Engine Control Module (ECM) Diagnostic Trouble Codes - 10 of 13: Wiring Volvo XC90 I

CHECKING COMPONENTS AND WIRING

1. Ignition off HINT: The fuel temperature sensor is integrated in the fuel pressure sensor. Check the fuel pressure sensor connectors and connections for contact resistance and oxidation. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-476691-S27857399862012060500000) see «SIGNAL SPECIFICATION, ENGINE CONTROL MODULE (ECM)»(ref-476694-S30016655152012060500000) see «FUEL PRESSURE AND TEMPERATURE SENSOR, REPLACING»(ref-476695-S41579193842012060500000) see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

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1. Ignition off
2. Disconnect the engine control module (ECM). HINT: The fuel temperature sensor is integrated in the fuel pressure sensor. Check the signal cable with regard to short circuit to supply voltage. Check the signal cable with regard to open circuit. Take readings between control module terminal #A46 (#A46) and fuel pressure sensor terminal #2. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-476691-S27857399862012060500000) see «SIGNAL SPECIFICATION, ENGINE CONTROL MODULE (ECM)»(ref-476694-S30016655152012060500000) see «FUEL PRESSURE AND TEMPERATURE SENSOR, REPLACING»(ref-476695-S41579193842012060500000) see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

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1. Ignition off
2. Disconnect the engine control module (ECM). Check the signal cable. Check for a short-circuit to ground. Take readings between control module terminal #A71 (#B11) and fuel pressure sensor terminal #4. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-476691-S27857399862012060500000) see «SIGNAL SPECIFICATION, ENGINE CONTROL MODULE (ECM)»(ref-476694-S30016655152012060500000) see «FUEL PRESSURE AND TEMPERATURE SENSOR, REPLACING»(ref-476695-S41579193842012060500000) see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

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1. Ignition off
2. Disconnect the engine control module (ECM). Check the signal cable with regard to short circuit to supply voltage. Check the signal cable with regard to open circuit. Take readings between control module terminal #A71 (#B11) and fuel pressure sensor terminal #4. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-476691-S27857399862012060500000) see «SIGNAL SPECIFICATION, ENGINE CONTROL MODULE (ECM)»(ref-476694-S30016655152012060500000) see «FUEL PRESSURE AND TEMPERATURE SENSOR, REPLACING»(ref-476695-S41579193842012060500000) see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

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HINT: Engine cylinders are counted starting from the right-hand side of the vehicle, that is to say the cylinder farthest from the engine flywheel.

1. Bank 1 (cylinder row nearest the front): cylinders 1, 3, 5 and 7.
2. Bank 2 (cylinder row furthest to the rear, nearest the passenger compartment): cylinders 2, 4, 6, and 8.

HINT: If the engine does not start or if diagnostic trouble codes are stored for all the injectors, check the fuse. If the fuse is blown, check the circuit for short-circuit to supply voltage.

Scheme 348

1. Check the resistance of the injector to which the diagnostic trouble code refers.
2. Ignition off
3. Disconnect the engine control module (ECM). Check for contact resistance and oxidation on the injector connector to which the diagnostic trouble code refers. Check the power cable for open-circuit. Measure between the system relay and terminal #2 of the injector to which the diagnostic trouble code refers. Check the power cable to which the diagnostic trouble code refers for open-circuit as well as short-circuit to supply voltage and ground. Measure between: Control module terminals #A79 (#B19) and #1 for injector 1 (ECM-P020100). Control module terminals #A78 (#B18) and #1 for injector 2 (ECM-P020200). Control module terminals #A81 (#B21) and #1 for injector 3 (ECM-P020300). Control module terminals #A80 (#B20) and #1 for injector 4 (ECM-P020400). Control module terminals #A83 (#B23) and #1 for injector 5 (ECM-P020500). Control module terminals #A82 (#B22) and #1 for injector 6 (ECM-P020600). Control module terminals #A85 (#B25) and #1 for injector 7 (ECM-P020700). Control module terminals #A84 (#B24) and #1 for injector 8 (ECM-P020800). Activate the injector using the VCT2000 (or appropriate scan tool). The injector should make a clicking noise upon activation. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-476691-S27857399862012060500000) see «SIGNAL SPECIFICATION, ENGINE CONTROL MODULE (ECM)»(ref-476694-S30016655152012060500000) see «INJECTORS/PULSATION DAMPERS, REPLACING»(ref-476751-S09250993112012060500000) see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

