECU. | REMOVAL | |
| ABS does not operate efficiently, BA does not operate efficiently, EBD does not operate efficiently | 1. Check the DTC again and make sure that the normal code is output. | DTC CHECK / CLEAR |
| 2. Front speed sensor circuit | DTC C0200/31 FRONT SPEED SENSOR RH CIRCUIT; DTC C0205/32 FRONT SPEED SENSOR LH CIRCUIT; DTC C1271/71 LOW OUTPUT SIGNAL OF FRONT SPEED SENSOR RH (TEST MODE DTC); DTC C1272/72 LOW OUTPUT SIGNAL OF FRONT SPEED SENSOR LH (TEST MODE DTC) | |
| 3. Rear speed sensor circuit | DTC C0210/33 REAR SPEED SENSOR RH CIRCUIT; DTC C0215/34 REAR SPEED SENSOR LH CIRCUIT; DTC C1273/73 LOW OUTPUT SIGNAL OF REAR SPEED SENSOR RH (TEST MODE DTC); DTC C1274/74 LOW OUTPUT SIGNAL OF REAR SPEED SENSOR LH (TEST MODE DTC) | |
| 4. Stop light switch circuit | DTC C1249/49 OPEN IN STOP LIGHT SWITCH CIRCUIT | |
| 5. Check the brake actuator with an Techstream. If abnormal, check the hydraulic circuit for leakage. | ON-VEHICLE INSPECTION | |
| 6. If the symptoms still occur even after the above suspected areas are inspected and proved to be normal, replace the skid control ECU. | REMOVAL | |
| ABS warning light abnormal (Remains on) | 1. ABS warning light circuit | ABS WARNING LIGHT REMAINS ON |
| 2. Skid control ECU | REMOVAL | |
| ABS warning light abnormal (Does not come on) | 1. ABS warning light circuit | ABS WARNING LIGHT DOES NOT COME ON |
| 2. Skid control ECU | REMOVAL | |
| DTC of ABS check cannot be done | 1. Check the DTC again and make sure that the normal code is output. | DTC CHECK / CLEAR |
| 2. TC terminal circuit | TC AND CG TERMINAL CIRCUIT | |
| 3. If the symptoms still occur even after the above suspected areas are inspected and proved to be normal, replace the skid control ECU. | REMOVAL | |
| Sensor signal check cannot be done | 1. TS and CG terminal circuit | TS AND CG TERMINAL CIRCUIT |
| 2. Skid control ECU | REMOVAL | |
| VSC does not operate | 1. Check the DTC again and make sure that the normal code is output. | DTC CHECK / CLEAR |
| 2. IG power source circuit and ground circuit | DTC C1241/41 LOW BATTERY POSITIVE VOLTAGE OR ABNORMALLY HIGH BATTERY POSITIVE VOLTAGE; DTC C1242/42 OPEN IN IG1 / IG2 POWER SOURCE CIRCUIT | |
| 3. Check the hydraulic circuit for leakage. | ||
| 4. Front speed sensor circuit | DTC C0200/31 FRONT SPEED SENSOR RH CIRCUIT; DTC C0205/32 FRONT SPEED SENSOR LH CIRCUIT; DTC C1271/71 LOW OUTPUT SIGNAL OF FRONT SPEED SENSOR RH (TEST MODE DTC); DTC C1272/72 LOW OUTPUT SIGNAL OF FRONT SPEED SENSOR LH (TEST MODE DTC) | |
| 5. Rear speed sensor circuit | DTC C0210/33 REAR SPEED SENSOR RH CIRCUIT; DTC C0215/34 REAR SPEED SENSOR LH CIRCUIT; DTC C1273/73 LOW OUTPUT SIGNAL OF REAR SPEED SENSOR RH (TEST MODE DTC); DTC C1274/74 LOW OUTPUT SIGNAL OF REAR SPEED SENSOR LH (TEST MODE DTC) | |
| 6. Yaw rate / Deceleration sensor circuit | DTC C1210/36 ZERO POINT CALIBRATION OF YAW RATE SENSOR UNDONE; DTC C0371/71 YAW RATE SENSOR (TEST MODE DTC); DTC C1232/32 STUCK IN ACCELERATION SENSOR; DTC C1234/34 YAW RATE SENSOR MALFUNCTION; DTC C1243/43 ACCELERATION SENSOR STUCK MALFUNCTION; DTC C1244/44 OPEN OR SHORT IN ACCELERATION SENSOR CIRCUIT; DTC C1245/45 ACCELERATION SENSOR OUTPUT MALFUNCTION; DTC C1279/79 ACCELERATION SENSOR OUTPUT VOLTAGE MALFUNCTION (TEST MODE DTC); DTC C1336/39 ZERO POINT CALIBRATION OF ACCELERATION SENSOR UNDONE; DTC C1381/97 YAW RATE AND / OR ACCELERATION SENSOR POWER SUPPLY VOLTAGE MALFUNCTION | |
