Battery
The battery is a 12-volt DC source connected in a negative ground system. The battery case is sealed with 2 vents to release gases. The battery has 3 main functions
- Engine cranking power source
- Voltage stabilizer for the electrical system
- Temporary power source when the electrical loads exceed the generator output current
Refer to BATTERY, MOUNTING AND CABLES article.
Special Tools Illustration Tool Name Tool Number 73III Automotive Meter 105-R0057 or equivalent SABRE Premium Battery and Electrical System Tester 010-00736 or equivalent Vehicle Communication Module (VCM) and Integrated Diagnostic System (IDS) software with appropriate hardware, or equivalent scan tool
Scheme 9
Pinpoint Tests
| CAUTION | Electronic modules are sensitive to electrostatic discharge. If exposed to these charges, damage can result. |
Refer to Inspection and Verification , the DTC Chart and the Symptom Chart for direction to the appropriate pinpoint test.
Generator On-Vehicle Tests
| CAUTION | To prevent damage to the generator, do not make the jumper wire connections except as directed. |
| CAUTION | Do not allow any metal object to come in contact with the housing and the internal diode cooling fins with the key in the ON or OFF positions. A short circuit may result and burn out the diodes. |
Note. Battery posts and cable clamps must be clean and tight for accurate meter indications.
Note. Refer to the battery tester manual for complete directions for testing the charging system.
- Turn off all of the lamps and the electrical components.
- Place the transmission in NEUTRAL and apply the parking brake.
- Carry out the Load Test and No Load Test according to the following component tests