SAAB WIS ONLINE

DTC P1707 AT AWD SOLENOID VALVE CIRCUIT MALFUNCTION

DTC P1707 AT AWD SOLENOID VALVE CIRCUIT MALFUNCTION

DIAGNOSIS:

The output signal circuit of transfer duty solenoid is open or shorted.

TROUBLE SYMPTOM:


• Excessive tight corner “braking”.

• Front wheel slips on the slippery road.


WIRING DIAGRAM:


CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION.

Turn the ignition switch to OFF.

Disconnect the connector from TCM and transmission.

Measure the resistance of harness between TCM and transmission connector.

Connector & terminal

(B56) No. 4 — (B11) No. 8:

Is the resistance less than 1 Ω

Yes


No

Repair the open circuit in harness between TCM and transmission connector.


CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION.

Measure the resistance harness connector between TCM and chassis ground.

Connector & terminal

(B56) No. 4 — Chassis ground:

Is the resistance more than 1 MΩ?

Yes


No

Repair the short circuit in harness between TCM and transmission connector.


CHECK TRANSFER DUTY SOLENOID.

Measure the resistance between transmission connector and transmission terminals.

Connector & terminal

(T4) No. 8 — No. 20:

Is the resistance 2.0 — 6.0 Ω?

Yes


No


CHECK TRANSFER DUTY SOLENOID (IN TRANSMISSION).

Lift-up the vehicle and place rigid racks.

Note

Raise all wheels off ground.


Drain the automatic transmission fluid.

Important

Do not drain the automatic transmission fluid until it cools down.


Remove the extension case and disconnect connector from transfer duty solenoid.

Measure the resistance between transfer duty solenoid connector and transmission ground.

Connector & terminal

(AT12) No. 5 — Transmission ground:

Is the resistance 2.0 — 6.0 Ω?

Yes


No

Replace the control valve body.


CHECK HARNESS CONNECTOR BETWEEN TRANSFER DUTY SOLENOID AND TRANSMISSION.

Measure the resistance of harness between transfer duty solenoid and transmission connector.

Connector & terminal

(T4) No. 8 — (AT12) No. 5:

Is the resistance less than 1 Ω?

Yes


No

Repair the open circuit in harness between transfer duty solenoid and transmission connector.


CHECK HARNESS CONNECTOR BETWEEN TRANSFER DUTY SOLENOID AND TRANSMISSION.

Measure the resistance of harness between transmission connector and transmission ground.

Connector & terminal

(T4) No. 8 — Transmission ground:

Is the resistance more than 1 MΩ?

Yes

Even if the POWER indicator blinks, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the cause. Repair the harness or contact in transfer duty solenoid and transmission.


No

Repair the short circuit in harness between transfer duty solenoid and transmission connector.