Checking component and wiring
Check if there is any refrigerant in the air conditioning (A/C).
HINT: If there is refrigerant in the A/C system there is probably a fault in the A/C pressure sensor.
Check air conditioning (A/C) system for damage and leakage.
Remedy as necessary.
Other information
- Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
- Air conditioning (A/C) pressure sensor #2 is the signal cable, #3 is the power supply (5 V) and #1 is the signal ground.
- For resistance values, see «Component specifications»(ref-403971-S01187285952011061000000) .
- For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
Scheme 415
Scheme 416
- Continue Refer to «Verification»(ref-404047-S32412306142011061000000)
Check if there is any refrigerant in the air conditioning (A/C).
HINT: If there is refrigerant in the A/C system there is probably a fault in the A/C pressure sensor.
Check air conditioning (A/C) system for damage and leakage.
Remedy as necessary.
Other information
- Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
- Air conditioning (A/C) pressure sensor #2 is the signal cable, #3 is the power supply (5 V) and #1 is the signal ground.
- For resistance values, see «Component specifications»(ref-403972-S40713314922011061000000) .
- For information about signals on 5-cylinder engines, see «Signal specification»(ref-438318-S23639998362011120100000) .
- Continue Refer to «Verification»(ref-404047-S28283141082011061000000)
Checking wiring and components
Check cable between control module #A21 (#A21) and air conditioning (A/C) pressure sensor terminal 2 for an open-circuit according to Open-circuit, permanent faults , and a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults .
Check cable between control module #A58 (#A58) and air conditioning (A/C) pressure sensor terminal 3 for an open-circuit according to Open-circuit, permanent faults , and a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults .
Remedy as necessary.
Other information
- To connect the breakout box, see «Connecting the breakout box»(ref-403956-S00897666572011061000000) .
- To access/replace the control module, see «Replacing the engine control module (ECM)»(ref-404033-S34042663912011061000000) .
- To access/replace air conditioning (A/C) pressure sensor, see «Replacing pressure switch /Pressostat»(ref-404033-S02936868792011061000000) .
- For information about signals, see «Signal specification»(ref-403973-S19941283772011061000000) .
Was a fault found in the wiring?
- YES Refer to «Verification»(ref-404047-S09136367272011061000000)
- NO Refer to «Replacing component»(ref-404047-S07491367552011061000000)
Checking wiring and connectors
Check control module and air conditioning (A/C) pressure sensor connector for contact resistance and oxidation according to Contact resistance and oxidation , and loose connections according to Loose connections (terminals) .
Check signal cable between engine control module (ECM) #A21 (#A21) and air conditioning (A/C) pressure sensor terminal 2 for an intermittent short-circuit to ground according to Open-circuit, intermittent faults , and an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults .
Check cable between control module #A58 (#A58) and air conditioning (A/C) pressure sensor terminal 3 for an intermittent open-circuit according to Open-circuit, intermittent faults .
Other information
- To connect the breakout box, see «Connecting the breakout box»(ref-403956-S00897666572011061000000) .
- To access/replace the control module, see «Replacing the engine control module (ECM)»(ref-404033-S34042663912011061000000)
- To access/replace air conditioning (A/C) pressure sensor, see «Replacing pressure switch /Pressostat»(ref-404033-S02936868792011061000000) .
- For information about signals, see «Signal specification»(ref-403973-S19941283772011061000000) .
- Continue Refer to «Information»(ref-404047-S42033119642011061000000)
Check signal cable between engine control module (ECM) #A68 (#B8) and air conditioning (A/C) pressure sensor #2 for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults
Check power supply cable between engine control module (ECM) #A39 (#A39) and air conditioning (A/C) pressure sensor #3 for an intermittent open-circuit according to Open-circuit, intermittent faults
Check power supply cable between engine control module (ECM) #A60 (#A60) and air conditioning (A/C) pressure sensor #1 for an intermittent open-circuit according to Open-circuit, intermittent faults
Remedy as necessary
Other information
- Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
- Air conditioning (A/C) pressure sensor #2 is the signal cable, #3 is the power supply (5 V) and #1 is the signal ground.
