Dodge Dakota (R1). Manual — part 824
TEST
ACTION
APPLICABILITY
8
Start the engine.
Warm the engine to operating temperature.
Caution: Ensure all wires are clear of the engine’s moving parts.
Measure voltage between the Generator case and Battery (-) Post.
Is the voltage above 0.1 volt?
All
Yes
→
Repair Generator Ground for high resistance, Generator Case to
Battery (-) side.
Perform POWERTRAIN VERIFICATION TEST VER - 3.
No
→
9
Turn ignition on, engine not running.
Measure voltage between the Generator B(+) Terminal and the Battery (+) Post.
Caution: Ensure all wires are clear of the engine’s moving parts.
Start the engine.
Is the voltage above 0.4 volt?
All
Yes
→
Repair the B(+) Circuit for high resistance between the Generator
and Battery.
Perform POWERTRAIN VERIFICATION TEST VER - 3.
No
→
10
Start the engine.
Warm the engine to operating temperature.
Caution: Ensure all wires are clear of the engine’s moving parts.
Measure voltage between the Generator case and Battery (-) Post.
Is the voltage above 0.1 volt?
All
Yes
→
Repair Generator Ground for high resistance, Generator Case to
Battery (-) side.
Perform POWERTRAIN VERIFICATION TEST VER - 3.
No
→
11
CAUTION: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE
PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
Start the engine.
Turn on all accessories, manually set engine speed to 1600 RPM.
With DRBIII
t, read Target Charging and Charging voltage.
Compare the two readings.
Is there more than a 1.0 volt difference?
All
Yes
→
No
→
Test Complete.
12
Ignition on, engine not running.
With the DRBIII
t, actuate the Generator Field.
Measure the voltage at both Generator Field Terminals.
Is the voltage below 3.0 volts at either Terminal?
All
Yes
→
No
→
Test Complete.
28
CHARGING
P1682-CHARGING SYSTEM VOLTAGE TOO LOW —
Continued
TEST
ACTION
APPLICABILITY
13
Ignition on, engine not running.
Record all DTC’s and freeze frame data, now erase Codes.
Carefully inspect all Connectors for corrosion or spread Terminals before continuing.
With the DRBIII
t actuate the Generator Field Driver Circuit.
Backprobe the Generator Field Source (+) Circuit at back of Generator.
Is the voltage above 10.0 volts?
All
Yes
→
No
→
Repair the open Generator Field Source (+) Circuit from Gener-
ator.
Perform POWERTRAIN VERIFICATION TEST VER - 3.
14
Turn the ignition off.
Disconnect the PCM harness connector(s).
Disconnect the Generator Field harness connector.
Measure the Generator Field Driver Circuit from PCM Connector to ground.
Is the resistance below 5.0 ohms?
All
Yes
→
Repair the Generator Field Driver Circuit shorted to ground.
Perform POWERTRAIN VERIFICATION TEST VER - 3.
No
→
15
Turn the ignition off.
Disconnect the PCM harness connectors.
Disconnect the Generator Field harness connector.
Note: Check Connectors - Clean/repair as necessary.
Measure the Generator Field Driver Circuit from PCM to Generator.
Is the resistance below 5.0 ohms?
All
Yes
→
No
→
Repair the open Generator Field Driver Circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 3.
16
Turn the ignition off.
Disconnect the PCM harness connector(s).
Disconnect the generator field harness connector.
Measure the Generator Field Source Circuit from PCM harness connector to ground.
Is the resistance below 5.0 ohms?
All
Yes
→
Repair the Generator Field Source Circuit shorted to ground and
replace PCM.
Perform POWERTRAIN VERIFICATION TEST VER - 3.
No
→
17
If there are no possible causes remaining, view repair.
All
Repair
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 3.
