Content .. 906 907 908 909 ..

Dodge Caliber. Manual - part 908

*ENGINE CRANKS BUT DOES NOT START

For a complete wiring diagram Refer to Section 8W.

Possible Causes

NO START PRE-TEST

POWERTRAIN FUSES OPEN

SECONDARY INDICATORS PRESENT

ENGINE MECHANICAL PROBLEM

FUEL CONTAMINATION

Diagnostic Test

NO START PRE-TEST

NOTE: The following list of items must be checked before continuing with any no start tests.
The battery must be fully charged and in good condition. A low charged battery may produce invalid test results. If
the battery is low, charge the battery and then attempt to start the vehicle by cranking the engine for 15 seconds,
3 consecutive times. This will allow any DTCs to set that may have been erased due to a dead battery.

Attempt to communicate with the PCM using the scan tool. If the PCM is experiencing a no response condition,
refer to section 8 Electrical Electronic Control Module Electrical Diagnostics for the proper tests.

Read the PCM DTCs with the scan tool. If any DTCs are present, they must be repaired before continuing with any
other No Start diagnostic tests. Refer to the Table of Contents for the related P-code that is reported by the PCM.

Inspect all fuses in the TIPM and the Junction Box. If an open fuse(s) is found, check the related circuit(s) for a
short to ground or high resistance.

Using a test light, check the Powers and Ground to the PCM. The test light must illuminate brightly as if jumpered
across a battery.

Attempt to communicate with the Instrument Cluster and VTSS. If you are unable to establish communications refer
to 8 Electrical Electronic Control Module Electrical Diagnostics for the proper Diagnostic procedures.

The Sentry Key Immobilizer System must be operating properly. Check for proper communication with the scan tool
and check for DTCs that may be stored in the Sentry Key Immobilizer Module (SKREEM). Repair the DTC(s) before
continuing.

If no DTCs are found, using the scan tool, select Clear PCM (BATT Disconnect).

Crank the engine several times. Using the scan tool, read DTCs. If a DTC is present perform the DTC diagnostics
before continuing.

Were any problems found?

Yes

>> Repair as necessary.

Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

>> Go to 2

OPEN FUSE

Check for any open fuses in both TIPM or Junction Block that may be related to the no start condition.

NOTE: If an open fuse is found, inspect the related circuit(s) for a short to ground or high resistance.

Are any of the fuses open?

Yes

>> Replace the open fuse and check the related circuit(s) for a short to ground.

Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

>> Go to 3

ENGINE ELECTRICAL DIAGNOSTICS - GPEC

9 - 919

SECONDARY INDICATORS PRESENT

NOTE: Diagnose only the Secondary Indicators that would cause a no start.
Ignition on, engine not running.

With the scan tool, check the Secondary Indicators while cranking the engine that would cause a no start condition.

Are there any Secondary Indicators present while cranking the engine?

Yes

>> Refer to the Engine Electrical Diagnostics group and perform the tests related to the no start secondary

indicator that is reported by the scan tool.

Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

>> Go to 4

POSSIBLE MECHANICAL PROBLEMS

Check for any of the following conditions/mechanical problems.

ENGINE VALVE TIMING - must be within specifications, check for broken timing components

ENGINE COMPRESSION - must be within specifications

ENGINE EXHAUST SYSTEM - must be free of any restrictions or leaks.

Are there any engine mechanical problems?

Yes

>> Repair as necessary.

Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

>> Go to 5

FUEL PUMP DELIVERY

Verify that the Fuel tank is not empty before continuing.

Follow the diagnostics for Checking Fuel Delivery in the Driveability section of this section.

Was the No Start condition solved after following the above diagnostic test?

Yes

>> Test Complete.

>> Check for contamination/water in the fuel. Make sure the fuel being used in this vehicle meets manu-

factures Fuel Requirement, refer to the service manual.

Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

9 - 920

ENGINE ELECTRICAL DIAGNOSTICS - GPEC

*FUEL PRESSURE LEAK DOWN

For a complete wiring diagram Refer to Section 8W.

Possible Causes

FUEL PUMP MODULE

FUEL INJECTOR(S)

Diagnostic Test

FUEL PUMP MODULE

NOTE: Before continuing visually and physically inspect the fuel delivery system for external leaks or dam-
age. Repair / replace as necessary.
Turn the ignition off.

WARNING: The fuel system is under a constant pressure (even with the engine off). Before testing or ser-
vicing any fuel system hose, fitting or line, the fuel system pressure must be released. Failure to follow
these instructions can result in personal injury or death.
Install special tool #6539 (5/16

) or #6631 (3/8

) fuel line adapter.

Install the fuel pressure gauge.

Start the engine and allow the fuel system to reach maximum pressure.

Turn the ignition off.

NOTE: Fuel specification is 407 KPa +/- 34 KPa (59 psi +/- 5 psi). If the fuel pressure is not within specifi-
cation refer to Checking The Fuel Delivery System.
Using special tool #C4390, Hose Clamp Pliers, pinch the rubber fuel line between the fuel pressure gauge and the
engine.

Monitor the fuel pressure gauge for a minimum of 5 minutes.

NOTE: The pressure should not fall below 241 KPa (35 psi)

Does the fuel pressure drop?

Yes

>> Replace Fuel Pump Module.

Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

>> Go to 2

FUEL INJECTOR(S)

Start the engine and allow the fuel system to reach maximum pressure.

Turn the ignition off.

NOTE: NOTE: Fuel specification is 407 KPa +/- 34 KPa (59 psi +/- 5 psi).
Using special tool #C4390, Hose Clamp Pliers, pinch the rubber fuel line between the fuel pressure gauge and fuel
pump module.

Monitor the fuel pressure gauge for a minimum of 5 minutes.

NOTE: The pressure should not fall below 241 KPa (35 psi)

Does the fuel pressure drop?

Yes

>> Replace the leaking fuel injectors.

Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

>> Test Complete.

ENGINE ELECTRICAL DIAGNOSTICS - GPEC

9 - 921

*HARD START FUEL SYSTEM

For a complete wiring diagram Refer to Section 8W.

Possible Causes

FUEL CONTAMINATION

RESTRICTED FUEL SUPPLY LINE

FUEL PUMP INLET STRAINER PLUGGED

FUEL PUMP MODULE

FAULTY FUEL PUMP MODULE

FUEL INJECTOR(S)

Diagnostic Test

CHECKING FUEL PRESSURE

Turn the ignition off.

Ignition on, engine not running.

With a scan tool, actuate the Fuel Pump and observe the fuel pressure gauge.

NOTE: NOTE: Fuel pressure specification is 407 KPa +/- 34 KPa (59 psi +/- 5 psi).

Choose a conclusion that best matches your fuel pressure reading.

Below Specification

Go to 2

Within Specification

Go to 4

RESTRICTED FUEL SUPPLY LINE

Turn the ignition off.

Install special tool #6539 (5/16

) #6631(3/8

) fuel line adapter and the fuel pressure gauge between the fuel supply

line and the fuel pump module.

Ignition on, engine not running.

With the scan tool, actuate the Fuel Pump and observe the fuel pressure gauge.

NOTE: Fuel pressure specification is 407 KPa +/- 34 KPa (59 psi +/- 5 psi).

Is the fuel pressure within specification?

Yes

>> Visually and physically inspect the fuel supply lines between the fuel tank and the fuel rail. Repair/re-

place as necessary.

Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

>> Go to 3

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ENGINE ELECTRICAL DIAGNOSTICS - GPEC

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