Description
caution

First of all check damage of harness and terminals : Check terminals for contact resistance, corrosion and deformation.

When engine cranking is impossible although adjustment of inhibitor switch is normal, Inspect the starting system circuit.

Diagnostic Procedure
Starting system schematic diagram.
Start relay inspection (E/R fuse & relay box side)
1.

IG KEY "OFF", ENGINE "OFF"

2.

Remove the start relay from the E/R fuse & relay box.

3.

Measure the voltage of the start relay terminal. (Junction box side)

A.

Case 1 : In case that battery voltage is not supplied at terminal "30".

Repair IGN#2 fusible link (40A) blown on the U/H junction box.

If fusible link is blown again,

- Repair short to ground in power circuit between start relay connector terminal "87" and ST connector (E203) terminal "1".

- Repair short to ground in power circuit related with joint connector (EE201) circuit.

B.

Case 2 : In case that battery voltage is not supplied on the terminal "85" at IG KEY "START".

Repair start fuse (10A) blown on the I/P junction box.

Repair open in relay coil power circuit between I/P relay box connector (I/P-A) terminal "3" and start relay connector terminal "85".

4.

Measure the resistance between start relay connector terminal "86" and chassis ground.

A.

Specification : Continuity (Below 1.0 Ω)

B.

Case 1 : In case that the resistance is high or discontinuity.

Repair open and poor connection in ground circuit between start relay connector terminal "86" and chassis ground (G11, G14, G36).

In case of M/T,

- Inspect the ignition lock switch (RHD) and repair open in ground circuit between U/H junction box connector (U/H-U) terminal "24" and chassis ground [G11(LHD), G36(RHD)].

In case of A/T,

- Inspect the transaxle range switch and repair open in ground circuit between U/H junction box connector (U/H-U) terminal "24" and chassis ground (G14).

5.

Measure the resistance between start relay terminal "87" and chassis ground.

A.

Specification : 0.3~0.5Ω (20℃) (Pull in and Hold in coil resistance of the starter)

B.

Case 1 : In case that the resistance is high or discontinuity.

Measure the resistance between start relay terminal "87" and ST terminal (E203) "1".

If there is continuity, Replace the starter. (Magnetic resistance of the starter is too high.)

If there is discontinuity, Repair open in ST signal circuit between start relay terminal "87" and ST terminal (E203) "1".

C.

Case 2 : In case that all terminals (Junction box side) of the start relay are normal.

Go to "Start relay inspection" procedure.

Яндекс.Метрика