- For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
- Continue Refer to «Information»(ref-404047-S14788293132011061000000)
Check signal cable between engine control module (ECM) #A68 (#B8) and air conditioning (A/C) sensor #2 for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults
Check power supply cable between engine control module (ECM) #A39 (#A39) and air conditioning (A/C) pressure sensor #3 for an intermittent open-circuit according to Open-circuit, intermittent faults
Check power supply cable between engine control module (ECM) #A60 (#A60) and air conditioning (A/C) pressure sensor #1 for an intermittent open-circuit according to Open-circuit, intermittent faults
Remedy as necessary
Other information
- Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
- Air conditioning (A/C) pressure sensor #2 is the signal cable, #3 is the power supply (5 V) and #1 is the signal ground.
- For information about signals on 5-cyl, see «Signal specification»(ref-438318-S23639998362011120100000) .
- For information about signals on 6-cyl, see «Signal specification»(ref-438318-S29219213252011120100000) .
- Continue Refer to «Information»(ref-404047-S06019908852011061000000)
Check control module and air conditioning (A/C) pressure sensor connector for contact resistance and oxidation according to Contact resistance and oxidation , and loose connections according to Loose connections (terminals) .
Check signal cable between engine control module (ECM) #A21 (#A21) and air conditioning (A/C) pressure sensor terminal 2 for an intermittent short-circuit to ground according to Open-circuit, intermittent faults , and an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults .
Check cable between control module #A58 (#A58) and air conditioning (A/C) pressure sensor terminal 3 for an intermittent open-circuit according to Open-circuit, intermittent faults .
Other information
- To connect the breakout box, see «Connecting the breakout box»(ref-403956-S00897666572011061000000) .
- To access/replace the control module, see «Replacing the engine control module (ECM)»(ref-404033-S34042663912011061000000)
- To access/replace air conditioning (A/C) pressure sensor, see «Replacing pressure switch /Pressostat»(ref-404033-S02936868792011061000000) .
- For information about signals, see «Signal specification»(ref-403973-S19941283772011061000000) .
- Continue Refer to «Information»(ref-404047-S06030456802011061000000)
Check signal cable between engine control module (ECM) #A68 (#B8) and air conditioning (A/C) pressure sensor #2 for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults .
Check power supply cable between engine control module (ECM) #A39 (#A39) and air conditioning (A/C) pressure sensor #3 for an open-circuit according to Open-circuit, permanent faults .
Check power supply cable between engine control module (ECM) #A60 (#A60) and air conditioning (A/C) pressure sensor #1 for an open-circuit according to Open-circuit, permanent faults .
Remedy as necessary.
Other information
- Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
- Air conditioning (A/C) pressure sensor #2 is the signal cable, #3 is the power supply (5 V) and #1 is the signal ground.
- For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
- Continue Refer to «Verification»(ref-404047-S09951113942011061000000)
Check signal cable between engine control module (ECM) #A68 (#B8) and air conditioning (A/C) pressure sensor #2 for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults .
Check power supply cable between engine control module (ECM) #A39 (#A39) and air conditioning (A/C) pressure sensor #3 for an open-circuit according to Open-circuit, permanent faults .
Check power supply cable between engine control module (ECM) #A60 (#A60) and air conditioning (A/C) pressure sensor #1 for an open-circuit according to Open-circuit, permanent faults .
Remedy as necessary.
Other information
- Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
- Air conditioning (A/C) pressure sensor #2 is the signal cable, #3 is the power supply (5 V) and #1 is the signal ground.
- For information about signals on 5-cylinder engines, see «Signal specification»(ref-438318-S23639998362011120100000) .
- Continue Refer to «Verification»(ref-404047-S41264572252011061000000)
Check air conditioning (A/C) pressure sensor resistance. For resistance values, see A/C pressure sensor .
Check signal cable between control module #A21 (#A21) and mass air flow (MAF) sensor terminal 2 for a short-circuit to ground according to Short-circuit to ground, permanent faults .
HINT: With the ignition on and air conditioning (A/C) pressure sensor connector disconnected the voltage between terminal 3 and ground terminal should be approximately 5 V.
Remedy as necessary.
Other information
- To connect the breakout box, see «Connecting the breakout box»(ref-403956-S00897666572011061000000) .
- To access/replace air conditioning (A/C) pressure sensor, see «Replacing pressure switch /Pressostat»(ref-404033-S02936868792011061000000) .
- For information about signals, see «Signal specification»(ref-403973-S19941283772011061000000) .
- Continue Refer to «Verification»(ref-404047-S04721604822011061000000)
Check signal cable between engine control module (ECM) #A21 (#A21) and air conditioning (A/C) pressure sensor terminal 2 for an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults .
