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Engine Performance Diagnostic Trouble Code (DTC) Diagnostics - 7 of 14 (Convertible): Wiring Volvo C70 I

Testing & Diagnostics 1 illustration ~3494 words

Checking wiring and components

Check heated oxygen sensor (HO2S) resistance between #1 and #2.

Check signal cable between heated oxygen sensor (HO2S) #2 and control module #A35 (#A35) and power supply between system relay #3 and heated oxygen sensor (HO2S) #1 for an open-circuit according to Open-circuit, permanent faults .

Remedy as necessary.

Other information

  1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
  2. To access/replace the heated oxygen sensor (HO2S), see «Replacing lambda probes»(ref-404035-S07146606272011061000000) .
  3. For resistance values, see «Component specifications»(ref-403971-S01187285952011061000000) .
  4. For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
  1. Continue Refer to «Verification»(ref-404044-S42748778992011061000000)

Check heated oxygen sensor (HO2S) resistance between #1 and #2.

Check signal cable between heated oxygen sensor (HO2S) #2 and control module #A35 (#A35) for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults .

HINT: Use a test lamp with at least a 3 W bulb to determine whether the cable is short-circuited to supply voltage.

Remedy as necessary.

Other information

  1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
  2. To access/replace the heated oxygen sensor (HO2S), see «Replacing lambda probes»(ref-404035-S07146606272011061000000) .
  3. For resistance values, see «Component specifications»(ref-403971-S01187285952011061000000) .
  4. For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
  1. Continue Refer to «Verification»(ref-404044-S25636758012011061000000)

Check heated oxygen sensor (HO2S) resistance between #1 and #2.

Check signal cable between heated oxygen sensor (HO2S) #2 and engine control module (ECM) #A35 (#A35) for a short-circuit to ground according to Short-circuit to ground, permanent faults .

Remedy as necessary.

Other information

  1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
  2. To access/replace the heated oxygen sensor (HO2S), see «Replacing lambda probes»(ref-404035-S07146606272011061000000) .
  3. For resistance values, see «Component specifications»(ref-403971-S01187285952011061000000) .
  4. For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
  1. Continue Refer to «Verification»(ref-404044-S17931036822011061000000)

Checking the wiring

Check the connector for the camshaft position (CMP) sensor. Check for contact resistance and oxidation.

Check the signal line for open circuit, short-circuit to ground and short-circuit to voltage.

Take readings between

  1. Control module #A 47 and camshaft sensor #2.

Check the voltage cable for open circuit, short-circuit to ground, and short-circuit to voltage.

Take readings between

  1. Control module #A57 and camshaft sensor #1.

Check the ground lead. Check for an open-circuit.

Take readings between

  1. Control module #A65 and camshaft sensor #3.

Remedy as necessary.

Other information

  1. See «Checking wiring and terminals. Permanent fault»(ref-403956-S17348926582011061000000)
  2. To connect the breakout box to the Engine control module (ECM), see: «Connecting the breakout box»(ref-403956-S00897666572011061000000)
  3. To access/replace the engine control module (ECM), see «Replacing the engine control module (ECM)»(ref-404033-S34042663912011061000000)
  4. For information about signals, see «Signal specification»(ref-403973-S19941283772011061000000)

Was a fault detected in the cables or terminals?

  1. YES Refer to «Verification»(ref-404044-S29404990922011061000000)
  2. NO Refer to «Replacing a component»(ref-404044-S28070351452011061000000)

Checking the wiring and component

Check the engine speed (RPM) sensor connector. Check for contact resistance and oxidation.

Check the resistance of the engine speed (RPM) sensor between terminals 1 and 2 in the engine speed (RPM) sensor connector.

For the resistance values, see Impulse sensor .

Check the cable between the engine speed (RPM) sensor terminal 1 and control module terminal #A48. Check for an open-circuit. Check for a short-circuit to supply voltage. Check for a short-circuit to ground.

Check the cable between the engine speed (RPM) sensor terminal 2 and control module terminal #A66. Check for an open-circuit. Check for a short-circuit to supply voltage. Check for a short-circuit to ground.

Remedy as necessary.