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Check connector for contact resistance and oxidation.

Check the cable between engine control module (ECM) #B28 (#C28) and accelerator pedal position sensor #2 for interference.

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-476691-S27857399862012060500000)
2. see «SIGNAL SPECIFICATION, ENGINE CONTROL MODULE (ECM)»(ref-476694-S30016655152012060500000)
3. For replacing accelerator pedal position sensor: «ACCELERATOR PEDAL (AP), REPLACING»(ref-476780-S18973143032012060500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

Scheme 349

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Check the cable between engine control module (ECM) #B28 (#C28) and accelerator pedal position sensor #2 for short-circuit to voltage, also check for open circuit.

Check voltage feed to the accelerator pedal position sensor #1 for open circuit.

Check the ground cable from the accelerator pedal position sensor #3 for open circuit.

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-476691-S27857399862012060500000)
2. see «SIGNAL SPECIFICATION, ENGINE CONTROL MODULE (ECM)»(ref-476694-S30016655152012060500000)
3. For replacing accelerator pedal position sensor: «ACCELERATOR PEDAL (AP), REPLACING»(ref-476780-S18973143032012060500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

1. Continue Refer to «VERIFICATION»(ref-476781-S28020056602012060500000)

Check the cable between engine control module (ECM) #B28 (#C28) and accelerator pedal position sensor #2 for short-circuit to ground.

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-476691-S27857399862012060500000)
2. see «SIGNAL SPECIFICATION, ENGINE CONTROL MODULE (ECM)»(ref-476694-S30016655152012060500000)
3. For replacing accelerator pedal position sensor: «ACCELERATOR PEDAL (AP), REPLACING»(ref-476780-S18973143032012060500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

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HINT: Knock sensor 1detects knocking on cylinders 5, 6, 7 and 8.

HINT: Knock sensor 2 detects knocking on cylinders 1, 2, 3 and 4.

Scheme 350

1. Ignition off Check the connector of the relevant knock sensor for contact resistance and oxidation. Check that the relevant knock sensor is properly installed. Remedy as necessary. Other information see «KNOCK SENSOR (KS), REPLACING»(ref-476695-S22830905372012060500000) see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

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HINT: Knock sensor 1detects knocking on cylinders 5, 6, 7 and 8.

HINT: Knock sensor 2 detects knocking on cylinders 1, 2, 3 and 4.

1. Ignition off
2. Disconnect the engine control module (ECM). Check the signal cable (+) between the control module and the connector of the relevant knock sensor for short-circuit to ground. Measure between: Control module terminal #A43 (#A43) and knock sensor bank 1 terminal #2, (ECM-P032700). Control module terminal #A42 (#A42) and knock sensor bank 2 terminal #2, (ECM-P033200). Check the signal cable (-) between the control module and the connector of the relevant knock sensor for short-circuit to ground. Measure between: Control module terminal #A20 (#A20) and knock sensor bank 1 terminal #1, (ECM-P032700). Control module terminal #A19 (#A19) and knock sensor bank 2 terminal #1, (ECM-P033200). Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-476691-S27857399862012060500000) see «SIGNAL SPECIFICATION, ENGINE CONTROL MODULE (ECM)»(ref-476694-S30016655152012060500000) see «KNOCK SENSOR (KS), REPLACING»(ref-476695-S22830905372012060500000) see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

1. Continue Refer to «VERIFICATION»(ref-476781-S32619269342012060500000)

HINT: Knock sensor 1detects knocking on cylinders 5, 6, 7 and 8.

