Many malfunctions in the electrical system are caused by poor harness(es) and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
Has a problem been found?
YES
Repair as necessary and go to "Verification of Vehicle Repair" procedure
NO
Go to "Charging System Inspection" procedure
Disconnect the battery (+) & (-) terminal cable from the battery, and wait at least one minutes.
Disconnect the SRSCM connector.
Connect the battery (+) & (-) terminal cable and start engine.
Measure the voltage between the terminal 23 of the SRS connector and body ground.
Specification : Approx. 10 ~ 16V
Is the measured voltage within specifications?
YES
Go to "Ground Circuit Inspection" procedure
NO
Check for open/short in power harness.
Repair as necessary and then go to "Verification of Vehicle Repair" procedure.
Disconnect the battery (+) & (-) terminal cable from the battery, and wait at least one minutes.
Disconnect the SRSCM connector.
Connect the battery negative(-) terminal.
Measure the resistance between the terminal 49 of the SRS connector and body ground.
Specification : Approx. 1Ω
Is the measured resistance within specifications?
YES
Substitute with a known-good SRSCM and check for proper operation.
If the problem is corrected,replace SRSCM and then go to "Verification of Vehicle Repair" procedure.
NO
Repair the ground condition.
Repair as necessary and then go to "Verification of Vehicle Repair" procedure.
Engine "ON", headight and heatwire "ON".
Measure voltage between the battery terminal (+) and (-) maintaining ENG. RPM 2,500RPM (idle) over 2 minutes.
Specification : Approx.10V ~ 16.5V
Is the measured voltage within specifications?
YES
Go to "Power Circuit Inspection" procedure.
NO
Check for fault in charging system and check for tension of alternator drive belt, ENG.idle rpm or open/short in harness from battery to alternator .
Repair as necessary and then go to "Verification of Vehicle Repair" procedure.