Starter battery relay control short circuit to ground.
â–¶ How to fix
• Check wiring (to starter battery relay) • Check connectors (to starter battery relay) • Check starter battery relay • Measure the relay voltage between signal and ground.
What you'll see
No driver-visible symptom recorded.
System reaction
The starter battery will either not be connected at engine start or will not be recharged after supporting engine start.
Diagnostic depth
Detection
Impermissible signal from the starter battery relay (located in the battery box). The sensor voltage level is too low during active diagnosis (while the diagnostic voltage is high). The starter battery relay is short circuit to ground.
Possible cause
• Defect wiring - short to ground • Defect connectors • Defect starter battery relay