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DFC – PROBАBLE FAULT – FAULT АCTION  – CORRECTIVE АCTION FIRST CHEСK

141 (14)

 ECTRangeLow. Coolant Sеnsor failure or shоrted to GND

ТurnOnMil. Check ЕCT sensor connector and wiring for a short to GND

SECM (Signal) Рin B15 To ECT Pin 3 SECM (Sensor GND) Pin B1 to ECT Рin 1

SECM (System GND) Рin A16, B17

12

 Signifies the еnd of one pass through the fault list. Nоne, used as end of the fault listidеntification

151 (15)

 ECTRangeHigh. Cooling sensor disconnected or open.

(1) TurnOnMil

(2) Engine off delay

(3) CheckEngineLight

Check if the ECT sensor connector is disconnected or if the ECT circuit is open. SECM (signal), pin B15 - ECT, pin 3 SECM (ground sensor), pin B1 - ECT, pin 1

161 (16)

ECTOverTempFault High engine coolant temperature. The sensor has measured excessive coolant temperature, usually due to engine overheating.

(1) TurnOnMil

(2) Engine off delay

(3) CheckEngineLight

Check the coolant system for clogged radiator, proper coolant level, and system leaks. ECT to GND may be shorted, check ECT signal wiring. SECM (signal), pin B15 - ECT, pin 3 SECM (GND sensor), pin B1 -

ECT, pin 1 SECM (system ground), pin A16, B17

Check regulator for coolant leaks

171

ECT_IR_Fault. Engine coolant temperature does not change properly

Nobody

Check for problems with the cooling system, such as a faulty or jammed thermostat

181

FuelSelectConflict

A fuel selection signal conflict is usually established if both fuel selection signals are shorted to ground.

TurnOnMil

Check the connection of the fuel select switch for short circuit to GND SECM (SIGNAL), track A12 SECM (SIGNAL), track A15

SECM (ground sensor) pin B1

193

CrankEdgesFaultNo crankshaft signal when it is known that the engine is spinning, wire breakage in the crankshaft sensor or a faulty crankshaft sensor\

Check the connections of the SECM crankshaft sensor (SIGNAL), track B5 to the crankshaft sensor, track 3

SECM (ground sensor), pin B1 for crankshaft sensor, pin 2

Switched 12V to crank sensor, pin 1

Check crank sensor

DFC - PROBABLE MALFUNCTION - ACTION MALFUNCTION * - ACTION CORRECTION FIRST CHECK

194

Cranksyncfault

Loss of synchronization on the crankshaft sensor, usually due to noise on the signal or intermittent connection on the crankshaft sensor

Nobody

Check the connections of the SECM crankshaft sensor (SIGNAL), track B5 to the crankshaft sensor, track 3

SECM (Ground Sensor), Pin B1 - Sensor 2 Contact

Switched 12V to crank sensor, pin 1

Check crank sensor

221 (22)

TPS1RangeLow

The voltage of the TPS1 sensor is out of the low level range, it is usually set if the TPS1 signal is shorted to ground, the circuit is open or the sensor is faulty

TurnOnMil

Check the connection of the throttle connector and the TPS1 sensor for an open or a short to ground.

SECM pin B23 (signal) for ETC Pin 6 SECM pin B1 (GND sensor) for

ETC Pin 2

SECM (GND system), pin A16, B17

222

TPS2RangeLow

The voltage of the TPS2 sensor is out of the low level range, it is usually set if the TPS2 signal is shorted to ground, the circuit is open or the sensor is faulty

TurnOnMil

Check the connection of the throttle valve connector and the TPS2 sensor for an open circuit and a short to ground.

SECM B4 contact (signal) to ETC 5 contact SECM B1 contact (signal) to ETC 2 contact

SECM (GND system), pin A16, B17

231 (23)

TPS1RangeHigh

TPS1 sensor high voltage out of range, usually set if TPS1 signal is shorted to power or sensor ground is open

TurnOnMil

Check the throttle connector and wiring of the TPS1 sensor for a short circuit. Contact SECM B23 (signal) to contact ETC 6 Contact SECM B1 (grounding of the sensor) to contact ETC 2

232

TPS2RangeHigh

The TPS2 sensor high voltage is out of range, usually set if the TPS2 signal is shorted to power or to ground

the sensor opened

TurnOnMil

Check the throttle connector and wiring of the TPS1 sensor for a short to SECM, track B4 (signal) to track ETC 5

SECM B1 (Sensor Ground) to ETC 2

241 (24)

TPS1AdaptLoMin

I found out that the closed end of the throttle range of the TPS1 sensor is lower than expected

Nobody

Check throttle connector and pins for corrosion.

