Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collisions...
Other information:
DTC Description
DTC DETECTION LOGIC
ECM back up system does not function properly.
EEPROM (built-in microcomputer) system internal ECM does not function properly.
DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
P0603
ECM BACK UP/CIRCUIT
[Internal Control Module Keep Alive Memory (KAM) Error]
Diagnosis condition
Ignition switch ON
Signal (terminal)
—
Threshold
ECM back up system does not function properly
Diagnosis delay time
—
P062F
CONTROL MODULE
(Internal control module EEPROM error)
Diagnosis condition
Start engine and let it idle
Signal (terminal)
—
Threshold
EEPROM (built-in microcomputer) system internal ECM does not function properly
Diagnosis delay time
—
POSSIBLE CAUSEDTC P0603
Harness or connectors
[ECM power supply circuit is open or shorted...
Diagnosis Procedure
CHECK FUSIBLE LINKS
Check that the following fusible links are not blown:
Terminal Signal name Fusible link No. Capacity
1
Battery power supply
E
80 A
2
A
250 A
C
80 A
3
A
250 A
B
100 A
N
40 A
Is the fusible link blown?
YES>>
Replace the blown fusible link after repairing the affected circuit...