Chrysler 2005 Crossfire SRT6 Service Manual page 850

8F - 38 STARTING SYSTEM
TESTING
COLD CRANKING TEST
For complete wiring diagrams, refer to Starting System in the Contents of Group 8W - Wiring Diagrams. The bat-
tery must be fully-charged and load-tested before proceeding. Refer to Battery in the Diagnosis and Testing section
of Group 8F - Engine Systems for the procedures. (Refer to 8 - ELECTRICAL/BATTERY SYSTEM/BATTERY -
DIAGNOSIS AND TESTING).
1. Connect a suitable volt-ampere tester (3) to the
battery terminals (1,2). See the instructions pro-
vided by the manufacturer of the volt-ampere tester
being used.
2. Fully engage the parking brake.
3. Place the automatic transmission gearshift selector
lever in the Park position or place the manual
transmission gearshift selector in the Neutral posi-
tion.
4. Verify that all lamps and accessories are turned off.
5. Prevent the engine from starting.
6. Rotate and hold the ignition switch in the Start
position. Note the cranking voltage and current
(amperage) draw readings shown on the volt-am-
pere tester.
a. If the voltage reads below 9.6 volts, refer to
Starter Motor in the Diagnosis and Testing
section of this group (Refer to 8 - ELECTRI-
CAL/STARTING/STARTER MOTOR - DIAGNOSIS AND TESTING). If the starter motor is OK, refer to
Engine Diagnosis in the Diagnosis and Testing section of Group 9 - Engine for further testing of the engine
(Refer to 9 - ENGINE - DIAGNOSIS AND TESTING). If the starter motor is not OK, replace the faulty starter
motor.
b. If the voltage reads above 9.6 volts and the current (amperage) draw reads below specifications, refer to
Feed Circuit Test in this section.
c. If the voltage reads 12.5 volts or greater and the starter motor does not turn, refer to Control Circuit Test-
ing in this section.
d. If the voltage reads 12.5 volts or greater and the starter motor turns very slowly, refer to Feed Circuit Test
in this section.
Note: A cold engine will increase the starter current (amperage) draw reading, and reduce the battery volt-
age reading.
FEED CIRCUIT TEST
The starter feed circuit test (voltage drop method) will determine if there is excessive resistance in the high-amper-
age feed circuit. For complete wiring diagrams, refer to Starting System in the Contents of Group 8W - Wiring
Diagrams. (Refer to 8 - ELECTRICAL/WIRING DIAGRAM INFORMATION - DESCRIPTION).
When performing these tests, it is important to remember that the voltage drop is giving an indication of the resis-
tance between the two points at which the voltmeter probes are attached.
Example: When testing the resistance of the battery positive cable, touch the voltmeter leads to the battery positive
cable clamp and the cable connector at the starter solenoid. If you probe the battery positive terminal post and the
cable connector at the starter solenoid, you are reading the combined voltage drop in the battery positive cable
clamp-to-terminal post connection and the battery positive cable.
The following operation will require a voltmeter accurate to 1/10 (0.10) volt. Before performing the tests, be certain
that the following procedures are accomplished:
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