Engine Cranks But Does Not Run. Cadillac Catera 1999

For 1990-2009 cars only

Makes 🢒 Cadillac 🢒 1999 🢒 Catera 🢒 Engine 🢒 Engine Controls - 3.0L 🢒 Engine Cranks But Does Not Run

Description

This table assumes that the battery condition and the engine cranking speed are OK. If not, refer to Service Category Engine Electrical for diagnosis. Also, make sure that there is adequate fuel in the tank.

Diagnostic Aids

Notice: Using the J 35616-A Connector Test Adapter Kit will prevent damage to the harness connector terminals.

•	Use the J 35616 Connector Test Adapter Kit for any test that requires probing the ECM harness connector or a component harness connector.

•	Unless the engine enters the Clear Flood at the first indication of a flooding condition, a no start may result.

•	If the steps above do not correct the symptoms, refer to Symptoms and Hard Start for diagnosis.

Test Description

The numbers below refer to step numbers on the diagnostic table.

The ground wire to the body is located below the rear of the battery. The ECM ground is located on the mounting bracket the ECM attaches to. All grounds should be tight and free of any corrosion.

Some Powertrain DTCs may require the engine to crank over for up to 15 seconds before setting.

Powertrain DTCs that may prevent the engine from starting include the following:

•	Input sensors such as CKP, ECT, MAF, APP or TP

•	Control circuits such as fuel pump relay or fuel injectors

•	Internal control module DTCs for the ECM or the TAC Module

•	Powertrain theft deterrent DTCs

Make sure the theft deterrent system is functioning properly before continuing with this table. A theft deterrent system fault may cause a no start or start and stall condition.

Compare the values with the normal values found in the engine scan tool data list. Sensor values that have shifted may prevent the engine from starting.

Engine Cranks But Will Not Run

Step

Action

Values

Yes

Did you perform the Powertrain On-Board Diagnostic (OBD) System Check?

Go to Step 2

Go to Powertrain On Board Diagnostic (OBD) System Check

Inspect fuse V2, V3, V5 and fuse 18.

Did you find an open fuse?

Go to Step 12

Go to Step 3

Inspect the ground wire to the ECM and to the body from the battery for the following conditions:

•	Loose connections

•

Corrosion

•	High resistance

•	Open circuit

Repair the circuit as necessary. Refer to Wiring Repairs in Wiring Systems.

Did you find and correct a problem?

Go to Step 13

Go to Step 4

Using the scan tool, inspect for any DTCs that could cause a no start condition.

•	Theft deterrent

•	Powertrain

•	Engine electrical

Are any DTCs set?

Go to applicable DTC table

Go to Step 5

Use a scan tool to monitor the theft deterrent status.

Is the status of the theft deterrent reading Correct Code?

Go to Step 6

Go to Diagnostic System Check - Theft Deterrent in Theft Deterrent

Use a scan tool in order to review the scan tool data list for MAF, TP, APP ECT, IAT sensors.

Are the values normal?

Go to Step 7

Go to applicable chart

Turn ON the ignition.
Use a scan tool to turn the fuel pump ON.
Listen for the fuel pump to turn ON.

Does the fuel pump turn ON when commanded?

Go to Step 8

Go to Fuel Pump Circuit Diagnosis

Turn OFF the ignition.
Install a fuel pressure gauge.
Use the scan tool in order to turn the fuel pump ON.

Is the fuel pressure within the specified value?

275-313 kPa (40-46 psi)

Go to Step 9

Go to Fuel System Diagnosis

Perform the ignition system check. Refer to Ignition System Check .
Repair as necessary.

Did you find and repair a problem?

Go to Step 13

Go to Step 10

Inspect all of the duct work between the Mass Air Flow (MAF) sensor and the throttle body for air leaks.
Inspect for a malfunctioning MAF sensor causing a no start or a stall after a start. If this condition is suspected use the following procedure:

2.1.	Disconnect the MAF sensor. The ECM will ignore the MAF sensor and default to the calculated air flow.

2.2.	If disconnecting the MAF sensor corrects the condition and the connections are OK, replace the MAF sensor.

Did you find and correct a problem?

Go to Step 13

Go to Step 11

Perform the following additional inspections:

•	Inspect for any fouled spark plugs. If the spark plugs are fouled, determine the cause of the fouling before replacing them.

•	Test for water or alcohol contaminated fuel. Refer to Alcohol/Contaminants-in-Fuel Diagnosis .

•	Check for a restricted exhaust. Refer to Restricted Exhaust System Check .

•	Check for an engine mechanical condition that would cause the engine not to start such as low compression or broken timing belt. Refer to Engine Compression Test in Engine Mechanical.

•	Correct the condition as necessary.

Did you find and repair a problem?

Go to Step 13

Go to Diagnostic Aids

Test the circuit for a short to ground.
Repair as necessary. Refer to Wiring Repairs in Wiring Systems.
Replace the fuse.

Is the action complete?

Go to Step 13

Using the scan tool, clear the DTC information.
Attempt to start the engine.

Does the engine start and continue to run?

Go to Step 14

Go to Step 2

Allow the engine to idle until the engine reaches the normal operating temperature.
Inspect for any DTCs with the scan tool.

Are any DTCs displayed?

Go to applicable DTC table

System OK