| 7. Steering sensor circuit | DTC C1231/31 STEERING ANGLE SENSOR CIRCUIT MALFUNCTION | |
| 8. If the symptoms still occur even after the above suspected areas are inspected and proved to be normal, replace the skid control ECU. | REMOVAL | |
| SLIP indicator light abnormal | 1. SLIP indicator light circuit | SLIP INDICATOR LIGHT CIRCUIT |
| 2. Skid control ECU | REMOVAL | |
| DTC of VSC check cannot be done | 1. Check the DTC again and make sure that the normal code is output. | DTC CHECK / CLEAR |
| 2. TC and CG terminal circuit | TC AND CG TERMINAL CIRCUIT | |
| 3. If the symptoms still occur even after the above suspected areas are inspected and proved to be normal, replace the skid control ECU. | REMOVAL | |
| VSC warning light abnormal (Remains on) | 1. Check the DTC again and make sure that the normal code is output. | DTC CHECK / CLEAR |
| 2. VSC warning circuit | VSC WARNING LIGHT REMAINS ON | |
| 3. If the symptoms still occur even after the above suspected areas are inspected and proved to be normal, replace the skid control ECU. | REMOVAL | |
| VSC warning light abnormal (Does not come on) | 1. Check the DTC again and make sure that the normal code is output. | DTC CHECK / CLEAR |
| 2. VSC warning circuit | VSC WARNING LIGHT DOES NOT COME ON | |
| 3. If the symptoms still occur even after the above suspected areas are inspected and proved to be normal, replace the skid control ECU. | REMOVAL | |
| Brake Control warning light abnormal (Remains on) | 1. Check the DTC again and make sure that the normal code is output. | DTC CHECK / CLEAR |
| 2. Brake Control warning circuit | BRAKE CONTROL WARNING LIGHT REMAINS ON | |
| 3. If the symptoms still occur even after the above suspected areas are inspected and proved to be normal, replace the skid control ECU. | REMOVAL | |
| Brake Control warning light abnormal (Does not come on) | 1. Check the DTC again and make sure that the normal code is output. | DTC CHECK / CLEAR |
| 2. Brake Control warning circuit | BRAKE CONTROL WARNING LIGHT DOES NOT COME ON | |
| 3. If the symptoms still occur even after the above suspected areas are inspected and proved to be normal, replace the skid control ECU. | REMOVAL |
PROBLEM SYMPTOMS REFERENCE
Scheme 45
Scheme 46
Scheme 47
Scheme 48
Scheme 49
- CHECK BATTERY VOLTAGE Measure the battery voltage. Standard voltage: 10 to 14 V
- CHECK SKID CONTROL ECU Measure the voltage and resistance between each terminal or between each terminal and the body ground. Connect the Teachstream to the DLC3, and check the communication condition with the skid control ECU. Using an oscilloscope, check that the pulse generates between each terminal or between each terminal and the body ground. NOTE: Each inspection should be performed from the back of the connector with the connector connected to the skid control ECU. The voltage between the terminals of the brake actuator assembly may become 0 V due to the fail-safe function when the brake control warning light comes on (malfunctioning). (Scheme 45): Identifying ECU Connector Terminals HINT: Inspect the ECU from the wire harness side while the connector is connected. WIRE HARNESS SPECIFICATION Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition R1+(S7-2) - GND(S7-1) P - W Main relay power 1 Push power switch ON (READY) 9.1 to 13.6 V BS1 (S7-3) - GND(S7-1) B - W Battery source 1 Push power switch ON (READY) Approx. 