System Indicators: Notes
For indicator trouble shooting index, see Fig 1 . If the system is okay, the ABS/TCS indicator goes off once after turning the ignition switch ON without starting the engine, and then come on again and go off several seconds later after starting the engine. This occurs because the ABS/TCS control unit is turned on by the IG2 power source. The ABS/TCS indicator comes on when the TCS control unit detects a problem in the system. The ABS indicator or ABS system indicator will also come on under following conditions, even though the system is operating properly. See ABS INDICATOR and TCS INDICATOR .
To determine the actual cause of the problem, question the customer about the problem, taking these conditions into consideration.
- When a problem is detected and the ABS indicator comes on, there are cases when the indicator stays on until the ignition switch is turned OFF, and cases when the indicator goes off automatically when the system returns to normal. For DTC 61, the indicator goes off automatically when the system returns to normal. For all other codes, the indicator stays on until the ignition switch is turned OFF.
- For DTCs 12, 14, 16, 18, 21, 22, 23, 24, 51, 52 & 53, the ABS indicator goes off when the vehicle is driven again and the system is okay after the ignition switch is turned from OFF to ON. However, if the DTC is cleared, the CPU resets and the indicator goes off right after the engine is started if the system is okay.
- The ABS is not operational when the ABS indicator is ON; the TCS is not operational when the TCS indicator is ON.
- When the ABS and TCS indicators are both ON, trouble shoot the ABS first.
- When the TCS indicator and MIL are both ON, trouble shoot the PGM-FI system first.
- See Figure and Figure for circuit trouble shooting charts.