Other information
- To connect the breakout box, see «Connecting the breakout box»(ref-403956-S00897666572011061000000) .
- To access/replace the control module, see «Replacing the engine control module (ECM)»(ref-404033-S34042663912011061000000) .
- To access/replace air conditioning (A/C) pressure sensor, see «Replacing pressure switch /Pressostat»(ref-404033-S02936868792011061000000) .
- For information about signals, see «Signal specification»(ref-403973-S19941283772011061000000) .
- Continue Refer to «Information»(ref-404047-S20871961032011061000000)
Check air conditioning (A/C) pressure sensor connector for intermittent contact resistance and oxidation according to Contact resistance and oxidation
Check cable between engine control module (ECM) #A68 (#B8) and air conditioning (A/C) sensor #2 for an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults
Check signal cable between engine control module (ECM) #A68 (#B8) and air conditioning (A/C) pressure sensor #2 for an intermittent open circuit according to Open-circuit, intermittent faults
Check power supply cable between engine control module (ECM) #A39 (#A39) and air conditioning (A/C) pressure sensor #3 for an intermittent open-circuit according to Open-circuit, intermittent faults
Remedy as necessary
Other information
- Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
- Air conditioning (A/C) pressure sensor #2 is the signal cable, #3 is the power supply (5 V) and #1 is the signal ground.
- For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
- Continue Refer to «Information»(ref-404047-S13859834272011061000000)
Check air conditioning (A/C) pressure sensor connector for intermittent contact resistance and oxidation according to Contact resistance and oxidation
Check cable between engine control module (ECM) #A68 (#B8) and air conditioning (A/C) sensor #2 for an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults
Check signal cable between engine control module (ECM) #A68 (#B8) and air conditioning (A/C) pressure sensor #2 for an intermittent open circuit according to Open-circuit, intermittent faults
Check power supply cable between engine control module (ECM) #A39 (#A39) and air conditioning (A/C) pressure sensor #3 for an intermittent open-circuit according to Open-circuit, intermittent faults
Remedy as necessary
Other information
- Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
- Air conditioning (A/C) pressure sensor #2 is the signal cable, #3 is the power supply (5 V) and #1 is the signal ground.
- For information about signals on 5-cyl, see «Signal specification»(ref-438318-S23639998362011120100000) .
- For information about signals on 6-cyl, see «Signal specification»(ref-438318-S29219213252011120100000) .
- Continue Refer to «Information»(ref-404047-S15882177822011061000000)
Check signal cable between engine control module (ECM) #A21 (#A21) and air conditioning (A/C) pressure sensor terminal 2 for an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults .
Other information
- To connect the breakout box, see «Connecting the breakout box»(ref-403956-S00897666572011061000000) .
- To access/replace the control module, see «Replacing the engine control module (ECM)»(ref-404033-S34042663912011061000000) .
- To access/replace air conditioning (A/C) pressure sensor, see «Replacing pressure switch /Pressostat»(ref-404033-S02936868792011061000000) .
- For information about signals, see «Signal specification»(ref-403973-S19941283772011061000000) .
- Continue Refer to «Information»(ref-404047-S37984314782011061000000)
Check air conditioning (A/C) pressure sensor connector for contact resistance and oxidation according to Contact resistance and oxidation .
Check signal cable between engine control module (ECM) #A68 (#B8) and air conditioning (A/C) pressure sensor #2 for an short-circuit to ground according to Short-circuit to ground, permanent faults .
Check signal cable between engine control module (ECM) #A68 (#B8) and air conditioning (A/C) pressure sensor #2 for an open circuit according to Open-circuit, permanent faults .
Check power supply cable between engine control module (ECM) #A39 (#A39) and air conditioning (A/C) pressure sensor #3 for an open-circuit according to Open-circuit, permanent faults .
Remedy as necessary.
Other information
- Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
- Air conditioning (A/C) pressure sensor #2 is the signal cable, #3 is the power supply (5 V) and #1 is the signal ground.
- For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
- Continue Refer to «Verification»(ref-404047-S23297635472011061000000)
Check air conditioning (A/C) pressure sensor connector for contact resistance and oxidation according to Contact resistance and oxidation .
Check signal cable between engine control module (ECM) #A68 (#B8) and air conditioning (A/C) pressure sensor #2 for an short-circuit to ground according to Short-circuit to ground, permanent faults .