29
CHARGING
P1682-CHARGING SYSTEM VOLTAGE TOO LOW —
Continued
Symptom:
*CHECKING CHARGING SYSTEM OPERATION WITH NO DTC’S
PRESENT
POSSIBLE CAUSES
B (+) CIRCUIT HIGH RESISTANCE
GENERATOR GROUND HIGH RESISTANCE
B(+) CIRCUIT HIGH RESISTANCE (1.0 VOLT)
GENERATOR BELT OBSERVABLE PROBLEM
GENERATOR FIELD TERMINAL INTERMITTENT PROBLEM
TROUBLE CODES PRESENT
TROUBLE CODES PRESENT 2000 RPM
PCM (CHARGING SYSTEM NO CODE)
TEST
ACTION
APPLICABILITY
1
Turn the ignition off.
Note: Battery condition must be verified prior to this test.
Inspect the Generator Belt tension and condition.
Is the Generator Belt OK?
All
Yes
→
No
→
Repair as necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 3.
2
Start the engine.
Turn on all accessories.
Raise engine speed to 2000 RPM for 30 seconds then return to idle.
With the DRBIII
t, read DTC’s.
Are there any
9Charging System9 Trouble Codes?
All
Yes
→
Refer to Symptom list for problems related to Charging.
Perform POWERTRAIN VERIFICATION TEST VER - 3.
No
→
3
Ignition on, engine not running.
With the DRBIII
t, actuate the Generator Field.
Using a 12-volt test light, backprobe the Generator Field Driver Terminal at the back
of the Generator.
Note: The test light should blink On and Off every 1.4 seconds.
While monitoring the 12-volt test light, wiggle the Field Terminals back to the PCM
and ASD Relay.
Was there any interruption in the normal cycle of the test light?
All
Yes
→
Repair the wire where wiggling interrupted the voltage cycle.
Perform POWERTRAIN VERIFICATION TEST VER - 3.
No
→
30
CHARGING
TEST
ACTION
APPLICABILITY
4
Ignition on, engine not running.
With the DRBIII
t, read DTC’s.
Are there any
9Charging System9 trouble codes?
All
Yes
→
Refer to Symptom list for problems related to Charging.
Perform POWERTRAIN VERIFICATION TEST VER - 3.
No
→
5
Turn ignition on, engine not running.
Measure voltage between the Generator B(+) Terminal and the Battery (+) Post.
Caution: Ensure all wires are clear of the engine’s moving parts.
Start the engine.
Is the voltage above 0.4 volt?
All
Yes
→
Repair the B(+) Circuit for high resistance between the Generator
and Battery.
Perform POWERTRAIN VERIFICATION TEST VER - 3.
No
→
6
Start the engine.
Warm the engine to operating temperature.
Caution: Ensure all wires are clear of the engine’s moving parts.
Measure voltage between the Generator case and Battery (-) Post.
Is the voltage above 0.1 volt?
All
Yes
→
Repair Generator Ground for high resistance, Generator Case to
Battery (-) side.
Perform POWERTRAIN VERIFICATION TEST VER - 3.
No
→
7
Ignition on, engine not running.
With the DRBIII
t, read the Battery voltage and record the results.
Measure Battery voltage B(+) to B(-) Terminal and record the results.
Compare the two voltage readings.
Is the voltage difference less than one volt?
All
Yes
→
Test Complete.
No
→
8
Ignition on, engine not running.
With the DRBIII
t, read the Battery voltage and record the results.
Turn the Ignition off.
Disconnect the PCM harness connector(s).
Note: Check connectors - Clean/repair as necessary.
Ignition on, engine not running.
Measure the Fused B(+) at PCM Connector.
Is the voltage within one volt of the DRBIII
t recorded reading?
All
Yes
→
No
→
Repair the B(+) Circuit for high resistance between the PCM and
the Battery.
Perform POWERTRAIN VERIFICATION TEST VER - 3.
31
CHARGING
*CHECKING
CHARGING
SYSTEM
OPERATION
WITH
NO
DTC’S
PRESENT —
Continued
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