2006 DODGE RAM SRT-10 oil

9.(C3) A/C CLUTCH RELAY OUTPUT CIRCUIT OPEN
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 betweenthe IPM and the A/C Clutch Coil.
Is the resistance below 5.0 ohms?
Ye s>>
Go To 10
No>>
Repair the open in the (C3) A/C Clutch Relay Output circuit.
Perform BODY VERIFICATION TEST - VER 1.
10.(A17) FUSED B+ CIRCUIT OPEN
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?
Ye s>>
Go To 11
No>>
Repair the open in the Fused B+ circuit. The open may be in the IMP.
Perform BODY VERIFICATION TEST - VER 1.
11 .A/C CLUTCH RELAY
If there are no possible causes remaining, view repair.
Repair
Replace the A/C Clutch Relay.
Perform BODY VERIFICATION TEST - VER 1.
12.A/CSELECTSWITCHSTATUSINHVAC
Ignition on, engine not running.
With the scan tool in the HVAC, under the Monitors screen, read the A/C Select Switch state.
While monitoring the scan tool screen, turn the A/C switch on and off a few times.
Does the A/C Select State change on the HVAC Monitors screen.
Ye s>>
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.
No>>
Replace the A/C-Heater Control module.
Perform BODY VERIFICATION TEST - VER 1.

Possible Causes
GENERATOR BELT CONDITION
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
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
Diagnostic Test
1.TARGET CHARGING DIFFERS FROM ACTUAL CHARGING BY 1 VOLT
NOTE: Verify that the Battery is able to pass a load test before continuing.
Ignition on, engine not running.
With the scan tool, 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?
Ye s>>
Go To 2
No>>
Go To 8
2.RESISTANCE IN THE BATTERY POSITIVE CIRCUIT
Ignition on, engine not running.
Measure the voltage between the Generator B+ Terminal and the Battery+ Post.
CAUTION: Make sure all wires are clear of the engine’s moving parts.
Start the engine.
Is the voltage above 0.4 of a volt?
Ye s>>
Repair the excessive resistance in the Battery Positive circuit between the Generator and Battery.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No>>
Go To 3
3.(K125) GEN FIELD SOURCE CIRCUIT OPEN
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 scan tool, actuate the Generator Field Driver.
Measure the voltage of the (K125) Generator Field Source circuit by backprobing the back of Generator Field har-
ness connector.
Is the voltage above 10.0 volts?
Ye s>>
Go To 4
No>>
Repair the (K125) Generator Field Source circuit for an open or short to ground.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

4.RESISTANCE IN THE GENERATOR GROUND
Start the engine.
Warm the engine to operating temperature.
CAUTION: Make sure 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?
Ye s>>
Repair the excessive resistance in the Generator Ground circuit between the Generator Case and Bat-
tery Ground side.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No>>
Go To 5
5.GENERATOR FIELD COIL HIGH RESISTANCE
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?
Ye s>>
Replace or repair the Generator as necessary.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No>>
Go To 6
6.(K20) GEN FIELD CONTROL CIRCUIT OPEN
Disconnect the C3 PCM harness connector.
Measure the resistance of the (K20) Generator Field Driver circuit
between the C3 PCM harness connector and the Generator harness
connector.
Is the resistance below 5.0 ohms?
Ye s>>
Go To 7
No>>
Repair the open in the (K20) Gen Field Control circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to
9 - ENGINE - STANDARD PROCEDURE)
7.PCM
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.
Repair

