Did you perform the Starting System Check ?

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Go to Step 2

Go to Starting System Check

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

Does the indicator stay on or flash continuously?

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Go to Step 15

Go to Step 3

Check the START circuit breaker in the underhood fuse block.

Is the circuit breaker open?

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Go to Step 4

Go to Step 5

Repair short to ground on CKT 6 (PPL) or the START1/START2 relay contacts circuit within the underhood fuse block.

Is the repair complete?

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Go to Step 37

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1. Check the battery and battery cables.
2. Perform the battery load test. Refer to Battery Not Operating Properly .

Are the battery and battery cables OK?

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Go to Step 7

Go to Step 6

Replace the battery or battery cable. Refer to Battery Cable or Battery Replacement .

Is the repair complete?

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Go to Step 37

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1. Disconnect the CKT 6 (PPL) lead from the starter solenoid.
2. Remove the INJR1 and INJR2 fuses from the underhood fuse block to prevent the engine from starting.
3. Using a J 39200 digital multimeter (DMM), measure the voltage from the starter solenoid terminal S to ground while cranking the engine.

Is the voltage above the specified value?

8 Volts

Go to Step 8

Go to Step 9

1. Check that the starter lead connection at the starter solenoid terminal S is clean and tight.
2. If OK, replace the starter. Refer to Starter Motor Replacement .

Is the repair complete?

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Go to Step 37

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1. Using a DMM, measure the voltage from the underhood fuse block connector C3 terminal F3 to ground.
2. Turn the ignition switch to the START position.

Is the measured voltage greater than the specified value?

8 Volts

Go to Step 10

Go to Step 11

Repair open in CKT 6 (PPL).

Is the repair complete?

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Go to Step 37

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1. Turn the ignition switch OFF.
2. Reconnect the CKT 6 (PPL) lead to the starter solenoid S terminal.
3. Remove the START1 and START2 relays from the underhood fuse block.
4. Connect a test lamp between the underhood fuse block connector C3 terminal E3 and ground.
5. Make sure the gear selector is in PARK.
6. Turn the ignition switch to START.

Does the test lamp light?

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Go to Step 12

Go to Step 24

1. Turn the ignition OFF.
2. Connect a DMM set to DC volts scale between the underhood fuse block connector C2 terminal A2 and battery positive voltage (B+).
3. Turn the ignition switch to START.

Is the measured voltage in the specified range while the ignition is in START?

10-15V

Go to Step 17

Go to Step 13

1. Connect a scan tool to the data link connector (DLC).
2. Turn the ignition switch to ON.
3. Attempt to establish communication with the theft deterrent module (VTD).

Does the scan tool communicate with the module?

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Go to Step 14

Go to Step 15

1. Using the scan tool, select the theft deterrent module (VTD).
2. Select the data menu and monitor the Starter Relay Status output, as displayed on the scan tool.
3. Turn the ignition switch from ON to START, the back to ON.

Does the Starter Relay Status output on the scan tool change from OFF to ON and back?

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Go to Step 16

Go to Step 15

Diagnose the theft deterrent system. Refer to Diagnostic System Check - Theft Deterrent in Theft Deterrent.

Is the repair complete?

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Go to Step 37

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1. Check the theft deterrent module connector for poor terminal contact.
2. If OK, repair open or short to ground on CKT 625 (YEL/BLK).
3. Install the START1 and START2 relays back in the underhood fuse block.

Is the repair complete?

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Go to Step 37

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1. Turn the ignition switch OFF.
2. Install the original START1 relay in the underhood fuse block.
3. Replace the START2 relay with a known good relay having the same part number.
4. Turn the ignition switch to START.

Does the solenoid click?

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Go to Step 18

Go to Step 19

1. Check START2 relay socket for poor terminal contact.
2. If OK, the START2 relay (replaced in the previous step) is faulty.

Is the repair complete?

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Go to Step 37

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1. Turn the ignition switch OFF.
2. Install the original START2 relay in the underhood fuse block.
3. Replace the START1 relay with a known good relay having the same part number.
4. Turn the ignition switch to START.

