211
EFI003
*Fan Schedule: Fan ON @ 185° F, OFF @ 175° F.
*High Temperature REV Limiter 5000 RPM @ 230° F.
*Thermostat opens @ approximately 180° F noted by a 2-5° drop
momentarily.
Coolant (COOL) Diagnostic Mode
EFI 003
Display: Engine coolant temperature as measured by the
ECT sensor.
DTC: P0116, P0117, P0118, P0119
Usage: Monitor coolant temperature to verify the follow-
ing.
1. ECT sensor signal
2. High Temperature indicator (on @ 230° F.)
3. Thermostat opening @ approximately 180° F, indi-
cated by a momentary drop or pause in the rising
temperature reading.
4. Fan ON @ 185° F, OFF @ 175° F.
A. fan motor
B. fan relay
C. fan fuse
D. wiring connections
5. High Temperature Rev Limiter 5000 RPM @ 230° F.
Fuel Sensor (FUEL) Diagnostic Mode
EFI010
Display: Fuel level signal from the fuel level sensor
(measured in ohms).
DTC: C1400, C1401, C1402
Usage: Check output of the fuel level sensor
1. Full fuel is indicated by a reading of 0-26 ohms (FIS)
or 0-11 ohms (TRV)
2. Empty is indicated by a reading of 100-105 ohms
(FIS) or 68-105 ohms (TRV)
* 110-500 ohms, suspect the fuel level sensor or wiring
* 0-100 ohms but no fuel gauge indication, suspect the fuel gauge
Tachometer (tACH) Diagnostic
Mode
EFI009
Display: Engine RPM
DTC: P0336, P0337, P0339
Usage: Verify engine speed signal from the following.
1. CKP (crankshaft position) sensor to ECM
2. ECM (CAN) signal to gauge (tachometer)
3. ECM (CAN) signal to EPS