Other information

  1. To localize the engine speed (RPM) sensor, see «Location of components»(ref-403970-S02481495422011061000000)
  2. To connect the breakout box, see «Connecting the breakout box»(ref-403956-S00897666572011061000000)
  3. To access the control module, see «Replacing the engine control module (ECM)»(ref-404033-S34042663912011061000000)
  4. For information about signals, see «Signal specification»(ref-403973-S19941283772011061000000)
  5. See «Checking wiring and terminals»(ref-438291-S01987812252011120100000) .

Scheme 354

Scheme 354

Was a fault found in the wiring or connector?

  1. YES Refer to «Verification»(ref-404044-S22194761902011061000000)
  2. NO Refer to «Replacing the component»(ref-404044-S11975161252011061000000)

Checking connector and wiring

Check engine speed (RPM) sensor connector for intermittent contact resistance and oxidation according to Contact resistance and oxidation

Check the signal cable between the engine speed (RPM) sensor #1 and the engine control module (ECM) #A48 (#A48) and between the engine speed (RPM) sensor #2 and the engine control module (ECM) #A66 (#B6) for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults , an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults and an intermittent open-circuit according to Open-circuit, intermittent faults .

Check the carrier plate, search for damage and other defects.

Remedy as necessary

Other information

  1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
  2. To access/replace the engine speed (RPM) sensor, see «Replacing the engine speed (RPM) sensor»(ref-438318-S20919570762011120100000) .
  3. For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
  1. Continue Refer to «Information»(ref-404044-S42501324152011061000000)

Checking connectors and wiring

Check the engine speed (RPM) sensor connector. Check for intermittent contact resistance and oxidation.

Check the signal cable between the engine speed (RPM) sensor terminal #1 and engine control module (ECM) terminal #A48 (#A48) and between the engine speed (RPM) sensor terminal #2 and engine control module (ECM) terminal #A66 (#B6). Check for an intermittent short-circuit to supply voltage. Check for an intermittent short-circuit to ground. Check for an intermittent open-circuit.

Check the carrier plate, search for damage and other defects.

Remedy as necessary

Other information

  1. To connect the breakout box / access the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000)
  2. To access or replace the engine speed (RPM) sensor, see «Engine speed (RPM) sensor, replacing»(ref-404026-S40426827392011061000000)
  3. For information about signals on 5 cylinder engines, see «Signal specification»(ref-438318-S23639998362011120100000)
  4. See «Contents»(ref-438291-S00903409402011120100000) .
  1. Continue Refer to «Information»(ref-404044-S38624981472011061000000)

Check engine speed (RPM) sensor connector for contact resistance and oxidation according to Contact resistance and oxidation

Check the signal cable between the engine speed (RPM) sensor #1 and the engine control module (ECM) #A48 (#A48) and between the engine speed (RPM) sensor #2 and the engine control module (ECM) #A66 (#B6) for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults , a short-circuit to ground according to Short-circuit to ground, permanent faults and for an open-circuit according to Open-circuit, permanent faults

Check the carrier plate, search for damage and other defects.

Remedy as necessary

Other information

  1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
  2. To access/replace the engine speed (RPM) sensor, see «Replacing the engine speed (RPM) sensor»(ref-438318-S20919570762011120100000) .
  3. For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
  1. Continue Refer to «Verification»(ref-404044-S28909672532011061000000)

Check the engine speed (RPM) sensor connector. Check for contact resistance and oxidation.

Check the signal cable between the engine speed (RPM) sensor terminal #1 and engine control module (ECM) terminal #A48 (#A48). Check the signal cable between engine speed (RPM) sensor terminal #2 and engine control module (ECM) terminal #A66 (#B6). Check for a short-circuit to supply voltage. Check for an short-circuit to ground. Check for an open-circuit.

Check the carrier plate, search for damage and other defects.

Remedy as necessary.