Check signal cable between engine control module (ECM) #A68 (#B8) and air conditioning (A/C) pressure sensor #2 for an open circuit according to Open-circuit, permanent faults .
Check power supply cable between engine control module (ECM) #A39 (#A39) and air conditioning (A/C) pressure sensor #3 for an open-circuit according to Open-circuit, permanent faults .
Remedy as necessary.
Other information
- Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
- Air conditioning (A/C) pressure sensor #2 is the signal cable, #3 is the power supply (5 V) and #1 is the signal ground.
- For information about signals on 5-cylinder engines, see «Signal specification»(ref-438318-S23639998362011120100000) .
- Continue Refer to «Verification»(ref-404047-S40131068092011061000000)
Checking the wiring and component
Check the cable between the ignition's #50 and starter motor relay's #2 as well as between starter motor relay's #2 and the control module's #B23 for intermittent short-circuiting to voltage.
Remedy as necessary.
Other information
- See «Connecting the breakout box»(ref-403956-S00897666572011061000000)
- See «Engine Control Module (ECM), replacing»(ref-404026-S05981562602011061000000)
- See «Signal specification»(ref-403973-S19941283772011061000000)
- See «Checking wiring and terminals. Intermittent faults»(ref-403956-S25853903222011061000000)
- Continue Refer to «Verification»(ref-404047-S37781824392011061000000)
Check cable between starter motor relay #2 and control module #B23 for an open-circuit according to Open-circuit, permanent faults .
Remedy as necessary.
Other information
- To connect the breakout box, see «Connecting the breakout box»(ref-403956-S00897666572011061000000) .
- To access/replace the control module, see «Replacing the engine control module (ECM)»(ref-404033-S34042663912011061000000) .
- For information about signals, see «Signal specification»(ref-403973-S19941283772011061000000) .
- Continue Refer to «Verification»(ref-404047-S22060927772011061000000)
Check the connector for the air conditioning (A/C) relay. Check for contact resistance and oxidation. Check for loose connections.
Check the signal cable between control module terminal #B44 and air conditioning (A/C) relay terminal #4. Check the power supply between system relay terminal #3 and A/C relay terminal #2. Check for an intermittent open-circuit.
Other information
- To connect the breakout box / access the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000)
- For information about signals on 5 cylinder engines, see «Signal specification»(ref-438318-S23639998362011120100000)
- See «Contents»(ref-438291-S00903409402011120100000) .
- Continue Refer to «Information»(ref-404047-S03843433272011061000000)
Check air conditioning (A/C) relay resistance. At +20 °C (68 °F) the resistance should be approximately 84 ohms. For resistance values see Component specifications .
Check the signal cable between control module #B44 and air conditioning (A/C) relay #4 and the power supply between system relay #3 and A/C relay #2 for an open-circuit according to Open-circuit, permanent faults , and a short-circuit to ground according to Short-circuit to ground, permanent faults .
Remedy as necessary.
Other information
- To connect the breakout box/access the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
- To access/replace the air conditioning (A/C) relay, see «Integrated relay/fusebox, engine compartment, replacing»(ref-404036-S25269811422011061000000) .
- For information about signals, see «Signal specification»(ref-438318-S23639998362011120100000) .
- Continue Refer to «Verification»(ref-404047-S15750227912011061000000)
Checking components and wiring
Check the resistance of the air conditioning (A/C) relay. At +20 °C the resistance must be approximately 96 ohms between terminals #2 and #4. For the resistance values, see Component specifications .
Check the signal cable between control module terminal #B44 and air conditioning (A/C) relay terminal #4. Check the power supply between system relay terminal #3 and A/C relay terminal #2. Check for an open-circuit. Check for a short-circuit to ground.
Remedy as necessary.
Other information
- To connect the breakout box / access the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000)
- For information about signals on 5 cylinder engines, see «Signal specification»(ref-438318-S23639998362011120100000)
- See «Contents»(ref-438291-S00903409402011120100000) .
- Continue Refer to «Verification»(ref-404047-S22947878802011061000000)
Checking the wiring
Check the signal cable between control module terminal #B44 and air conditioning (A/C) relay terminal #4. Check for an intermittent short-circuit to supply voltage.
Other information
- To connect the breakout box / access the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000)
- For information about signals on 5 cylinder engines, see «Signal specification»(ref-438318-S23639998362011120100000)
- See «Contents»(ref-438291-S00903409402011120100000) .
