Mitsubishi Galant. Manual — part 603

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM(SRS)

52B-53

STEP 1. Check the side impact sensor (RH) line at the SRS-
ECU connector C-45 by backprobing.
(1)Do disconnect the side impact sensor (RH) connector D-09
(2)Connect the negative battery terminal.
(3)Turn the ignition switch to "ON" position.
(4)Measure the voltage between terminal 1 and the ground by

backprobing.

•

Voltage should be 9 volts or more.

(5)Check the continuity between terminal 3 and the ground by

backprobing.

•

Should be less than 2 ohm.

Q: Does the voltage meet the specifications or is the

resistance less than 2 ohm?
YES : Replace the side impact sensor (LH). Refer to

P.52B-

74

. Then go to Step 3.

NO : Go to Step 2.

AC003696AB

D-09 CONNECTOR
HARNESS SIDE VIEW

AC003697AC

D-09 CONNECTOR
HARNESS SIDE VIEW

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM(SRS)

52B-54

STEP 2. Check the harness wires between SRS-ECU
connector C-45 and side impact sensor (RH) connector D-
09.
NOTE: After inspecting intermediate connector D-18, inspect
the wiring harness. If the intermediate connector D-18 is
damaged, repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection

P.00E-2

. Then go to Step 3. If harness

wires are in good condition, go to Step 3. If any harness wires
between SRS-ECU connector C-45 and side impact sensor
(RH) connector D-09 are damaged, repair them or install the
sensor cable. Refer to

P.52B-74

. Then go to Step 3.

Q: Are the harness wires between SRS-ECU connector C-

45 and side impact sensor (RH) connector D-09 in good
condition?
YES : Go to Step 3.
NO : Repair them. Then go to Step 3.

STEP 3. Check for DTC.

Q: Is DTC 94 output?

YES : Replace the SRS-ECU. Refer to

P.52B-65

.

NO : This diagnosis is complete.(If no malfunctions are not

found in all steps, an intermittent malfunction is
suspected. Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points

−

How to

Cope with Intermittent Malfunction.)

AC003195AD

CONNECTOR: C-45

CENTER
REINFORCEMENT

SRS-ECU

AC003211AB

CONNECTOR: D-09

AC003212AB

CONNECTOR: D-18

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM(SRS)

52B-55

SRS WARNING LIGHT CHECK

M1524004300071

1. Check that the SRS warning light illuminates when the

ignition switch is in the "ON" position.

2. Check that it illuminates for approximately 7 seconds and

then goes out.

3. If not, check for diagnostic trouble codes.

AC003188AB

SRS WARNING LIGHT

SRS AIR BAG DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM(SRS)

52B-56

SYMPTOM PROCEDURES

SYMPTOM PROCEDURES

M1524010300058

INSPECTION PROCEDURE 1: Communication with Scan Tool MB991502 is not Possible with the SRS
System Only.

AC000828AB

SRS-ECU Power Supply Circuit