Diagnostics: Other Subaru Impreza GD/GC/GG

CHECK

Check the following items when problem has occurred.

Note. Use copies of this page for interviewing customers.

Check List For Customers Interview. Scheme 779

CAUTION

1. Supplemental Restraint System "AIRBAG" AIRBAG system wiring harness is routed near the transmission control module (TCM). CAUTION: All AIRBAG system wiring harness and connectors are colored yellow. Do not use electrical test equipment on these circuit. Be careful not to damage AIRBAG system wiring harness when performing diagnostics and servicing the TCM.
2. Measurement When measuring voltage and resistance of the ECM, TCM or each sensor, use a tapered pin with a diameter of less than 0.64 mm (0.025 in) in order to avoid poor contact. Do not insert the pin more than 5 mm (0.20 in).

BATTERY

Measure battery voltage and specific gravity of electrolyte.

Standard voltage: 12V or more

Specific gravity: Above 1.260

ATF LEVEL

Make sure that ATF level is in the specification.

Checking ATF Level. Scheme 780

FRONT DIFFERENTIAL OIL LEVEL

Make sure that front differential oil level is in the specification.

Checking Front Differential Oil Level. Scheme 781

NOTE

For information about the data link connector. See SELF-DIAGNOSTIC SYSTEM .

SUBARU SELECT MONITOR

Note. For detailed operation procedure, refer to the SUBARU SELECT MONITOR OPERATION MANUAL. For details concerning diagnostic trouble codes. See LIST OF DIAGNOSTIC TROUBLE CODE .

Scheme 782

Scheme 783

Scheme 784

Scheme 785

1. Prepare Subaru Select Monitor kit. (Scheme 782): Identifying Subaru Select Monitor kit
2. Connect diagnosis cable to Subaru Select Monitor.
3. Insert cartridge into Subaru Select Monitor. (Scheme 783): Inserting Cartridge Into Subaru Select Monitor
4. Connect Subaru Select Monitor to data link connector. Data link connector located in the lower portion of the instrument panel (on the driver's side). (Scheme 784): Locating Data Link Connector Connect diagnosis cable to data link connector. CAUTION: Do not connect scan tools except for Subaru Select Monitor and OBD-II general scan tool.
5. Turn ignition switch to ON (engine OFF) and Subaru Select Monitor switch to ON. (Scheme 785): Locating Power Switch For Subaru Select Monitor
6. On the [Main Menu] display screen, select the {Each System Check} and press the [YES] key.
7. On the [System Selection Menu] display screen, select the {Engine Control System} and press the [YES] key.
8. Press the [YES] key after displayed the information of engine type.
9. On the [Transmission Diagnosis] display screen, select the {Diagnostic Code(s) Display} and press the [YES] key.
10. On the [Diagnostic Code(s) Display] display screen, select the {Current Diagnostic Code(s)} or {History Diagnostic Code(s)} and press the [YES] key.

Scheme 786

1. On the [Main Menu] display screen, select the {Each System Check} and press the [YES] key.
2. On the [System Selection Menu] display screen, select the {Transmission Control System} and press the [YES] key.
3. Press the [YES] key after displayed the information of transmission type.
4. On the [Transmission Diagnosis] display screen, select the {Current Data Display & Save} and press the [YES] key.
5. On the [Data Display Menu] display screen, select the {Data Display} and press the [YES] key.
6. Using the scroll key, move the display screen up or down until the desired data is shown. A list of the support data is shown in the following table. (Scheme 786): Supported Data List

CLEAR MEMORY MODE

1. On the [Main Menu] display screen, select the {2. Each System Check} and press the [YES] key.
2. On the [System Selection Menu] display screen, select the {Transmission Control System} and press the [YES] key.
3. Press the [YES] key after displayed the information of engine type.
4. On the [Transmission Diagnosis] display screen, select the {Clear Memory} and press the [YES] key.
5. When the `Done' and `Turn Ignition Switch OFF' are shown on the display screen, turn the Subaru Select Monitor and ignition switch to OFF.

Reading Diagnostic Trouble Codes With AT Oil Temp Warning Light. Scheme 787

The AT OIL TEMP warning light flashes the code corresponding to the faulty part.

The long segment (1.2 sec on) indicates a "ten" and the short segment (0.2 sec on) signifies a "One".

Identifying AT Oil Temp Warning Light Function. Scheme 788

WITH SUBARU SELECT MONITOR

For information about how to obtain and understand trouble codes. See OPERATION - SUBARU SELECT MONITOR .

WITHOUT SUBARU SELECT MONITOR

Current trouble codes shown on the display are cleared by turning the ignition switch OFF after conducting on-board diagnostics operation. Previous trouble codes, however, cannot be cleared since they are stored in the TCM memory which is operating on the back-up power supply. These trouble codes can be cleared by removing the specified fuse (located under the light or left lower position of the instrument panel).

CLEAR MEMORY

1. Removal of No. 4 fuse (for at least one minute)

1. The No. 4 fuse is located in the line to the memory back-up power supply of the TCM. Removal of this fuse clears the previous trouble codes stored in the TCM memory.
2. Be sure to remove the No. 4 fuse for at least the specified length of time. Otherwise, trouble codes may not be cleared.

For information about how to clear trouble codes with Subaru select monitor. See CLEAR MEMORY MODE - SUBARU SELECT MONITOR .