1.5 sec. after pushing power switch ON (READY) 8.8 to 14 V SMC1 (S7-4) - GND (S7-1) Y - W Master cut solenoid 1 output Push power switch ON (READY) Brake pedal depressed approx. 1.5 sec. after pushing power switch ON (READY) Below 1.5 V +BCTY (S7-5) - GND (S7-1) V - W Courtesy power input Driver door open --> close Approx. 5 sec. 8 to 16 V --> Below 1 V SLAFR- (S7-6) - GND (S7-1) W - W FR solenoid (-) output Push power switch ON (READY) Approx. 1.5 sec. after pushing power switch ON (READY) Below 1.5 V SLAFR+ (S7-7) - GND (S7-1) R - W FR solenoid (+) output Push power switch ON (READY) Brake pedal depressed approx. 1.5 sec. after pushing power switch ON (READY) Pulse generation (see waveform 1) E(S7-8) - GND(S7-1) L - W Pressure sensor ground Push power switch OFF Below 1 ohms VCM1 (S7-9) - GND (S7-1) P - W Pressure sensor power Push power switch ON (READY) 4.75 to 5.25 V MR1+(S7-11) - GND(S7-1) GR - W Motor relay power 1 Push power switch ON (READY) Approx. 1.5 sec. after pushing power switch ON (READY) 8.8 to 14 V SR1 (S7-12) - GND(S7-1) L-W Main relay output 1 Push power switch ON (READY) Approx. 1.5 sec. or more after pushing power switch ON (READY) Below 1 V SCSS(S7-13) - GND(S7-D BR - W Stroke simulator cut solenoid output Push power switch ON (READY) Brake pedal depressed Below 1.5 V SLARL+(S7-15) - GND (S7-1) L - W RL solenoid (+) output Push power switch ON (READY) Brake pedal depressed approx. 1.5 sec. after pushing power switch ON (READY) Pulse generation (see waveform 1) SLRRL+(S7-16) - GND (S7-1) W - W RL solenoid (+) output Push power switch ON (READY) Brake pedal depressed approx. 1.5 sec. after pushing power switch ON (READY) Pulse generation (see waveform 1) SLRFR+(S7-17) - GND (S7-1) Y - W FR solenoid (+) output Push power switch ON (READY) After approx. 1.5 sec, brake pedal depressed --> released Pulse generation (see waveform 2) PRL(S7-18) - GND(S7-1) G - W RL pressure sensor input Push power switch ON (READY) Brake pedal released 0.3 to 0.8 V SG1 (S7-20) - GND(S7-1) BR - W Pressure sensor shield ground 1 Push power switch OFF Below 1 ohms PACC(S7-21) - GND (S7-1) W - W Accumulator pressure sensor input Push power switch ON (READY) After pump motor operates and stops by pedal operation 3.3 to 4.7 V FR-(S7-22) - GND(S7-1) L - W FR sensor (-) input Push power switch OFF Below 1 ohms PFR(S7-23) - GND(S7-1) Y - W FR pressure sensor input Push power switch ON (READY) Brake pedal released 0.3 to 0.8 V MR1 (S7-25) - GND(S7-1) L - W Motor relay output 1 Push power switch ON (READY) Pump motor is operating Below 1.5 V SLRRL- (S7-26) - GND (S7-1) P - W RL solenoid (-) output Push power switch ON (READY) Approx. 