Dodge Neon / Neon SRT-4. Manual — part 590

TEST

ACTION

APPLICABILITY

14

Turn the ignition off.
Disconnect the MAP Sensor harness connector.
Connect a jumper wire between the (K1) MAP Sensor Signal circuit and the (K4)
Sensor ground circuit.
With the DRBIII

t, monitor the MAP Sensor voltage.

Ignition on, engine not running.
Is the voltage below 1.0 volt?

All

Yes

→ Replace the MAP Sensor.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

No

→ Go To 15

15

Turn the ignition off.
Disconnect the MAP Sensor harness connector.
Disconnect the PCM harness connector.
CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING
THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMI-
NALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL
MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.
Measure the resistance of the (K1) MAP Signal circuit from the MAP Sensor harness
connector to the appropriate terminal of special tool #8815.
Is the resistance below 5.0 ohms?

All

Yes

→ Go To 16

No

→ Repair the open in the (K1) MAP Signal circuit.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

16

Turn the ignition off.
Disconnect the MAP Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between ground and the (K1) MAP Signal circuit at the MAP
Sensor harness connector.
Is the resistance below 100 ohms?

All

Yes

→ Repair the short to ground in the (K1) MAP Signal circuit.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

No

→ Go To 17

17

NOTE: Before continuing, check the PCM harness connector terminals for
corrosion, damage, or terminal push out. Repair as necessary.
If there are no possible causes remaining, view repair.

All

Repair

Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

265

DRIVEABILITY - NGC

P1187-THOTTLE INLET PRESSURE/MAP CORRELATION —

Continued

Symptom:

P1189-TIP SENSOR CIRCUIT LOW

When Monitored and Set Condition:

P1189-TIP SENSOR CIRCUIT LOW

When Monitored:

Ignition on. Throttle Position Sensor voltage less than 1.2 volts.

Battery voltage greater than 10 volts.

Set Condition:

The TIP Sensor signal voltage is less than 0.0782 volts for 1.7 seconds.

One trip Fault.

POSSIBLE CAUSES

TIP SENSOR VOLTAGE BELOW .078 VOLTS

(K6) 5 VOLT SUPPLY CIRCUIT SHORT TO GROUND

(K6) 5 VOLT SUPPLY CIRCUIT SHORT TO SENSOR GROUND

(K6) 5 VOLT SUPPLY OPEN

TIP SENSOR INTERNAL FAILURE

(A23) TIP SIGNAL CIRCUIT SHORTED TO GROUND

(A23) TIP SIGNAL CIRCUIT SHORTED TO (K167) SENSOR GROUND CIRCUIT

PCM

TEST

ACTION

APPLICABILITY

1

Start the engine.
With the DRBIII

t, read the TIP Sensor voltage.

Is the voltage below .078 of a volt?

All

Yes

→ Go To 2

No

→ Refer to the INTERMITTENT CONDITION symptom in the

Driveability category.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

2

Turn the ignition off.
Disconnect the TIP Sensor harness connector.
Ignition on, engine not running.
Measure the voltage of the (K6) 5 Volt Supply circuit in the TIP Sensor harness
connector.
Is the voltage between 4.5 to 5.2 volts?

All

Yes

→ Go To 3

No

→ Go To 6

266

DRIVEABILITY - NGC

TEST

ACTION

APPLICABILITY

3

Turn the ignition off.
Disconnect the TIP Sensor harness connector.
Ignition on, engine not running.
With the DRBIII

t, monitor the TIP Sensor voltage.

Is the voltage between 4.5 and 5.2 volts?

All

Yes

→ Replace the TIP Sensor.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

No

→ Go To 4

4

Turn the ignition off.
Disconnect the TIP Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between the (A23) TIP Sensor signal circuit at the TIP Sensor
harness connector and ground.
Is the resistance below 100 ohms?

All

Yes

→ Repair the short to ground in the (A23) TIP Sensor signal circuit.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

No

→ Go To 5

5

Turn the ignition off.
Disconnect the TIP Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between the (A23) TIP Sensor signal circuit and the (K167)
Sensor ground circuit in the TIP Sensor harness connector.
Is the resistance below 100 ohms?

All

Yes

→ Repair the (A23) TIP Sensor signal circuit for a short to the

(K167) Sensor ground circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

No

→ Go To 9

6

Turn the ignition off.
Disconnect the TIP Sensor harness connector.
Disconnect the PCM harness connector.
CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING
THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMI-
NALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL
MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.
Measure the resistance of the (K6) 5 Volt Supply circuit from the TIP Sensor harness
connector to the appropriate terminal of special tool #8815.
Is the resistance below 100 ohms?

All

Yes

→ Go To 7

No

→ Repair the open (K6) 5 Volt Supply circuit.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

267

DRIVEABILITY - NGC

P1189-TIP SENSOR CIRCUIT LOW —

Continued

TEST

ACTION

APPLICABILITY

7

Turn the ignition off.
Disconnect the TIP Sensor harness connector.
Disconnect the PCM Harness connector.
Measure the resistance between the (K6) 5 Volt Supply circuit in the TIP Sensor
harness connector and ground.
Is the resistance below 5.0 ohms?

All

Yes

→ Repair the (K6) 5 Volt Supply circuit for a short to ground.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

No

→ Go To 8

8

Turn the ignition off.
Disconnect the TIP Sensor harness connector.
Measure the resistance between the (K6) 5 Volt Supply circuit and the (K167) Sensor
Ground circuit in the TIP Sensor harness connector.
Is the resistance below 5.0 ohms?

All

Yes

→ Repair the (K6) 5 Volt Supply circuit for a short to the (K167)

Sensor Ground circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

No

→ Go To 9

9

NOTE: Before continuing, check the PCM harness connector terminals for
corrosion, damage, or terminal push out. Repair as necessary.
If there are no possible causes remaining, view repair.

All

Repair

Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

268

DRIVEABILITY - NGC

P1189-TIP SENSOR CIRCUIT LOW —

Continued