Other information

  1. To connect the breakout box / access the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000)
  2. To access or replace the engine speed (RPM) sensor, see «Engine speed (RPM) sensor, replacing»(ref-404026-S40426827392011061000000)
  3. For information about signals on 5 cylinder engines, see «Signal specification»(ref-438318-S23639998362011120100000)
  4. See «Contents»(ref-438291-S00903409402011120100000) .
  1. Continue Refer to «Verification»(ref-404044-S35000875312011061000000)

Check signal cable between ignition coil #1 and control module

  1. #A31 (#A31) (ECM 3300)
  2. #A30 (#A30) (ECM 3310)
  3. #A50 (#A50) (ECM 3320)
  4. #A52 (#A52) (ECM 3330)
  5. #A51 (#A51) (ECM 3340)

and power supply between system relay #3 and ignition coil #4 for an open-circuit according to Open-circuit, permanent faults .

Remedy as necessary.

Other information

  1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
  2. To access/replace the ignition coil, see «Replacing ignition coils»(ref-438318-S23972783792011120100000) .
  3. For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
  1. Continue Refer to «Verification»(ref-404044-S40687322922011061000000)

Check signal cable between ignition coil #1 and control module

  1. #A31 (#A31) (ECM 3300)
  2. #A30 (#A30) (ECM 3310)
  3. #A50 (#A50) (ECM 3320)
  4. #A52 (#A52) (ECM 3330)
  5. #A51 (#A51) (ECM 3340)

and the power supply between system relay #3 and ignition coil #4 for an open-circuit according to Open-circuit, permanent faults .

Remedy as necessary.

Other information

  1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
  2. To access/replace the ignition coil, see «Replacing ignition coils»(ref-438318-S23972783792011120100000) .
  3. For information about signals, see «Signal specification»(ref-438318-S23639998362011120100000) .
  1. Continue Refer to «Verification»(ref-404044-S26857517202011061000000)

Check signal cable between ignition coil #1 and control module

  1. #A31 (#A31) (ECM 3300)
  2. #A30 (#A30) (ECM 3310)
  3. #A50 (#A50) (ECM 3320)
  4. #A52 (#A52) (ECM 3330)
  5. #A51 (#A51) (ECM 3340)

and power supply between system relay #3 and ignition coil #4 for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults .

HINT: Use an electrician's screwdriver with at least a 3 W bulb to determine whether the cable is short-circuited to supply voltage.

Remedy as necessary.

Other information

  1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
  2. To access/replace the ignition coil, see «Replacing ignition coils»(ref-438318-S23972783792011120100000) .
  3. For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
  1. Continue Refer to «Verification»(ref-404044-S20734417072011061000000)

Check signal cable between ignition coil #1 and control module

  1. #A31 (#A31) (ECM 3300)
  2. #A30 (#A30) (ECM 3310)
  3. #A50 (#A50) (ECM 3320)
  4. #A52 (#A52) (ECM 3330)
  5. #A51 (#A51) (ECM 3340)

and power supply between system relay #3 and ignition coil #4 for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults .

HINT: Use an electrician's screwdriver with at least a 3 W bulb to determine whether the cable is short-circuited to supply voltage.

Remedy as necessary.

Other information

  1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
  2. To access/replace the ignition coil, see «Replacing ignition coils»(ref-438318-S23972783792011120100000) .
  3. For information about signals, see «Signal specification»(ref-438318-S23639998362011120100000) .
  1. Continue Refer to «Verification»(ref-404044-S05659191512011061000000)

Check signal cable between ignition coil #1 and control module

  1. #A31 (#A31) (ECM 3300)
  2. #A30 (#A30) (ECM 3310)
  3. #A50 (#A50) (ECM 3320)
  4. #A52 (#A52) (ECM 3330)
  5. #A51 (#A51) (ECM 3340)

for a short-circuit to ground according to Short-circuit to ground, permanent faults .

Remedy as necessary.

Other information

  1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
  2. To access/replace the ignition coil, see «Replacing ignition coils»(ref-438318-S23972783792011120100000) .
  3. For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
  1. Continue Refer to «Verification»(ref-404044-S12426862912011061000000)

Check signal cable between ignition coil #1 and control module

  1. #A31 (#A31) (ECM 3300)
  2. #A30 (#A30) (ECM 3310)
  3. #A50 (#A50) (ECM 3320)
  4. #A52 (#A52) (ECM 3330)
  5. #A51 (#A51) (ECM 3340)

for a short-circuit to ground according to Short-circuit to ground, permanent faults .

