Optional Indicator Lamps
The optional indicator lamps that are available include: intake heater on indicator, low brake fluid warning, low coolant warning, low fuel warning, automatic transmission range inhibit warning, pall filter indicator, differential lock warning, and wheel spin indicator.
Air Filter Indicator
The optional air filter indicator lamp (AIR FILTER legend) illuminates when the air cleaner filter element is clogged, restricting the intake air flow below 25 inH 2 O.
If the air filter indicator lamp is steadily illuminated for any period of time, check the air intake restriction gauge. If needed, replace the air filter, and reset the air intake restriction gauge.
Important: Never attempt to clean the air filter.
Alternator No Charge Indicator
The optional alternator no charge indicator lamp (NO CHARGE legend) illuminates when the alternator is not charging properly.
Electronic Stability Control (ESC) Indicator
The ESC indicator, shown in Fig. for the indicator lamp used on the ICU3S instrument panel and Fig. for the indicator lamp used on the Ametek instrument panel, illuminates when the ESC system activates.
Fig. 1, ESC Indicator Lamp, ICU3S Panel
Fig. 2, ESC Indicator Lamp, Ametek Panel
Wait to Start Indicator
Note: Although it appears in the row of optional indicator lamps, the wait to start indicator is a standard indicator.
The wait to start indicator, shown in Fig., illuminates with the ignition switch in the ON position prior to engine start-up. To avoid generating a system fault code, do not crank the engine until the wait to start indicator goes out.