1.5 sec. after pushing power switch ON (READY) Below 1.5 V SLARL- (S7-27) - GND (S7-1) LG - W RL solenoid (-) output Push power switch ON (READY) Approx. 1.5 sec. after pushing power switch ON (READY) Below 1.5 V MTT(S7-29) - GND(S7-1) R - W Motor test input Push power switch ON (READY) Pump motor is operating 3.5 V or higher PMC1 (S7-30) - GND (S7-1) R - W Master pressure sensor input 1 Push power switch ON (READY) Brake pedal released 0.3 to 0.8 V PCK1 (S7-31) - GND(S7-1) B - W Pressure sensor check output 1 Push power switch ON (READY) Approx. 1.5 sec. after pushing power switch ON (READY) 4.75 to 5.25 V FR+(S7-32) - GND(S7-1) P - W FR sensor (+) input Vehicle speed input Pulse generation (see waveform 3) SLRFR - (S7-34) - GND (S7-1) B - W FR solenoid (-) output Push power switch ON (READY) Approx. 1.5 sec. after pushing power switch ON (READY) Below 1.5 V +BI1 (S8-3) - GND(S8-1, 2) B - W Main relay power input 1 Push power switch OFF 10 to 14 V +BO1(S8-5) - GND(S8-1, 2) Y - W Main relay power output 1 Push power switch ON (IG) 8.8 to 14 V IG1 (S8-7) - GND(S8-1, 2) B - W IG1 power Push power switch ON (IG) 10 to 14 V RSS(S8-10) - GND(S8-1, 2) BR - W Speed sensor shield ground Push power switch OFF Below 1 ohms BZ(S8-12) - GND(S8-1, 2) BR - W Warning buzzer output Push power switch ON (READY) Buzzer is operating Below 1 V STP(S8-14) - GND(S8-1, 2) R - W Stop light switch signal input Push power switch ON (READY) Brake pedal depressed --> released 8 to 14 V --> Below 1 V CAN-L(S8-18) - GND(S8-1,2) W-W. CAN communication (Send and receive-) Check DTC using Techstream CAN communication's DTC is not output CAN-H(S8-19) - GND (S.8-1,2) B - W CAN communication (Send and receive+) Check DTC using Techstream CAN communication's DTC is not output FAIL (S8-20) - GND (S8-1, 2) P - W Capacitor communication (Receive) Push power switch ON (READY) Approx. 1.5 sec. after pushing power switch ON (READY) Pulse generation (See waveform 5) SP1 (S8-22) - GND(S8-1, 2) V - W Speed meter output Vehicle speed input Pulse generation (See waveform 4) RL-(S8-27) - GND(S8-1, 2) B - W RL sensor (-) input Push power switch OFF Below 1 ohms D/G(S8-28) - GND(S8-1, 2) W - W Diagnosis output Push power switch ON (READY) 9.1 to 13.6 V ENA(S8-30) - GND(S8-1, 2) B - W Capacitor communication (Send) Push power switch ON (READY) Approx. 1.5 sec. after pushing power switch ON (READY) Pulse generation (See waveform 6) TS(S8-32) - GND(S8-1, 2) L - W Sensor diagnosis check input Push power switch ON (READY) Below 1.5 V --> 9.1 to 13,6 V VBZ(S8-33) - GND(S8-1, 2) B - W Warning buzzer power Push power switch ON (READY) 9.1 to 13.6 V RL+(S8-35) - GND(S8-1, 2) W - W RL sensor (+) input Vehicle speed input Pulse generation (See waveform 3) +BO2(S9-4) - GND(S9-1, 2) W - W-B Main relay power output 2 Push power switch ON (READY) 8.8 to 14 V +BI2(S9-5) - GND(S9-1, 2) R - W-B Main relay power input 2 Push power switch OFF 10 to 14 V VCSK(S9-6) - GND(S9-1, 2) B - W-B Stroke sensor power Push power switch ON (READY) 3.75 to 4.95 V SSK(S9-7) - GND(S9-1, 2) Shielded - W-B Stroke sensor shield ground Push power switch OFF Below 1 ohms SKG(S9-8) - GND(S9-1, 2) W - W-B Stroke sensor ground Push power switch OFF Below 1 ohms