SYSTEM TESTING
| Symptom | Perform Test |
|---|---|
| DTC Always On, Malfunction In ECU ABS Warning Light Circuit | Test A |
| DTC Always On, Malfunction in ECU VSC Warning Light Circuit | TEST B |
| ABS Warning Light Circuit | TEST C |
| BRAKE Warning Light Circuit | TEST D |
| SLIP Indicator Light Circuit | TEST E |
| TC Terminal Circuit | TEST F |
| TS Terminal Circuit | TEST G |
| VSC Buzzer Circuit | TEST H |
| VSC OFF Indicator Light, VSC OFF Switch Circuit | TEST I |
SYSTEM INDEX
For circuit description (Scheme 101)
Scheme 101
For wiring diagram (Scheme 102) For testing procedure (Scheme 103)- (Scheme 105).
Scheme 102
Scheme 103
Scheme 104
Scheme 105
For circuit description (Scheme 106)
Scheme 106
For wiring diagram (Scheme 107) For testing procedure (Scheme 108)- (Scheme 110).
Scheme 107
Scheme 108
Scheme 109
Scheme 110
If the ECU detects trouble, it lights the ABS warning light while, at the same time, it prohibits ABS control. At this time, the ECU records a DTC in memory.
Connect terminals Tc and CG of the DLC3 to make the ABS warning light blink and output the DTC. see scheme 6
For wiring diagram (Scheme 111) For testing procedure (Scheme 112)and (Scheme 113).
Scheme 111
Scheme 112
Scheme 113
The BRAKE warning light lights up when the brake fluid is insufficient, the parking brake is applied or the EBD is defective.
For wiring diagram (Scheme 114) For testing procedure (Scheme 115)and (Scheme 116).
Scheme 114
Scheme 115
Scheme 116
The SLIP indicator blinks during TRAC & VSC operation.
For wiring diagram (Scheme 111) For testing procedure (Scheme 117)
Scheme 117
Connecting terminals Tc and CG of the DLC3 causes the ECU to display the DTC by flashing the ABS warning light and VSC warning light.
For wiring diagram (Scheme 118) For testing procedure (Scheme 119)
Scheme 118
Scheme 119
The sensor check circuit detects abnormalities in the sensor signal which cannot be detected with the DTC check.
Connecting terminals Ts and CG of the DLC3 starts the check. see scheme 4
For wiring diagram (Scheme 120) For testing procedure (Scheme 121)
Scheme 120
Scheme 121
The VSC buzzer sounds during VSC operation.
For wiring diagram (Scheme 122) For testing procedure (Scheme 123)and (Scheme 124).
Scheme 122
Scheme 123
Scheme 124
This is the TRAC & VSC control main switch. Pressing the VSC OFF switch stops TRAC & VSC operation and turns the VSC OFF indicator on. The VSC OFF indicator also turns on when the ECU prohibits ABS & TRAC & VSC controls. Turn the ignition switch off and ensure TRAC & VSC control comes on when the ignition switch turns on the next time.
For wiring diagram for 2002 vehicles (Scheme 125) For wiring diagram for 2003 vehicles (Scheme 126) For testing procedure (Scheme 127)and (Scheme 128).