Remedy as necessary.

Other information

  1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
  2. To access/replace the ignition coil, see «Replacing ignition coils»(ref-438318-S23972783792011120100000) .
  3. For information about signals, see «Signal specification»(ref-438318-S23639998362011120100000) .
  1. Continue Refer to «Verification»(ref-404044-S08964660822011061000000)

Check the knock sensor (KS) connector for contact resistance and oxidation. See Contact resistance and oxidation .

Check the cable between control module terminal #A46 and knock sensor (KS) terminal 1. Check for an open-circuit. See Open-circuit, permanent faults . Check for a short-circuit to supply voltage. See Short-circuit to supply voltage. Permanent faults .

Check the cable between control module terminal #A64 and knock sensor (KS) terminal 2. Check for an open-circuit. See Open-circuit, permanent faults . Check for a short-circuit to supply voltage. See Short-circuit to supply voltage. Permanent faults .

Remedy as necessary.

Other information

  1. To localize the knock sensor (KS), see «Location of components»(ref-403970-S02481495422011061000000)
  2. To connect the breakout box, see «Connecting the breakout box»(ref-403956-S00897666572011061000000)
  3. For information about signals, see «Signal specification»(ref-403973-S19941283772011061000000) .

Was a fault found in the wiring or connector?

  1. YES Refer to «Verification»(ref-404044-S06862204012011061000000)
  2. NO Refer to «Replacing the component»(ref-404044-S05742500662011061000000)

Check the cable between control module terminal #A46 and knock sensor (KS) terminal 1. Check for a short-circuit to ground. See Short-circuit to ground, permanent faults .

Check the cable between control module terminal #A64 and knock sensor (KS) terminal 2. Check for a short-circuit to ground. See Short-circuit to ground, permanent faults .

Remedy as necessary.

Other information

  1. To connect the breakout box, see «Connecting the breakout box»(ref-403956-S00897666572011061000000)
  2. For information about signals, see «Signal specification»(ref-403973-S19941283772011061000000)
  3. To access or replace the knock sensor (KS), see «Replacing knock sensor (KS)»(ref-404033-S16808667652011061000000) .

Was a fault found in the wiring?

  1. YES Refer to «Verification»(ref-404044-S28356904062011061000000)
  2. NO Refer to «Replacing the component»(ref-404044-S39946879042011061000000)

Check the signal cable between knock sensor (KS) terminal #1 and control module #A46 (#A46). Check the ground lead between knock sensor (KS) terminal #2 and control module terminal #A64 (#B4). Check for an intermittent short-circuit to supply voltage.

Check that the knock sensor (KS) is tightened to the correct torque.

HINT: The diagnostic trouble code (DTC) may be caused by a worn engine. Start the engine and listen for noise.

Other information

  1. To connect the breakout box / access the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000)
  2. To access or replace the knock sensor (KS), see «Knock sensor (KS), replacing»(ref-404036-S04338783722011061000000)
  3. For information about signals on 5 cylinder engines, see «Signal specification»(ref-438318-S23639998362011120100000)
  4. See «Contents»(ref-438291-S00903409402011120100000) .
  1. Continue Refer to «Information»(ref-404044-S12561617082011061000000)

Check signal cable between knock sensor (KS) #1 and control module #A46 (#A46) and ground lead between knock sensor (KS) #2 and control module #A64 (#B4) for a short-circuit to supply voltage to supply voltage according to Short-circuit to supply voltage. Permanent faults .

Check that knock sensor (KS) is tightened to correct torque according to Knock sensor (KS), replacing .

HINT: The diagnostic trouble code (DTC) may be caused by a worn engine. Start the engine and listen for discordant noise.

Remedy as necessary.

Other information

  1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
  2. For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
  1. Continue Refer to «Verification»(ref-404044-S06671042302011061000000)

Checking components and wiring

Check the signal cable between knock sensor (KS) terminal #1 and control module terminal #A46 (#A46). Check the ground lead between knock sensor (KS) terminal #2 and control module terminal #A64 (#B4). Check for a short-circuit to supply voltage.

