Specifications

T78
WARNING AND INDICATOR SYSTEM
Diagnostic procedure
DTC 04 Door switch on/off signal
STEP INSPECTION INDICATION ACTION
1 Open driver-side door. (Door switch
on.)
Close driver-side door, then go to next step.
Measure voltage at instrument cluster terminal 1J.
Is voltage 0 V?
• If as specified, replace instrument cluster.
• If not as specified, inspect following parts.
 Door switch
 Wiring harness (Instrument clusterdoor switch)
2 Open passenger-side door. (Door
switch on.)
Close passenger-side door, then go to next step.
Measure voltage at instrument cluster terminal 1I.
Is voltage 0 V?
• If as specified, replace instrument cluster.
• If not as specified, inspect following parts.
 Door switch
 Wiring harness (Instrument clusterdoor switch)
3 Open rear door on drivers side.
(Door switch on.)
Close rear door on drivers side, then go to next step.
Measure voltage at instrument cluster terminal 1I.
Is voltage 0 V?
• If as specified, replace instrument cluster.
• If not as specified, inspect following parts.
 Door switch
 Wiring harness (Instrument clusterdoor switch)
4 Open rear door on passengers
side. (Door switch on.)
Close rear door on passengers side, then go to next
step.
Measure voltage at instrument cluster terminal 1I.
Is voltage 0 V?
• If as specified, replace instrument cluster.
• If not as specified, inspect following parts.
 Door switch
 Wiring harness (Instrument clusterdoor switch)