BASIC INSPECTION[LA4AX-EL (CD4E)]

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STEP

INSPECTION

ACTION

1

Turn the ignition switch to the ON position.

Does the O/D OFF indicator light (illuminates/goes out) correspond to the O/D OFF switch position (ON/OFF)?

Yes

Go to the next step.

No

Perform malfunction diagnosis according to No.39 “O/D OFF INDICATOR LIGHT DOES NOT ILLUMINATE WHEN O/D OFF SWITCH IS TURNED TO ON”, or No.40 “O/D OFF INDICATOR LIGHT ILLUMINATES WHEN O/D OFF SWITCH IS NOT TURNED TO ON”.

2

Inspect the ATF color and condition.

(See AUTOMATIC TRANSAXLE FLUID (ATF) INSPECTION[LA4AX-EL (CD4E)].)

Is the ATF color and odor normal?

Yes

Go to the next step.

No

Repair or replace any malfunctioning parts.

3

Perform the line pressure test.

(See MECHANICAL SYSTEM TEST[LA4AX-EL (CD4E)].)

Is the line pressure normal?

Yes

Go to the next step.

No

Repair or replace any malfunctioning parts.

4

Perform the stall test.

(See MECHANICAL SYSTEM TEST[LA4AX-EL (CD4E)].)

Is the stall speed normal?

Yes

Go to the next step.

No

Repair or replace any malfunctioning parts.

5

Inspect the voltage at the following PCM terminals.

(See PCM INSPECTION[AJ (3.0L Duratec)].)

•  Throttle position sensor signal

•  Transaxle fluid temperature sensor signal

•  Speedometer signal

Are terminal voltages normal?

Yes

Perform the symptom troubleshooting.

No

Repair or replace any malfunctioning parts.

STEP	INSPECTION		ACTION
1	Turn the ignition switch to the ON position. Does the O/D OFF indicator light (illuminates/goes out) correspond to the O/D OFF switch position (ON/OFF)?	Yes	Go to the next step.
1		No	Perform malfunction diagnosis according to No.39 “O/D OFF INDICATOR LIGHT DOES NOT ILLUMINATE WHEN O/D OFF SWITCH IS TURNED TO ON”, or No.40 “O/D OFF INDICATOR LIGHT ILLUMINATES WHEN O/D OFF SWITCH IS NOT TURNED TO ON”.
2	Inspect the ATF color and condition. (See AUTOMATIC TRANSAXLE FLUID (ATF) INSPECTION[LA4AX-EL (CD4E)].) Is the ATF color and odor normal?	Yes	Go to the next step.
2		No	Repair or replace any malfunctioning parts.
3	Perform the line pressure test. (See MECHANICAL SYSTEM TEST[LA4AX-EL (CD4E)].) Is the line pressure normal?	Yes	Go to the next step.
3		No	Repair or replace any malfunctioning parts.
4	Perform the stall test. (See MECHANICAL SYSTEM TEST[LA4AX-EL (CD4E)].) Is the stall speed normal?	Yes	Go to the next step.
4		No	Repair or replace any malfunctioning parts.
5	Inspect the voltage at the following PCM terminals. (See PCM INSPECTION[AJ (3.0L Duratec)].) • Throttle position sensor signal • Transaxle fluid temperature sensor signal • Speedometer signal Are terminal voltages normal?	Yes	Perform the symptom troubleshooting.
5		No	Repair or replace any malfunctioning parts.