Check that the knock sensor (KS) is tightened to the correct torque.

HINT: The diagnostic trouble code (DTC) may be caused by a worn engine. Start the engine and listen for noise.

Remedy as necessary.

Other information

  1. To connect the breakout box / access the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000)
  2. To access or replace the knock sensor (KS), see «Knock sensor (KS), replacing»(ref-404036-S04338783722011061000000)
  3. For information about signals on 5 cylinder engines, see «Signal specification»(ref-438318-S23639998362011120100000)
  4. See «Contents»(ref-438291-S00903409402011120100000)
  1. Continue Refer to «Verification»(ref-404044-S05949811222011061000000)

Checking wiring and connectors

Check the knock sensor (KS) connector. Check for contact resistance and oxidation. Check for loose connections.

Check the signal cable between knock sensor (KS) terminal #1 and control module terminal #A46 (#A46). Check the ground lead between knock sensor (KS) terminal #2 and control module terminal #A64 (#B4). Check for an intermittent open-circuit. Check for an intermittent short-circuit to ground.

Check that the knock sensor (KS) is tightened to the correct torque.

Other information

  1. To connect the breakout box / access the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000)
  2. To access or replace the knock sensor (KS), see «Knock sensor (KS), replacing»(ref-404036-S04338783722011061000000)
  3. For information about signals on 5 cylinder engines, see «Signal specification»(ref-438318-S23639998362011120100000)
  4. See «Contents»(ref-438291-S00903409402011120100000) .
  1. Continue Refer to «Information»(ref-404044-S03276084702011061000000)

Check knock sensor (KS) connector for contact resistance and oxidation according to Contact resistance and oxidation .

Check signal cable between knock sensor (KS) #1 and control module #A46 (#A46) and ground lead between knock sensor (KS) #2 and control module #A64 (#B4) for an open-circuit according to Open-circuit, permanent faults and for a short-circuit to ground according to Short-circuit to ground, permanent faults .

Check that the knock sensor (KS) is tightened to the correct torque.

Remedy as necessary.

Other information

  1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
  2. To access/replace the knock sensor (KS), see «Knock sensor (KS), replacing»(ref-404033-S23675928042011061000000) .
  3. For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
  1. Continue Refer to «Checking knock sensor (KS) signal»(ref-404044-S14102753362011061000000)

Check the knock sensor (KS) connector. Check for contact resistance and oxidation.

Check the signal cable between knock sensor (KS) terminal #1 and control module terminal #A46 (#A46). Check the ground lead between knock sensor (KS) terminal #2 and control module terminal #A64 (#B4). Check for an open-circuit. Check for a short-circuit to ground.

Check that the knock sensor (KS) is tightened to the correct torque.

Remedy as necessary.

Other information

  1. To connect the breakout box / access the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000)
  2. To access or replace the knock sensor (KS), see «Knock sensor (KS), replacing»(ref-404036-S04338783722011061000000)
  3. For information about signals on 5 cylinder engines, see «Signal specification»(ref-438318-S23639998362011120100000)
  4. See «Contents»(ref-438291-S00903409402011120100000) .
  1. Continue Refer to «Checking the knock sensor (KS) signal»(ref-404044-S26944366212011061000000)

Check the signal cable between knock sensor (KS) terminal #3 and control module terminal #A45 (#A45). Check the ground lead between knock sensor (KS) terminal #4 and control module terminal #A67 (#B7). Check for an intermittent short-circuit to supply voltage.

Check that the knock sensor (KS) is tightened to the correct torque.

HINT: The diagnostic trouble code (DTC) may be caused by a worn engine. Start the engine and listen for noise.

Other information

  1. To connect the breakout box / access the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000)
  2. To access or replace the knock sensor (KS), see «Knock sensor (KS), replacing»(ref-404036-S04338783722011061000000)
  3. For information about signals on 5 cylinder engines, see «Signal specification»(ref-438318-S23639998362011120100000)
  4. See «Contents»(ref-438291-S00903409402011120100000) .
  1. Continue Refer to «Information»(ref-404044-S30377380622011061000000)

Check signal cable between knock sensor (KS) #3 and control module #A45 (#A45) and ground lead between knock sensor (KS) #4 and control module #A67 (#B7) for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults .

