1. Place gear selector in the PARK position.
2. Turn the ignition switch to the START position.
3. Observe the SECURITY indicator.

Does the indicator stay on or flash continuously?

--

Refer to Diagnostic System Check Cell 133 in Electrical Diagnosis

Go to Step 2

Perform the battery load test. Refer to Battery Load Test .

Did the battery check as OK?

--

Go to Step 3

Go to Step 11

Check the battery cables and connections.

Are the battery cables and connections OK?

--

Go to Step 4

Go to Step 12

1. Remove the INJR Fuse from the Underhood Bussed Electrical Center (BEC) to prevent the engine from starting.
2. Turn the ignition switch to the START position.
3. Using a DMM, measure the voltage at the starter solenoid terminal S, CKT 6 (PPL) to ground.

Is the measured voltage greater than the specified value?

8 V

Go to Step 13

Go to Step 5

1. Disconnect CKT 6 (PPL) from the starter solenoid.
2. Turn the ignition switch to the START position.
3. Using a DMM, measure the voltage at the Underhood BEC connector C2 terminal B9, CKT 6 (PPL) to ground.

Is the measured voltage greater than the specified value?

8 V

Go to Step 14

Go to Step 6

1. Reconnect CKT 6 (PPL) to the starter solenoid.
2. Backprobe with a test lamp between Battery Positive Voltage (B+) and the PNP switch connector C1 terminal G, CKT 575 (YEL).
3. Place the gear selector lever in the PARK position.

Does the test lamp light?

--

Go to Step 7

Go to Step 15

Using a DMM, measure the voltage at connector C206 terminal A6, CKT 1063 (YEL) and ground.

Is the measured voltage greater than the specified value?

8 V

Go to Step 8

Go to Step 19

1. Turn the ignition switch to the START position.
2. Using a DMM, measure the voltage between the Rear BEC connector C4 terminal C2, CKT 5 (YEL) to ground with the ignition switch held in the START position.

Is the voltage greater than the specified value?

8 V

Go to Step 9

Go to Step 22

Using a DMM, measure the voltage between the Underhood BEC connector C3 terminal A10, CKT 806 (PPL) to ground with the ignition switch held in the START position.

Is the voltage greater than the specified value?

8 V

Go to Step 10

Go to Step 24

Check for an open in CKT 575 (YEL).

Is CKT 575 OK?

--

Go to Step 28

Go to Step 29

Replace the battery. Refer to Battery .

Is the battery replacement complete?

--

Go to Starter and Charging System Check

--

Repair the battery cable connections or replace battery cables as needed. Refer to Battery Cable .

Is the battery cable repair complete?

--

Go to Starter and Charging System Check

--

1. Check for poor connections at starter solenoid terminal S, CKT 6 (PPL).
2. Check for dirty or poor ground between starter and engine block. Refer to Starter Motor Inspection .
3. If OK, replace the starter. Refer to Starter Motor Replacement .

Is the starter repair completed?

--

Go to Starter and Charging System Check

--

Repair the open or short to ground in CKT 6 (PPL). Refer to Electrical Repairs Cell 5 in Electrical Diagnosis.

Is the circuit repair complete?

--

Go to Starter and Charging System Check

--

Backprobe with a test lamp between Battery Positive Voltage (B+) and the PNP switch connector C1 terminal E, CKT 625 (YEL/BLK).

Does the test lamp light?

--

Go to Step 16

Go to Step 17

Replace the park/neutral position (PNP) switch. Refer to 4T65-E Transaxle On-Vehicle Service .

Is the park/neutral position (PNP) switch replacement complete?

--

Go to Starter and Charging System Check

--

Check for an open in CKT 625 (YEL/BLK).

Is CKT 625 OK?

--

Go to Step 18

Go to Step 29

Replace the PCM. Refer to Powertrain Control Module Replacement/Programming .

Important:: The replacement PCM must be programmed. Refer to Powertrain Control Module Replacement/Programming .

Is the PCM replacement complete?

--

Go to Starter and Charging System Check

--

Check the Run/Crank Fuse in the Underhood BEC for an open.

Is the Run/Crank Fuse OK?

--

Go to Step 21

Go to Step 20

1. Repair the short to ground in CKT 5 (YEL) or CKT 1063 (YEL). Refer to Electrical Repairs Cell 5 in Electrical Diagnosis.
2. Replace the Run/Crank Fuse in the Underhood BEC. Refer to Electrical Repairs Cell 5 in Electrical Diagnosis.

Is the circuit repair and fuse replacement complete?

--

Go to Starter and Charging System Check

--

Check for an open in CKT 1063 (YEL).

Is CKT 1063 OK?

--

Go to Step 28

Go to Step 29

Check for an open in CKT 5 (YEL).

Is CKT 5 OK?

--

Go to Step 23

Go to Step 29

Replace the ignition switch. Refer to Ign & Key Alarm Switch Asm in Tilt Strg Col Unit Repair (SIR).

Is the ignition switch replacement complete?

--

Go to Starter and Charging System Check

--

Check the CRANK Fuse in the Rear BEC for an open.

Is the CRANK Fuse OK?

--

Go to Step 26

Go to Step 25

1. Repair the short to ground in CKT 806 (PPL). Refer to Electrical Repairs Cell 5 in Electrical Diagnosis.
2. Replace the CRANK Fuse in the Rear BEC. Refer to Electrical Repairs Cell 5 in Electrical Diagnosis.

Is the circuit repair and fuse replacement complete?

--

Go to Starter and Charging System Check

--

Check for an open in CKT 806 (PPL).

Is CKT 806 OK?

--

Go to Step 27

Go to Step 29

Replace the Rear Bussed Electrical Center (BEC).

Is the Rear BEC replacement complete?

--

Go to Starter and Charging System Check

--

Replace the Underhood Bussed Electrical Center (BEC).

Is the Underhood BEC replacement complete?

--

Go to Starter and Charging System Check

--

Repair the suspect circuit. Refer to Electrical Repairs Cell 5 in Electrical Diagnosis.

Is the circuit repair complete?

--

Go to Starter and Charging System Check

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