Dtc B1553: Can Communication Circuit Malfunction; Dtc B1556: Camshaft Position (Cmp) Sensor And/Or Its Circuit Malfunction - Suzuki Grand Vitara 2011 Manual

DTC B1553: CAN Communication Circuit Malfunction

DTC Detecting Condition and Trouble Area
HVAC control module receives error code from BCM continuously.
DTC Troubleshooting
Step
1 DTC check
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Check ECM and BCM for DTC.
Is there DTC(s)?

DTC B1556: Camshaft Position (CMP) Sensor and/or Its Circuit Malfunction

DTC Detecting Condition and Trouble Area
HVAC control module receives error code from BCM continuously.
DTC Troubleshooting
Step
1 DTC check
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Check ECM for DTC.
Is there DTC P0340?
DTC detecting condition
Action
DTC detecting condition
Action
Air Conditioning System:
Trouble area
• CAN communication circuit
• Steering angle sensor (if equipped)
• Keyless start control module (if
equipped)
• 4WD control module (if equipped)
• TCM (if equipped)
• Combination meter
• ABS/ESP® control module
• BCM
• HVAC control module
• ECM
Yes
Go to applicable DTC
diag. flow.
Trouble area
• CMP sensor circuit
• CMP sensor
• HVAC control module
Yes
Go to applicable DTC
diag. flow.
7B-60
S6JB0A7204026
No
Substitute a known-
good HVAC control
module and recheck.
S6JB0A7204027
No
Substitute a known-
good HVAC control
module and recheck.