Check that the knock sensor (KS) is tightened to the correct torque.

HINT: The diagnostic trouble code (DTC) may be caused by a worn engine. Start the engine and listen for discordant noise.

Remedy as necessary.

Other information

  1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
  2. To access/replace the knock sensor (KS), see «Knock sensor (KS), replacing»(ref-404033-S23675928042011061000000) .
  3. For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
  1. Continue Refer to «Verification»(ref-404044-S29872207032011061000000)

Check the signal cable between knock sensor (KS) terminal #3 and control module terminal #A45 (#A45). Check the ground lead between knock sensor (KS) terminal #4 and control module #A67 (#B7). Check for a short-circuit to supply voltage.

Check that the knock sensor (KS) is tightened to the correct torque.

HINT: The diagnostic trouble code (DTC) may be caused by a worn engine. Start the engine and listen for noise.

Remedy as necessary.

Other information

  1. To connect the breakout box / access the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000)
  2. For information about signals on 5 cylinder engines, see «Signal specification»(ref-438318-S23639998362011120100000)
  3. To access or replace the knock sensor (KS), see «Knock sensor (KS), replacing»(ref-404036-S04338783722011061000000)
  4. See «Contents»(ref-438291-S00903409402011120100000) .
  1. Continue Refer to «Verification»(ref-404044-S21986499222011061000000)

Check the knock sensor (KS) connector. Check for contact resistance and oxidation. Check for loose connections.

Check the signal cable between knock sensor (KS) terminal #3 and control module terminal #A45 (#A45). Check the ground lead between knock sensor (KS) terminal #4 and control module terminal #A67 (#B7). Check for an intermittent open-circuit. Check for an intermittent short-circuit to ground.

Check that the knock sensor (KS) is tightened to the correct torque.

Other information

  1. To connect the breakout box / access the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000)
  2. To access or replace the knock sensor (KS), see «Knock sensor (KS), replacing»(ref-404036-S04338783722011061000000)
  3. For information about signals on 5 cylinder engines, see «Signal specification»(ref-438318-S23639998362011120100000)
  4. See «Contents»(ref-438291-S00903409402011120100000) .
  1. Continue Refer to «Information»(ref-404044-S17689512522011061000000)

Check knock sensor (KS) connector for contact resistance and oxidation according to Contact resistance and oxidation .

Check the signal cable between knock sensor (KS) #3 and control module #A45 (#A45) and the ground lead between knock sensor (KS) #4 and control module #A67 (#B7) for an open-circuit according to Open-circuit, permanent faults and for a short-circuit to ground according to Short-circuit to ground, permanent faults .

Check that the knock sensor (KS) is tightened to the correct torque.

Remedy as necessary.

Other information

  1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
  2. To access/replace the knock sensor (KS), see «Knock sensor (KS), replacing»(ref-404033-S23675928042011061000000) .
  3. For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
  1. Continue Refer to «Checking knock sensor (KS) signal»(ref-404044-S30518004052011061000000)

Check the knock sensor (KS) connector. Check for contact resistance and oxidation.

Check the signal cable between knock sensor (KS) terminal #3 and control module terminal #A45 (#A45). Check the ground lead between knock sensor (KS) terminal #4 and control module terminal #A67 (#B7). Check for an open-circuit. Check for a short-circuit to ground.

Check that the knock sensor (KS) is tightened to the correct torque.

Remedy as necessary.

Other information

  1. To connect the breakout box / access the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000)
  2. To access or replace the knock sensor (KS), see «Knock sensor (KS), replacing»(ref-404036-S04338783722011061000000)
  3. For information about signals on 5 cylinder engines, see «Signal specification»(ref-438318-S23639998362011120100000)
  4. See «Contents»(ref-438291-S00903409402011120100000) .
  1. Continue Refer to «Checking the knock sensor (KS) signal»(ref-404044-S33682672492011061000000)