HINT: Knock sensor 2 detects knocking on cylinders 1, 2, 3 and 4.

1. Ignition off Check the connector of the knock sensor to which the diagnostic trouble code refers for contact resistance and oxidation. Disconnect the engine control module (ECM). Check the signal cable (+) between the control module and the connector of the knock sensor to which the diagnostic trouble code refers for open-circuit and short-circuit to supply voltage. Measure between: Control module terminal #A43 (#A43) and knock sensor bank 1 terminal #2, (ECM-P032800). Control module terminal #A42 (#A42) and knock sensor bank 2 terminal #2, (ECM-P033300). Check the signal cable (-) between the control module and the connector of the knock sensor to which the diagnostic trouble code refers for open-circuit and short-circuit to supply voltage. Measure between: Control module terminal #A20 (#A20) and knock sensor bank 1 terminal #1, (ECM-P032800). Control module terminal #A19 (#A19) and knock sensor bank 2 terminal #1, (ECM-P033300). Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-476691-S27857399862012060500000) see «SIGNAL SPECIFICATION, ENGINE CONTROL MODULE (ECM)»(ref-476694-S30016655152012060500000) see «KNOCK SENSOR (KS), REPLACING»(ref-476695-S22830905372012060500000) see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

1. Continue Refer to «VERIFICATION»(ref-476781-S41069306642012060500000)

1. Ignition off Check the engine speed sensor connections for contact resistance and oxidation. Check that the engine speed sensor is properly installed and in the correct position. HINT: The engine speed sensor and its cables are sensitive to disruptions from nearby cables, such as the starter motor cable or a similar cable with a high current rating. Check if a cable with high current consumption is improperly installed, that is to say lies too close to the engine speed sensor or its cables. HINT: The cause of this diagnostic trouble code can also be damage to the flywheel reference holes for the engine speed sensor. Remedy as necessary. Other information see «CRANKSHAFT POSITION SENSOR (CKP)»(ref-476695-S10340348972012060500000) see «CHECKING WIRING AND TERMINALS»(ref-476689-S17655503092012060500000)

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1. Ignition off Check the engine speed sensor connections for contact resistance and oxidation. Check that the engine speed sensor is properly installed and in the correct position. HINT: The engine speed sensor and its cables are sensitive to disruptions from nearby cables, such as the starter motor cable or a similar cable with a high current rating. Check if a cable with high current consumption is improperly installed, that is to say lies too close to the engine speed sensor or its cables. HINT: The cause of this diagnostic trouble code can also be damage to the flywheel reference holes for the engine speed sensor. Remedy as necessary. Other information see «ENGINE SPEED (RPM) SENSOR, REPLACING»(ref-476695-S29520554312012060500000) see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

1. Continue Refer to «VERIFICATION»(ref-476781-S24932952772012060500000)

1. Ignition off
2. Disconnect the engine control module (ECM). Check the signal cables. Check for a short-circuit to ground. Check for a short-circuit to supply voltage. Check for an open-circuit. Check between: Control module #A30 (#A30) and engine speed (RPM) sensor connector terminal #1, signal cable (+). Control module terminal #A6 (#A6) and engine speed (RPM) sensor connector terminal #2, signal cable (-). HINT: The diagnostic trouble code (DTC) may be the result of a damaged flywheel. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-476691-S27857399862012060500000) see «SIGNAL SPECIFICATION, ENGINE CONTROL MODULE (ECM)»(ref-476694-S30016655152012060500000) see «ENGINE SPEED (RPM) SENSOR, REPLACING»(ref-476695-S29520554312012060500000) see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

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HINT: Bank 1 (cylinder row nearest the front): cylinders 1, 3, 5 and 7.