page page
ENGINE - 3.7L - SERVICE INFORMATION
DESCRIPTION ............................. 2180
DIAGNOSIS AND TESTING
DIAGNOSIS AND TESTING - ENGINE
DIAGNOSIS - INTRODUCTION............. 2180
DIAGNOSIS AND TESTING - ENGINE
DIAGNOSIS - PERFORMANCE............. 2181
DIAGNOSIS AND TESTING - ENGINE
DIAGNOSIS - MECHANICAL............... 2183
DIAGNOSIS AND TESTING - ENGINE
DIAGNOSIS - LUBRICATION............... 2183
DIAGNOSIS AND TESTING - CYLINDER
COMPRESSION PRESSURE............... 2185
DIAGNOSIS AND TESTING - CYLINDER
COMBUSTION PRESSURE LEAKAGE...... 2185
STANDARD PROCEDURE
STANDARD PROCEDURE - REPAIR
DAMAGED OR WORN THREADS.......... 2186
STANDARD PROCEDURE - FORM-IN-
PLACE GASKETS AND SEALERS.......... 2186
STANDARD PROCEDURE - ENGINE
GASKET SURFACE PREPARATION........ 2187
REMOVAL ................................. 2188
INSTALLATION ............................. 2192
SPECIFICATIONS
SPECIFICATIONS - 3.7L ENGINE .......... 2195
TORQUE ................................. 2199
SPECIAL TOOLS ........................... 2202
ELEMENT - AIR CLEANER
REMOVAL ................................. 2206
INSTALLATION ............................. 2207
HEAD-CYLINDER-LEFT
DIAGNOSIS AND TESTING - CYLINDER HEAD
GASKET . . ............................... 2208
REMOVAL ................................. 2208
INSTALLATION ............................. 2211
CAMSHAFT
DESCRIPTION ............................. 2214
REMOVAL ................................. 2214
INSTALLATION ............................. 2215
COVER-CYLINDER HEAD
DESCRIPTION ............................. 2217
REMOVAL ................................. 2217
INSTALLATION ............................. 2218
VALVES & SEATS - INTAKE/EXHAUST
DESCRIPTION ............................. 2219
STANDARD PROCEDURE - REFACING ....... 2219
REMOVAL ................................. 2220
INSTALLATION ............................. 2221
ARM-VALVE ROCKER
DESCRIPTION ............................. 2222REMOVAL ................................. 2222
INSTALLATION ............................. 2222
SEALS-VALVE GUIDE
DESCRIPTION ............................. 2224
SPRINGS-VALVE
DESCRIPTION ............................. 2225
REMOVAL ................................. 2225
INSTALLATION ............................. 2225
HEAD-CYLINDER-RIGHT
DIAGNOSIS AND TESTING - HYDRAULIC
LASH ADJUSTER ......................... 2227
REMOVAL
REMOVAL RIGHT CYLINDER HEAD ........ 2227
INSTALLATION
INSTALLATION RIGHT CYLINDER HEAD . . . 2230
CAMSHAFT
DESCRIPTION ............................. 2234
REMOVAL ................................. 2234
INSTALLATION ............................. 2237
COVER - CYLINDER HEAD
REMOVAL ................................. 2239
INSTALLATION ............................. 2239
ROCKER ARM - VALVE
DESCRIPTION ............................. 2240
REMOVAL ................................. 2240
SEALS - VALVE GUIDE
DESCRIPTION ............................. 2241
SPRINGS - VALVE
DESCRIPTION ............................. 2242
REMOVAL ................................. 2242
INSTALLATION ............................. 2242
BLOCK-ENGINE
DESCRIPTION ............................. 2244
STANDARD PROCEDURE - CYLINDER BORE
HONING ................................. 2244
CLEANING ................................. 2244
INSPECTION............................... 2245
CRANKSHAFT
DESCRIPTION ............................. 2246
REMOVAL ................................. 2247
INSPECTION............................... 2248
INSTALLATION ............................. 2248
BEARINGS-CRANKSHAFT MAIN
STANDARD PROCEDURE
MAIN BEARING FITTING.................. 2251
SEAL-CRANKSHAFT OIL-FRONT
REMOVAL ................................. 2253
INSTALLATION ............................. 2254
SEAL-CRANKSHAFT OIL-REAR
DIAGNOSIS AND TESTING - REAR SEAL
AREA LEAKS ............................. 2255

