Scan Tool Testing and Procedures

SDT Function (4WD)

Function
SDT can display each diagnostic item using the diagnostic test modes shown following.





DTC Check Mode

Operation Procedure
1) Connect "SDT".
2) With engine at idle, touch "DTC check".
Display shows malfunction experienced since the last erasing operation.

NOTE:
The details for "TIME" are as follows:
^ "0": Error currently detected with transfer control unit.
^ Except for "0": Error detected in the past and memorized with transfer control unit.
Detects frequency of driving after DTC occurs (frequency of turning ignition switch "ON/OFF").

How to Erase DTC Check Results
1) Perform applicable inspection of malfunctioning item and then repair or replace.
2) Start engine and select "DTC check" mode for "4WD" with SDT.
3) Touch "Clear" on SDT screen to erase DTC memory.

CAUTION:
If memory cannot be erased, perform applicable diagnosis.

SELF-DIAGNOSTIC PROCEDURE (WITHOUT SDT)

Description
If the engine starts when there is something wrong with the 4WD system, the 4WD warning lamp turns ON or flickers in the combination meter. When the system functions properly, the warning lamp turns ON when the ignition switch is turned to "ON", and it turns OFF after engine starts. To locate the cause of a problem, start the self-diagnosis function. The 4WD warning lamp in the combination meter will indicate the problem area by flickering according to the DTC check. Transfer Control Unit

Diagnostic Procedure (A/T models)
1) Warm up engine.
2) Turn ignition switch "ON" and "OFF" at least twice, and then turn ignition switch "OFF".
3) Move A/T selector lever to "P" position.
4) Turn 4WD shift switch to "2WD" position.
5) Turn ignition switch "ON". (Do not start engine.)
6) 4WD warning lamp should turn ON.
If 4WD warning lamp does not turn ON. 4WD Warning Lamp Does Not Turn on
7) Move A/T selector lever to "R" position.
8) Turn 4WD shift switch to "2WD", "4H", and "2WD" in order.
9) Move A/T selector lever to "P" position.
10) Turn 4WD shift switch to "4H", "2WD" and "4H", in order.
11) Move A/T selector lever to "N" position.
12) Turn 4WD shift switch to "2WD" position.
13) Move A/T selector lever to "P" position.
14) Read the flickering of 4WD warning lamp.
Refer to "Judgement Self-diagnosis".

Diagnostic Procedure (M/T models)
1) Warm up engine.
2) Turn ignition switch "ON" and "OFF" at least twice, and then turn ignition switch "OFF".
3) Move M/T shift lever to neutral position.
4) Turn 4WD shift switch to "2WD" position.
5) Turn ignition switch "ON". (Do not start engine.)
6) 4WD warning lamp should turn ON.
If 4WD warning lamp does not turn ON. 4WD Warning Lamp Does Not Turn on
7) Move M/T shift lever to any position other than neutral.
8) Turn 4WD shift switch to "2WD", "4H", and "2WD" in order.
9) Move M/T shift lever to neutral position.
10) Turn 4WD shift switch to "4H", "2WD" and "4H", in order.
11) Move M/T shift lever to any position other than neutral.
12) Turn 4WD shift switch to "2WD" position.
13) Move M/T shift lever to neutral position.
14) Read the flickering of 4WD warning lamp.
Refer to "Judgement Self-diagnosis".

Self-diagnosis example





Data List Mode

Operation Procedure
1) Connect "SDT."
2) Touch "Data list".

NOTE:
When malfunction is detected, SDT performs REAL-TIME DIAGNOSIS.
Also, any malfunction detected while in this mode will be displayed at real time.

Display Item List