DIAGNOSIS SYSTEM (IPDM E/R)WW-19
< SYSTEM DESCRIPTION >
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Concept of auto active test
IPDM E/R starts the auto active test with the door
switch signals transmitted by BCM via CAN communica-
tion. Therefore, the CAN communication line between IPDM E/R and BCM is considered normal if the auto
active test starts successfully.
The auto active test facilitates troubleshooting if any systems controlled by IPDM E/R cannot be operated.
Diagnosis chart in auto active test
5 Headlamp LO for 10 seconds →HI ON ⇔ OFF 5 times
6 A/C compressor (magnet clutch) ON ⇔ OFF 5 times
Operation
sequence Inspection location Operation
JMMIA0492GB
Symptom Inspection contents Possible cause
Rear window defogger does not operate Perform auto active test.
Does the rear window defog-
ger operate?YES BCM signal input circuit
NO Rear window defogger
Rear window defogger
ground circuit
Harness or connector be- tween IPDM E/R and rear
window defogger
IPDM E/R
Any of the following components do not operate
Parking lamp
License plate lamp
Tail lamp
Side marker lamp
Front fog lamp
Headlamp (HI, LO)
Front wiper (HI, LO) Perform auto active test.
Does the applicable system
operate?YES BCM signal input circuit
NO Lamp or motor
Lamp or motor ground cir-
cuit
Harness or connector be- tween IPDM E/R and appli-
cable system
IPDM E/R
A/C compressor does not operate Perform auto active test.
Does the magnet clutch oper-
ate?YES
A/C auto amp. signal input
circuit
CAN communication signal
between A/C auto amp. and
ECM
CAN communication signal
between ECM and IPDM E/
R
NO Magnet clutch
Harness or connector be-
tween IPDM E/R and mag-
net clutch
IPDM E/R
Revision: 2010 May2011 QX56