PKB(S9-14) - GND(S9-1, 2) R - W-B Parking brake signal input Parking brake applied --> released Below 1.5 V --> 9.1 to 13.6 V SKS1 (S9-21) - GND(S9-1,2) R-W-B Stroke sensor signal input 1 Push power switch ON (READY) Brake pedal released 0.46 to 1.35 V SKS2 (S9-22) - GND (S9-1.2) G-W-B Stroke sensor signal input 2 Push power switch ON (READY) Brake pedal released 2.56 to 4.35 V RR-(S9-23) - GND(S9-1, 2) B-W-B RR sensor (-) input Push power switch OFF Below 1 ohms RR+(S9-31) - GND(S9-1, 2) W - W-B RR sensor (+) input Vehicle speed input Pulse generation (See waveform 3) SLAFL+(S10-1) - GND (S10-4) P - W-B FL solenoid (+) output Push power switch ON (READY) Brake pedal depressed approx. 1.5 sec. alter pushing power switch ON (READY) Pulse generation (See waveform 1) SLAFL-(S10-2) - GND (S10-4) O - W-B FL solenoid (-) output Push power switch ON (READY) Approx. 1.5 sec. after pushing power switch ON (READY) Below 1.5 V SMC2(S10-3) - GND (S10-4) LG - W-B Master cut solenoid 2 output Push power switch ON (READY) Brake pedal depressed approx. 1.5 sec. after pushing power switch ON (READY) Below 1.5 V IG2(S10-5) - GND(S10-4) 0-W-B IG2 power Push power switch ON (READY) 10 to 14 V LBL(S10-6) - GND(S10-4) P - W-B Brake fluid level switch input Reservoir level switch OFF --> ON 4 to 4.65 V-> Below 1.5 V BS2(S10-7) - GND(S10-4) P - W-B Battery source 2 Push power switch ON (READY) Approx. 1.5 sec. after pushing power switch ON (READY) 8.8 to 14 V SLRFL+(S10-8) - GND (S10-4) Y - W-B FL solenoid (+) output Push power switch ON (READY) After approx. 1.5 sec, brake pedal depressed --> released Pulse generation (See waveform 2) SLARR- (S10-9) - GND (S10-4) P - W-B RR solenoid (-) output Push power switch ON (READY) Approx. 1.5 sec. after pushing power switch ON (READY) Below 1.5 V SG2(S10-12) - GND (S10-4) Shielded - W-B Pressure sensor shield ground 2 Push power switch OFF Below 1 ohms FSS(S10-13) - GND (S10-4) BR - W-B Speed sensor shield ground Push power switch OFF Below 1 ohms VCM2(S10-14) - GND (S10-4) B-W-B Pressure sensor power 2 Push power switch ON (READY) 4.75 to 5.25 V SR2(S10-15) - GND (S10-4) V-W-B Main relay output 2 Push power switch ON (READY) Approx. 1.5 sec. after pushing power switch ON (READY) Below 1 V R2+(S10-17) - GND(S10-4) Y - W-B Main relay power 2 Push power switch ON (READY) 9.1 to 13.6 V SLRRR-(S10-18) - GND (S10-4) BR - W-B RR solenoid (-) output Push power switch ON (READY) Approx. 1.5 sec. after pushing power switch ON (READY) Below 1.5 V SLARR+(S10-19) - GND (S10-4) V - W-B RR solenoid (+) output Push power switch ON (READY) Brake pedal depressed approx. 1.5 sec. after pushing power switch ON (READY) Pulse generation (See waveform 1) SLRRR+(S10-20) - GND (S10-4) R - W-B RR solenoid (+) output Push power switch ON (READY) Brake pedal depressed approx. 1.5 sec. after pushing power switch ON (READY) Pulse generation (See waveform 1) PCK2(S10-21) - GND (S10-4) L - W-B Pressure sensor check output 2 Push power switch ON (READY) 4.75 to 5.25 V FL-(S10-22) - GND(S10-4) G - W-B FL sensor (-) input Push power switch OFF Below 1 ohms PFL(S10-23) - GND(S10-4) R - W-B FL pressure sensor input Push power switch ON (READY) Brake pedal released 0.3 to 0.8 V MR2+(S10-25) - GND (S10-4) R-W-B Motor relay power 2 Push power switch ON (READY) Approx. 