REMOVAL ................................. 2255
INSTALLATION ............................. 2256
PLATE-FLEX
REMOVAL ................................. 2257
INSTALLATION ............................. 2257
ROD-PISTON AND CONNECTING
DESCRIPTION ............................. 2258
STANDARD PROCEDURE
CONNECTING ROD BEARING FITTING .... 2258
STANDARD PROCEDURE - PISTON
FITTING.................................. 2261
REMOVAL ................................. 2262
CLEANING ................................. 2262
INSPECTION ............................... 2262
INSTALLATION ............................. 2263
RINGS-PISTON
STANDARD PROCEDURE - PISTON RING
FITTING .................................. 2265
DAMPER-CRANKSHAFT
REMOVAL ................................. 2268
INSTALLATION ............................. 2269
COVER-STRUCTURAL
DESCRIPTION ............................. 2270
OPERATION ............................... 2270
REMOVAL ................................. 2270
INSTALLATION ............................. 2270
MOUNT-FRONT
REMOVAL ................................. 2271
INSTALLATION ............................. 2273
MOUNT-REAR
REMOVAL ................................. 2275
INSTALLATION ............................. 2275
LUBRICATION
DESCRIPTION ............................. 2276
OPERATION ............................... 2276
DIAGNOSIS AND TESTING
DIAGNOSIS AND TESTING - ENGINE OIL
LEAK.................................... 2278
DIAGNOSIS AND TESTING - CHECKING
ENGINE OIL PRESSURE.................. 2279
DIAGNOSIS AND TESTING - REAR SEAL
AREA LEAKS............................. 2279
PAN-ENGINE OIL
DESCRIPTION ............................. 2280
REMOVAL ................................. 2281
CLEANING ................................. 2282
INSPECTION ............................... 2282
INSTALLATION ............................. 2282SWITCH-OIL PRESSURE
DESCRIPTION ............................. 2284
OPERATION ............................... 2284
REMOVAL ................................. 2284
INSTALLATION ............................. 2284
PUMP-ENGINE OIL
REMOVAL ................................. 2285
DISASSEMBLY . ............................ 2285
INSPECTION............................... 2285
ASSEMBLY................................ 2287
INSTALLATION ............................. 2287
FILTER-ENGINE OIL
REMOVAL ................................. 2288
INSTALLATION ............................. 2288
OIL
STANDARD PROCEDURE - ENGINE OIL
SERVICE ................................. 2289
MANIFOLD-INTAKE
DESCRIPTION ............................. 2291
DIAGNOSIS AND TESTING - INTAKE
MANIFOLD LEAKS ........................ 2291
REMOVAL ................................. 2291
INSTALLATION ............................. 2292
MANIFOLD-EXHAUST
DESCRIPTION ............................. 2294
REMOVAL ................................. 2294
INSTALLATION ............................. 2295
VALVE TIMING
DESCRIPTION ............................. 2297
OPERATION ............................... 2297
STANDARD PROCEDURE
MEASURING TIMING CHAIN WEAR ........ 2298
SERVICE PROCEDURE - TIMING
VERIFICATION........................... 2298
SHAFT-BALANCE
REMOVAL ................................. 2302
INSTALLATION ............................. 2303
SHAFT-IDLER
REMOVAL ................................. 2304
INSTALLATION ............................. 2304
COVER-TIMING
REMOVAL ................................. 2305
INSTALLATION ............................. 2306
CHAIN AND SPROCKETS-TIMING
REMOVAL ................................. 2307
INSPECTION............................... 2309
INSTALLATION ............................. 2310

(Refer to 9 - ENGINE - DIAGNOSIS AND TESTING) - PERFORMANCE and (Refer to 9 - ENGINE - DIAGNOSIS
AND TESTING)—MECHANICAL for possible causes and corrections of malfunctions. (Refer to 14 - FUEL SYSTEM/
FUEL DELIVERY - DIAGNOSIS AND TESTING) and (Refer to 14 - FUEL SYSTEM/FUEL INJECTION - DIAGNO-
SIS AND TESTING) for the fuel system diagnosis.
Additional tests and diagnostic procedures may be necessary for specificengine malfunctions that can not be iso-
lated with the Service Diagnosis charts. Information concerning additional tests and diagnosis is provided within the
following diagnosis:
Cylinder Compression Pressure Test (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).
Cylinder Combustion Pressure LeakageTest (Refer to 9 - ENGINE - DIAGNOSISAND TESTING).
Engine Cylinder Head Gasket Failure Diagnosis (Refer to 9 - ENGINE/CYLINDER HEAD - DIAGNOSIS AND
TESTING).
Intake Manifold Leakage Diagnosis (Refer to 9 - ENGINE/MANIFOLDS/INTAKEMANIFOLD - DIAGNOSIS
AND TESTING).
DIAGNOSIS AND TESTING - ENGINE DIAGNOSIS - PERFORMANCE
CONDITION POSSIBLE CAUSE CORRECTION
ENGINE WILL NOT START 1. Weak battery 1. Charge or replace as necessary.
2. Corroded or loose battery
connections.2. Clean and tighten battery
connections. Apply a coat of light
mineral grease to the terminals.
3. Faulty starter. 3. (Refer to 8 - ELECTRICAL/
STARTING - DIAGNOSIS AND
TESTING).
4. Faulty coil or control unit. 4. (Refer to 8 - ELECTRICAL/
IGNITION CONTROL/IGNITION
COIL - REMOVAL).
5. Incorrect spark plug gap. 5. (Refer to 8 - ELECTRICAL/
IGNITION CONTROL/SPARK PLUG
- CLEANING).
6. Incorrect right bank cam timing. 6. Refer to engine timing in this
section.
7. Dirt or water in fuel system. 7. Clean system and replace fuel
filter.
8.Faulty fuel pump, relay or wiring. 8.Repair or replace as necessary.
9. Faulty cam or crank sensor 9. Refer to Ignition system.
ENGINE STALLS OR ROUGH IDLE 1. Vacuum leak. 1. Inspect intake manifold and
vacuum hoses, repair or replace as
necessary.
2. Faulty crank position sensor 2. Replace crank position sensor.
3. Faulty coil. 3. (Refer to 8 - ELECTRICAL/
IGNITION CONTROL/IGNITION
COIL - REMOVAL).
4. Incorrect cam timing. 4. (Refer to 9 - ENGINE/VALVE
TIMING - STANDARD
PROCEDURE).