To test TPS, disconnect the throttle connector and measure resistance from:

Terminal TPS 2 (GND) to terminal 6 (TPS1 SIGNAL) (0.7 ± 30%)

Pin 3 TPS (PWR) - Pin 6 (SIGNAL TPS1) (1.4 ± 30%)

242

TPS2AdaptLoMin

I found out that the closed end of the throttle range of the TPS2 sensor is lower than expected

Nobody

Check throttle connector and pins for corrosion.

To test TPS, disconnect the throttle connector and measure resistance from:

Pin 2 TPS (GND) - Pin 5 (SIGNAL TPS2) (1.3 K ± 30%)

TPS PIN 3 (PWR) - PIN 5 (TPS2 SIGNAL) (0.6K ± 30%)

251 (25)

TPS1AdaptHiMax Found out that the end of the range of the TPS1 sensor is higher than expected

Nobody

N / a

252

TPS2AdaptHiMax Studied the WOT end of the TPS2 sensor range higher than

expected

Nobody

N / a

271

TPS1AdaptHiMin

The studied end of the WOT range of the TPS1 sensor is lower than expected

Nobody

N / a

272

TPS2AdaptHiMin

The studied end of the WOT range of the TPS2 sensor is lower than expected

Nobody

N / a

281

TPS1AdaptLoMax

Found out that the closed end of the throttle range of the TPS1 sensor is higher than expected

Nobody

N / a

282

TPS2AdaptLoMax

Found out that the closed end of the TPS2 sensor throttle is higher

than expected

Nobody

N / a

291

TPS_Sensors_Conflict TPS sensors differ by more than the expected number. NOTE. The TPS is not repairable and can only be repaired by replacing the DV-EV throttle body assembly.

(1) TurnOnMil

(2) Engine shutdown

Check for DFC 241 and 242

331 (33)

MAPTimeRangeLow Absolute collector pressure sensor input low, usually set if the TMAP pressure signal wire has been disconnected or shorted to ground, or the circuit is open in SECM

Nobody

Check the TMAP connector and MAP signal wiring for an open circuit

TMAP pin 4 - SECM pin B18 (signal)

TMAP Pin 1 - SECM Pin B1 (Sensor Ground)

TMAP 3 pin to SECM B24 pin

(XDRP + 5V DC)

Check the MAP sensor by disconnecting the TMAP connector and taking measurements on the sensor.

Terminal TMAP 1 (GND) to terminal 4 (pressure signal KPA) (2.4 kOhm - 8.2 kOhm)

Terminal TMAP 3 (power) to terminal 4 (pressure signal KPA) (3.4 kOhm - 8.2 kOhm)

332

MAPRangeLow

The manifold absolute pressure sensor input is low, usually set if the TMAP pressure signal wire has been disconnected or shorted to ground, or the circuit is open in SECM

(1) TurnOnMil

(2) CutThrottle

Check the TMAP connector and MAP signal wiring for an open circuit

TMAP pin 4 - SECM pin B18 (signal)

TMAP Pin 1 - SECM Pin B1 (Sensor Ground)

TMAP 3 pin - SECM B24 pin (XDRP + 5 VDC)

Check the MAP sensor by disconnecting the TMAP connector and measuring on the sensor:

Terminal TMAP 1 (GND) to terminal 4 (pressure signal KPA) (2.4 kOhm - 8.2 kOhm)

Terminal TMAP 3 (power) to terminal 4 (pressure signal KPA) (3.4 kOhm - 8.2 kOhm)

341 (34)

MAPTimeRangeHigh The collector absolute pressure sensor input is high, usually set if the TMAP pressure signal wire is shorted to power, shorted to IAT, TMAP or SECM failure.

Nobody

Check the TMAP connector and the MAP signal wiring for a short between the 4 TMAP pin and B18 SECM (signal)

TMAP Pin 1 - SECM Pin B1 (Sensor Ground)

TMAP 3 pin - SECM B24 pin (XDRP + 5 VDC)

Check the MAP sensor by disconnecting the TMAP connector and taking measurements on the sensor.

Terminal TMAP 1 (GND) to terminal 4 (pressure signal KPA) (2.4 kOhm - 8.2 kOhm)

Terminal TMAP 3 (power) to terminal 4 (pressure signal KPA) (3.4 kOhm - 8.2 kOhm)