1.5 sec. after pushing power switch ON (READY) 8.8 to Below 14 V SLRFL-(S10-26) - GND (S10-4) L-W-B FL solenoid (-) output Push power switch ON (READY) Approx. 1.5 sec. after pushing power switch ON (READY) Below 1.5 V PMC2(S10-27) - GND (S10-4) W - W-B Master pressure sensor input 2 Push power switch ON (READY) Brake pedal released 0.3 to 0.8 V FL+(S10-28) - GND(S10-4) R - W-B FL sensor (+) input Vehicle speed input Pulse generation (See waveform 3) E2(S10-29) - GND(S10-4) G - W-B Pressure sensor ground 2 Push power switch OFF Below 1 ohms MR2(S10-30) - GND (S10-4) G - W-B Motor relay output 2 Push power switch ON (READY) Pump motor is operating Below 1.5 V PRR(S10-31) - GND (S10-4) Y-W-B RR pressure sensor input Push power switch ON (READY) Brake pedal released 0.3 to 0.8 V Using an oscilloscope, check the waveform 1. Waveform 1 (Reference) WAVEFORM REFERENCE CHART Item Content Symbols (Terminal No.) SLAFR+ (S7-7) - GND (S7-1) SLARL+ (S7-15) - GND (S7-1) SLRRL+ (S7-16) - GND (S7-1) SLAFL+ (S10-2) - GND (S10-4) SLARR+ (S10-19) - GND (S10-4) SLRRR+ (S10-20) - GND (S10-4) Tool Setting 5V/DIV.,200msec./DIV. Condition Brake pedal depressed (Scheme 46): Identifying Waveform 1 NOTE: Normal waveform is output only when BS 1 and 2 voltages are normal (10 to 14 V). Using an oscilloscope, check the waveform 2. Waveform 2 (Reference) WAVEFORM REFERENCE CHART Item Content Symbols (Terminal No.) SLRFR+ (S7-17) - GND (S7-1) SLRFL+ (S10-8) - GND (S10-4) Tool Setting 5V/DIV.,200msec./DIV. Condition Brake pedal depressed --> released NOTE: Normal waveform is output only when BS 1 and 2 voltages are normal (10 to 14 V). see scheme 22: Identifying Waveform 2 Using an oscilloscope, check the waveform 3. Waveform 3 (Reference) WAVEFORM REFERENCE CHART Item Content Symbols (Terminal No.) FR+(S7-32) - GND(S7-1) RL+(S8-35) - GND(S8-1,2) RR+(S9-31) - GND(S9-1,2) FL+(S10-28) - GND(S10-4) Tool Setting 1 V/DIV., 200 msec./DIV. Condition While driving at approximately 18 mph (30 km/h) (Scheme 47): Identifying Waveform 3 NOTE: As the vehicle speed (tire rotating speed) becomes faster, the cycle becomes shorter and the output voltage becomes larger. Using an oscilloscope, check the waveform 4. Waveform 4 (Reference) WAVEFORM REFERENCE CHART Item Content Symbols (Terminal No.) SP1 (S8-22) - GND(S8-1,2) Tool Setting 5 V/DIV., 50 msec./DIV. Condition While driving at approximately 12 mph (20 km/h) (Scheme 48): Identifying Waveform 3 NOTE: As the vehicle speed (tire rotating speed) becomes faster, the cycle becomes shorter. Using an oscilloscope, check the waveform 5. Waveform 5 (Reference) WAVEFORM REFERENCE CHART Item Content Symbols (Terminal No.) FAIL(S8-20) - GND(S8-1,2) Tool Setting 5 V/DIV., 200 msec./DIV. Condition Power switch ON (READY) (Scheme 49): Identifying Waveform 5 Using an oscilloscope, check the waveform 6. Waveform 6 (Reference) WAVEFORM REFERENCE CHART Item Content Symbols (Terminal No.) ENA (S8-30) - GND (S8-T, 2) Tool Setting 5 V/DIV., 100 msec./DIV. Condition Power switch ON (READY) see scheme 26: Identifying Waveform 6