CONDITION POSSIBLE CAUSE CORRECTION
1. ENGINE LOSS OF POWER 1. Dirty or incorrectly gapped spark
plugs.1. (Refer to 8 - ELECTRICAL/
IGNITION CONTROL/SPARK PLUG
- CLEANING).
2. Dirt or water in fuel system. 2. Clean system and replace fuel
filter.
3. Faulty fuel pump. 3. (Refer to 14 - FUEL SYSTEM/
FUEL DELIVERY/FUEL PUMP -
DIAGNOSIS AND TESTING).
4. Blown cylinder head gasket. 4. Replace cylinder head gasket.
5. Low compression. 5. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING), repair
as necessary.
6. Burned, warped or pitted valves. 6. Replace as necessary.
7. Plugged or restricted exhaust
system.7. Inspect and replace as
necessary.
8. Faulty coil. 8. (Refer to 8 - ELECTRICAL/
IGNITION CONTROL/IGNITION
COIL - REMOVAL).
9. Incorrect cam timing. 9. Refer to Engine TIming in this
section.
1. ENGINE MISSES ON
ACCELERATION1. Spark plugs dirty or incorrectly
gapped.1. (Refer to 8 - ELECTRICAL/
IGNITION CONTROL/SPARK PLUG
- CLEANING).
2. Dirt in fuel system. 2. Clean fuel system.
3. Burned, warped or pitted valves. 3. Replcae as necessary.
4. Faulty coil. 4. (Refer to 8 - ELECTRICAL/
IGNITION CONTROL/IGNITION
COIL - REMOVAL).
1. ENGINE MISSES AT HIGH
SPEED1. Spark plugs dirty or incorrectly
gapped.1. (Refer to 8 - ELECTRICAL/
IGNITION CONTROL/SPARK PLUG
- CLEANING).
2. Faulty coil. 2. (Refer to 8 - ELECTRICAL/
IGNITION CONTROL/IGNITION
COIL - REMOVAL).
3. Dirt or water in fuel system. 3. Clean system and replace fuel
filter.

DIAGNOSIS AND TESTING - ENGINE DIAGNOSIS - MECHANICAL
CONDITION POSSIBLE CAUSES CORRECTIONS
NOISY VALVES 1. High or low oil level in
crankcase.1. (Refer to LUBRICATION &
MAINTENANCE -
SPECIFICATIONS)
2. Thin or diluted oil. 2. Change oil and filter.
3. Low oil pressure. 3. Check oil pump, if Ok, check rod
and main bearings for excessive
wear.
4. Dirt in lash adjusters. 4. Replace as necessary.
5. Worn rocker arms. 5. Replace as necessary.
6. Worn lash adjusters 6. Replace as necessary.
7. Worn valve guides. 7. (Refer to 9 - ENGINE/CYLINDER
HEAD/INTAKE/EXHAUST VALVES
& SEATS - STANDARD
PROCEDURE)
8. Excessive runout of valve seats
on valve faces.8. (Refer to 9 - ENGINE/CYLINDER
HEAD/INTAKE/EXHAUST VALVES
& SEATS - STANDARD
PROCEDURE)
CONNECTING ROD NOISE 1. Insufficient oil supply. 1. (Refer to LUBRICATION&
MAINTENANCE -
SPECIFICATIONS)
2. Low oil pressure. 2. Check oil pump, if Ok, check rod
and main bearings for excessive
wear.
3. Thin or diluted oil. 3. Change oil and filter.
4. Excessive bearing clearance. 4. Replace as necessary.
5. Connecting rod journal
out-of-round.5. Service or replace crankshaft.
6. Misaligned connecting rods. 6. Replace bent connecting rods.
MAIN BEARING NOISE 1. Insufficient oil supply. 1. (Refer to LUBRICATION &
MAINTENANCE -
SPECIFICATIONS)
2. Low oil pressure. 2. Check oil pump, if Ok, check rod
and main bearings for excessive
wear.
3. Thin or diluted oil. 3. Change oil and filter.
4. Excessive bearing clearance. 4. Replace as necessary.
5. Excessive end play. 5. Check thrust washers for wear.
6. Crankshaft journal out-of round. 6. Service or replace crankshaft.
7. Loose flywheel or torque
converter.7. Tighten to correct torque
DIAGNOSIS AND TESTING - ENGINE DIAGNOSIS - LUBRICATION