HINT: Bank 2 (cylinder row furthest to the rear, nearest the passenger compartment): cylinders 2, 4, 6, and 8.

Scheme 351

1. Ignition off
2. Disconnect the engine control module (ECM). Check the signal cable between the control module and the connector for the diagnostic trouble codes (DTC) relevant camshaft position sensor. Check for a short-circuit to ground. Check for a short-circuit to supply voltage. Check for an open-circuit. Measure between: Control module terminal #A33 (#A33) and camshaft position sensor terminal #3 inlet, bank 1 (ECM-P034000). Control module terminal #A34 (#A34) and camshaft position sensor terminal #3 inlet, bank 2 (ECM-P034500). Control module terminal #A31 (#A31) and camshaft position sensor terminal #3 exhaust, bank 1 (ECM-P036500). Control module terminal #A32 (#A32) and camshaft position sensor terminal #3 exhaust, bank 2 (ECM-P039000). Check the voltage supply cable between the control module and the connector for the diagnostic trouble codes (DTC) relevant camshaft position sensor. Check for a short-circuit to ground. Check for a short-circuit to supply voltage. Check for an open-circuit. Measure between: Control module terminal #A72 (#B12) and camshaft position sensor terminal #1. Check the ground lead between the control module and the connector for the diagnostic trouble codes (DTC) relevant camshaft position sensor. Check for a short-circuit to ground. Check for a short-circuit to supply voltage. Check for an open-circuit. Measure between: Control module terminal #A07 (#A7) and camshaft position sensor terminal #2. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-476691-S27857399862012060500000) see «SIGNAL SPECIFICATION, ENGINE CONTROL MODULE (ECM)»(ref-476694-S30016655152012060500000) see «KNOCK SENSOR (KS), REPLACING»(ref-476695-S22830905372012060500000) see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

1. Continue Refer to «VERIFICATION»(ref-476781-S04080637002012060500000)

HINT: Bank 1 (cylinder row nearest the front): cylinders 1, 3, 5 and 7.

HINT: Bank 2 (cylinder row furthest to the rear, nearest the passenger compartment): cylinders 2, 4, 6, and 8.

1. Ignition off Check the camshaft position sensor connector with regard to contact resistance and oxidation. Check that the camshaft position sensor is correctly installed. Check the mounting and position of the camshaft position sensor. Disconnect the engine control module (ECM). Check the signal cable between the engine control module (ECM) and the connector for relevant camshaft position sensor. Check for an intermittent short-circuit to ground. Check for an intermittent short-circuit to supply voltage. Check for an intermittent open-circuit. Measure between: Control module terminal #A33 (#A33) and camshaft position sensor terminal #3 inlet, bank 1 (ECM-P034100). Control module #A34 (#A34) and camshaft position sensor #3 inlet, bank 2 (ECM-P034600). Control module terminal #A31 (#A31) and camshaft position sensor terminal #3 exhaust, bank 1 (ECM-P036600). Control module terminal #A32 (#A32) and camshaft position sensor terminal #3 exhaust, bank 2 (ECM-P039100). Check the supply cable between the control module and the connector for relevant camshaft position sensor. Check for an intermittent short-circuit to ground. Check for an intermittent short-circuit to supply voltage. Check for an intermittent open-circuit. Measure between: Control module terminal #A72 (#B12) and camshaft position sensor terminal #1. Check the ground lead between the control module and the connector for relevant camshaft position sensor. Check for an intermittent short-circuit to ground. Check for an intermittent short-circuit to supply voltage. Check for an intermittent open-circuit. Measure between: Control module terminal #A07 (#A7) and camshaft position sensor terminal #2. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-476691-S27857399862012060500000) see «SIGNAL SPECIFICATION, ENGINE CONTROL MODULE (ECM)»(ref-476694-S30016655152012060500000) see «CONTROL SYSTEM, IGNITION (B8444S; 2005-2011)»(ref-476695-S16864569632012060500000) see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

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