Does the solenoid click?

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Go to Step 20

Go to Step 21

1. Check START1 relay socket for poor terminal contact.
2. If OK, the START1 relay (replaced in the previous step) is faulty.

Is the repair complete?

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Go to Step 37

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Using a DMM, check the underhood fuse block input terminal voltage.

Is the measured voltage in the specified range?

10-15V

Go to Step 23

Go to Step 22

Repair open or short to ground on the CKT 1 cables to the underhood fuse block.

Is the repair complete?

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Go to Step 37

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1. Make sure the cable connections to the underhood fuse block input terminal are clean and tight.
2. If OK, replace the underhood fuse block.

Is the repair complete?

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Go to Step 37

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1. Turn the ignition switch OFF.
2. Install the START1 and START2 relays (removed in step 10) back in the underhood fuse block.
3. Check the IGN SW fuse in the rear fuse block.

Is the fuse open?

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Go to Step 25

Go to Step 26

Repair short to ground on CKT 540 (ORN).

Is the repair complete?

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Go to Step 37

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1. Turn the ignition switch OFF.
2. Connect a scan tool to the data link connector (DLC).
3. Turn the ignition switch ON.
4. Attempt to establish communication with the dash integration module (DIM).

Does the scan tool communicate with the module?

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Go to Step 27

Go to Step 28

1. Using the scan tool, select the dash integration module (DIM).
2. Select the data inputs menu.
3. Monitor the Ignition Crank input, as displayed on the scan tool.
4. Turn the ignition switch to START.

Does the Ignition Crank input, displayed on the scan tool, turn on and off?

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Go to Step 30

Go to Step 28

1. Turn the ignition switch OFF.
2. Disconnect the ignition switch connectors C1 and C2.
3. Connect a test lamp from ignition switch connector C2 terminal A to ground.

Does the test lamp light?

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Go to Step 30

Go to Step 29

Repair open CKT 540 (ORN).

Is the repair complete?

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Go to Step 37

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1. Turn the ignition switch OFF.
2. If disconnected, reconnect the ignition switch connectors.
3. Disconnect the park/neutral position (PNP) switch connector C1.
4. Connect a DMM set to DC volts scale from PNP switch connector C1 terminal G to ground.
5. Turn the ignition switch to START.

Is the measured voltage in the specified range?

10-15V

Go to Step 34

Go to Step 31

1. Turn the ignition switch OFF.
2. Connect a fused jumper across PNP switch connector C1 terminals G and E.
3. Connect a DMM set to DC volts scale from underhood fuse block connector C3 terminal E3 to ground.
4. Turn the ignition switch to START.

Is the measured voltage in the specified range?

10-15V

Go to Step 33

Go to Step 32

Repair open or short to ground on CKT 269 (YEL).

Is the repair complete?

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Go to Step 37

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1. Check park/neutral position (PNP) switch connector C1 for poor terminal contact.
2. If OK, replace the PNP switch. Refer to Park/Neutral Position Switch Replacement in Automatic Transaxle - 4T80-E.

Is the repair complete?

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Go to Step 37

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1. Turn the ignition switch OFF.
2. Disconnect the ignition switch connectors.
3. Connect a DMM set to DC volts scale between the park/neutral position (PNP) switch connector C1 terminal G and ground.
4. Momentarily connect a fused jumper across ignition switch connector C2 terminals A and B.

Is the measured voltage in the specified range?

10-15V

Go to Step 36

Go to Step 35

Repair open or short to ground on CKT 5 (YEL).

Is the repair complete?

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Go to Step 37

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1. Check ignition switch connectors for poor terminal contact.
2. If OK, replace the ignition switch. Refer to Ignition and Start Switch Replacement in Instrument Panel, Gauges, and Console.

Is the repair complete?

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Go to Step 37

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1. Make sure any components removed during diagnosis are installed in place and that all connectors are connected.
2. Repeat the system check. Refer to Starting System Check .

Is the system check complete?

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System OK

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