Dodge Viper SRT-10 (ZB). Manual - part 446

TEST

ACTION

APPLICABILITY

Turn the ignition off.
Verify that the Refrigerant System is properly charged per Service Procedure.
Is the Refrigerant System properly charged?

All

Yes

→ Go To 5

→ Properly charge the Refrigerant System per Service Information.

Perform BODY VERIFICATION TEST - VER 1.

Turn the ignition off.
Verify the High Pressure Cut-Off Switch per Service Information.
Is the High Pressure Cut-Off Switch OK?

All

Yes

→ Go To 6

→ Replace the High Pressure Cut-Off Switch.

Perform BODY VERIFICATION TEST - VER 1.

Turn the ignition off.
Verify the Low Pressure Switch operation per Service Information.
Is the Low Pressure Switch OK?

All

Yes

→ Go To 7

→ Replace the Low Pressure Switch.

Perform BODY VERIFICATION TEST - VER 1.

Ignition on, engine not running.
Connect a test light between the ground circuit and the A/C Clutch Relay Output
circuit.
With the DRBIII

t, actuate the A/C Clutch Relay.

Does the test light illuminate brightly on and off with the relay actuation?

All

Yes

→ Replace the A/C Clutch Coil.

Perform BODY VERIFICATION TEST - VER 1.

→ Go To 8

Turn the ignition off.
Disconnect the A/C Clutch harness connector.
NOTE: Check connectors - Clean/repair as necessary.
Measure the resistance between ground and the A/C Compressor Clutch ground
circuit in the A/C Clutch harness connector.
Is the resistance below 5.0 ohms?

All

Yes

→ Go To 9

→ Repair the open in the A/C Compressor Clutch ground circuit.

Perform BODY VERIFICATION TEST - VER 1.

Turn the ignition off.
Disconnect the A/C Clutch harness connector.
Remove the A/C Clutch Relay.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance of the (C3) A/C Clutch Relay Output circuit between the IPM
and the A/C Clutch Coil.
Is the resistance below 5.0 ohms?

All

Yes

→ Go To 10

→ Repair the open in the (C3) A/C Clutch Relay Output circuit.

Perform BODY VERIFICATION TEST - VER 1.

191

DRIVEABILITY - GAS

*CHECKING A/C SYSTEM OPERATION WITH NO DTCS —

Continued

TEST

ACTION

APPLICABILITY

Turn the ignition off.
Remove the A/C Clutch Relay.
Note: Check connectors - Clean/repair as necessary.
Measure the voltage of the Fused B+ circuit at the A/C Clutch Relay connector.
Is the voltage above 11.0 volts?

All

Yes

→ Go To 11

→ Repair the open in the Fused B+ circuit. The open may be in the

IMP.
Perform BODY VERIFICATION TEST - VER 1.

If there are no possible causes remaining, view repair.

All

Repair

Replace the A/C Clutch Relay.
Perform BODY VERIFICATION TEST - VER 1.

Ignition on, engine not running.
With the DRBIII

t in the HVAC, under the Monitors screen, read the A/C Select

Switch state.
While monitoring the DRBIII

t screen, turn the A/C switch on and off a few times.

Does the A/C Select State change on the HVAC Monitors screen.

All

Yes

→ Check for any related TSBs. Replace and program the PCM in

accordance with the Service Information as long as no BUS
problems exist.
Perform BODY VERIFICATION TEST - VER 1.

→ Replace the A/C-Heater Control module.

Perform BODY VERIFICATION TEST - VER 1.

192

DRIVEABILITY - GAS

*CHECKING A/C SYSTEM OPERATION WITH NO DTCS —

Continued

Symptom:

*CHECKING CHARGING SYSTEM OPERATION WITH NO DTCS

POSSIBLE CAUSES

GENERATOR BELT CONDITION

DTC RESET

WIRE HARNESS INSPECTION

RESISTANCE IN THE BATTERY POSITIVE CIRCUIT

(K125) GENERATOR FIELD SOURCE CIRCUIT OPEN

GENERATOR FIELD COIL HIGH RESISTANCE

(K20) GEN FIELD CONTROL CIRCUIT OPEN

RESISTANCE IN THE GENERATOR GROUND

PCM

TEST

ACTION

APPLICABILITY

NOTE: Verify that the Battery is able to pass a load test before continuing.
Ignition on, engine not running.
With the DRBIII

t, read the Battery voltage and record the results.

Measure Battery voltage between the Battery Positive and Negative Terminals and
record the results.
Compare the two voltage readings.
Is the voltage difference less than one volt?

All

Yes

→ Go To 2

→ Go To 8

Ignition on, engine not running.
Measure the 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 of a volt?

All

Yes

→ Repair the excessive resistance in the Battery Positive circuit

between the Generator and Battery .
Perform POWERTRAIN VERIFICATION TEST VER - 3.

→ Go To 3

Ignition on, engine not running.
Record all DTCs 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.

Measure the voltage of the (K125) Generator Field Source circuit by backprobing the
back of Generator Field harness connector.
Is the voltage above 10.0 volts?

All

Yes

→ Go To 4

→ Repair the (K125) Generator Field Source circuit for an open or

short to ground.
Perform POWERTRAIN VERIFICATION TEST VER - 3.

193

DRIVEABILITY - GAS

TEST

ACTION

APPLICABILITY

Start the engine.
Warm the engine to operating temperature.
Caution: Ensure all wires are clear of the engine’s moving parts.
Measure the voltage between the Generator case and Battery Negative Post.
Is the voltage above 0.1 of a volt?

All

Yes

→ Repair the excessive resistance in the Generator Ground circuit

between the Generator Case and Battery Ground side.
Perform POWERTRAIN VERIFICATION TEST VER - 3.

→ Go To 5

Turn the ignition off.
Disconnect the Generator Field harness connector at back of the Generator.
Measure resistance across the Generator Field Terminals at the Generator.
Is the resistance above 15 ohms?

All

Yes

→ Replace or repair the Generator as necessary.

Perform POWERTRAIN VERIFICATION TEST VER - 3.

→ Go To 6

Disconnect the PCM harness connectors.
Measure the resistance of the (K20) Generator Field Driver circuit between the PCM
harness connector and the Generator harness connector.
Is the resistance below 5.0 ohms?

All

Yes

→ Go To 7

→ Repair the open in the (K20) Gen Field Control circuit.

Perform POWERTRAIN VERIFICATION TEST VER - 3.

NOTE: Before continuing, check the PCM harness connector terminals for
corrosion, damage, or terminal push out. Repair as necessary.
Using the schematics as a guide, inspect the wire harness and connectors. Pay
particular attention to all Power and Ground circuits.
If there are no possible causes remaining, view repair.

All

Repair

Replace and program the Powertrain Control Module per Service
Information.
Perform POWERTRAIN VERIFICATION TEST VER - 3.

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

→ Go To 9

→ Repair as necessary.

Perform POWERTRAIN VERIFICATION TEST VER - 3.

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 DTCs.

Are there any

9Charging System9 Trouble Codes?

All

Yes

→ Refer to Symptom list for the related Charging DTCs.

Perform POWERTRAIN VERIFICATION TEST VER - 3.

→ Go To 10

194

DRIVEABILITY - GAS

*CHECKING CHARGING SYSTEM OPERATION WITH NO DTCS —

Continued

Content .. 444 445 446 447 ..