Jeep Wrangler TJ. Manual — part 86
TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Connect the C2 PCM harness connector.
Ignition on, engine not running.
With the DRBIII
t, read the ECT Sensor voltage.
Is the voltage above 4.6 volts?
All
Yes
→ Go To 4
No
→ Go To 7
4
Connect a jumper wire between the (K2) ECT Signal circuit and the (K900) Sensor
ground circuit at the ECT Sensor harness connector.
With the DRBIII
t, read the ECT voltage.
Is the voltage below 1.0 volt?
All
Yes
→ Replace the ECT Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 5
5
Turn the ignition off.
Disconnect the C2 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 (K2) ECT Signal circuit from the ECT Sensor harness
connector to the appropriate terminal of special tool #8815.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 6
No
→ Repair the open in the (K2) ECT Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
6
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 (K900) Sensor ground circuit from the ECT Sensor
harness connector to the appropriate terminal of special tool #8815.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 9
No
→ Repair the open in the (K900) Sensor ground circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
7
Turn the ignition off.
Disconnect the C2 PCM harness connector.
Measure the resistance between ground and the (K2) ECT Signal circuit at the ECT
Sensor harness connector.
Is the resistance below 100 ohms?
All
Yes
→ Repair the short to ground in the (K2) ECT Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 8
69
DRIVEABILITY - NGC
P0116-ENGINE COOLANT TEMPERATURE CIRCUIT PERFORMANCE —
Continued
TEST
ACTION
APPLICABILITY
8
Measure the resistance between the (K2) ECT Signal circuit and the (K900) Sensor
ground circuit at the ECT Sensor harness connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Repair the short between the (K900) Sensor ground and the (K2)
ECT Signal 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.
Using the schematics as a guide, inspect the wire harness and connectors. Pay
particular attention to all Power and Ground circuits.
If there are no possible causes remaining, view repair.
All
Repair
Replace and program the Powertrain Control Module per Service
Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
70
DRIVEABILITY - NGC
P0116-ENGINE COOLANT TEMPERATURE CIRCUIT PERFORMANCE —
Continued
Symptom:
P0117-ENGINE COOLANT TEMPERATURE SENSOR CIRCUIT LOW
When Monitored and Set Condition:
P0117-ENGINE COOLANT TEMPERATURE SENSOR CIRCUIT LOW
When Monitored:
With the ignition on. Battery voltage greater than 10 volts.
Set Condition:
The Engine Coolant Temperature (ECT) sensor circuit voltage at the PCM
is less than 0.5 of a volt for more than 2.6 seconds. One Trip Fault
POSSIBLE CAUSES
ECT SENSOR VOLTAGE BELOW 0.5 OF A VOLT
ECT SENSOR
(K2) ECT SIGNAL CIRCUIT SHORTED TO GROUND
(K2) ECT SIGNAL CIRCUIT SHORTED TO THE (K900) SENSOR GROUND CIRCUIT
PCM
TEST
ACTION
APPLICABILITY
1
Ignition on, engine not running.
With the DRBIII
t, read the ECT Sensor voltage.
Is the voltage below 0.5 of a volt?
All
Yes
→ Go To 2
No
→ Refer to the INTERMITTENT CONDITION Symptom (Diagnos-
tic Procedure).
Perform POWERTRAIN VERIFICATION TEST VER - 5.
2
Turn the ignition off.
Disconnect the ECT harness connector.
Ignition on, engine not running.
With the DRBIII
t, read ECT Sensor voltage.
Is the voltage above 1.0 volt?
All
Yes
→ Replace the ECT Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 3
3
Turn the ignition off.
Disconnect the C2 PCM harness connector.
Measure the resistance between ground and the (K2) ECT Signal circuit at the ECT
Sensor harness connector.
Is the resistance below 100 ohms?
All
Yes
→ Repair the short to ground in the (K2) ECT Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 4
71
DRIVEABILITY - NGC
TEST
ACTION
APPLICABILITY
4
Measure the resistance between the (K2) ECT Signal circuit and the (K900) Sensor
ground circuit at the ECT Sensor harness connector.
Is the resistance below 100 ohms?
All
Yes
→ Repair the short between the (K900) Sensor ground and the (K2)
ECT Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 5
5
NOTE: Before continuing, check the PCM harness connector terminals for
corrosion, damage, or terminal push out. Repair as necessary.
Using the schematics as a guide, inspect the wire harness and connectors. Pay
particular attention to all Power and Ground circuits.
If there are no possible causes remaining, view repair.
All
Repair
Replace and program the Powertrain Control Module per Service
Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
72
DRIVEABILITY - NGC
P0117-ENGINE COOLANT TEMPERATURE SENSOR CIRCUIT LOW —
Continued
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст