129
DTC: P2122, P2123, P2127, P2128, P2138
Usage: Monitor accelerator position sensor percentage to
verify the following:
1. Accelerator position sensor signal.
Brake Switches (BRAKE)
MOD578
Display: Brake switch signal from switch 1 (front) and
switch 2 (rear).
DTC: P0504
Usage: Monitor brake switch signal to verify the follow-
ing:
1. Brake switch signals.
Engine Control Module (ECM)/
Electronic Power Steering (EPS)
MOD237
Display: Communication from the Engine Control Mod-
ule (ECM) and the Electronic Power Steering (EPS).
“ON” is receiving communication and “OFF” is not
receiving communication.
DTC: U0100, U0155
Usage: Monitor connection between the ECM and EPS.
Fuel Sensor (FUEL)
MOD238
Display: Fuel level signal from the fuel level sensor.
DTC: C1400
Usage: Check output of the fuel level sensor:*
1. Full fuel is indicated by a reading of 0-5 ohms.
2. Empty is indicated by a reading of 95-105 ohms.
* If output is 110-500 ohms, suspect the fuel level sensor or wiring.
If output is 0-110 ohms but no gauge indication, suspect the gauge.
Tachometer (RPM)
MOD239
Display: Engine RPM
DTC: P0219, P0370, P0371, P0372, P0373, P0374
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.
Speedometer (SPEED)
MOD240
Display: Vehicle speed signal.
DTC: P0500, P0503
Usage: Verify speedometer sensor signal from the following:
1. Speed sensor to ECM.
2. ECM (CAN) signal to gauge (speedometer/odometer).
3. ECM (CAN) signal to EPS.
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