- Continue Refer to «Information»(ref-404047-S19052718102011061000000)
Check the signal cable between control module #B44 and air conditioning (A/C) relay #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
- To connect the breakout box/access the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
- To access/replace the air conditioning (A/C) relay, see «Integrated relay/fusebox, engine compartment, replacing»(ref-404036-S25269811422011061000000) .
- For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
- Continue Refer to «Verification»(ref-404047-S20265546872011061000000)
Check the signal cable between control module terminal #B44 and air conditioning (A/C) relay terminal #4. Check for a short-circuit to supply voltage.
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
- To connect the breakout box / access the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000)
- For information about signals on 5 cylinder engines, see «Signal specification»(ref-438318-S23639998362011120100000)
- See «Contents»(ref-438291-S00903409402011120100000) .
- Continue Refer to «Verification»(ref-404047-S37391036572011061000000)
Check the signal cable between control module terminal #B44 and air conditioning (A/C) relay terminal #4. Check for an intermittent short-circuit to ground.
Other information
- To connect the breakout box / access the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000)
- For information about signals on 5 cylinder engines, see «Signal specification»(ref-438318-S23639998362011120100000)
- See «Contents»(ref-438291-S00903409402011120100000) .
- Continue Refer to «Information»(ref-404047-S15901434732011061000000)
Check signal cable between control module #B44 and air conditioning (A/C) relay #4 for a short-circuit to ground according to Short-circuit to ground, permanent faults .
Remedy as necessary.
Other information
- To connect the breakout box/access the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000)
- To access/replace the air conditioning (A/C) relay, see «Integrated relay/fusebox, engine compartment, replacing»(ref-404036-S25269811422011061000000)
- For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000)
- Continue Refer to «Verification»(ref-404047-S41907381632011061000000)
Check the signal cable between control module terminal #B44 and air conditioning (A/C) relay terminal #4. Check for a short-circuit to ground.
Remedy as necessary.
Other information
- To connect the breakout box / access the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000)
- For information about signals on 5 cylinder engines, see «Signal specification»(ref-438318-S23639998362011120100000)
- See «Contents»(ref-438291-S00903409402011120100000) .
- Continue Refer to «Verification»(ref-404047-S41515203252011061000000)
Check the signal cable between control module terminal #B44 (#B54) and air conditioning (A/C) relay terminal #4. Check for a short-circuit to supply voltage.
Remedy as necessary.
Other information
- To connect the breakout box, see «Connecting the breakout box»(ref-403956-S00897666572011061000000)
- For information about signals, see «Signal specification»(ref-403973-S19941283772011061000000)
- See «Checking wiring and terminals»(ref-438291-S01987812252011120100000) .
Scheme 417
- Continue Refer to «Verification»(ref-404047-S03991816202011061000000)
Check the cable between control module terminal #B44 (#B54) and air conditioning (A/C) relay terminal #4. Check for a short-circuit to ground. See Short-circuit to ground, permanent faults . Check for an open-circuit. See Open-circuit, permanent faults .
Check the cable between air conditioning (A/C) relay terminal #2 and fuse 5 (in the engine compartment integrated relay / fusebox). Check for an open-circuit. See Open-circuit, permanent faults .
Remedy as necessary.
Other information
- To connect the breakout box, see «Connecting the breakout box»(ref-403956-S00897666572011061000000)
- To access and replace the air conditioning (A/C) relay, see «Replacing relays in the main fuse box and other relays in the engine compartment»(ref-438318-S26822509152011120100000)
- For information about signals, see «Signal specification»(ref-403973-S19941283772011061000000) .
Was a fault found in the wiring?
- YES Refer to «Verification»(ref-404047-S24547969142011061000000)
- NO Refer to «Replacing the component»(ref-404047-S19624561472011061000000)
Check control module and air conditioning (A/C) pressure sensor connector for contact resistance and oxidation according to Contact resistance and oxidation and loose connections according to Loose connections (terminals) .
Check signal cable between control module #B44 (#B54) and air conditioning (A/C) relay #4 for an intermittent short-circuit to supply voltage according to Open-circuit, intermittent faults and an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults .
Check cable between air conditioning (A/C) relay #2 and fuse 5 (in the engine compartment integrated relay/fusebox) for an intermittent open-circuit according to Open-circuit, intermittent faults .
Other information
- To connect the breakout box, see «Connecting the breakout box»(ref-403956-S00897666572011061000000) .
- To access/replace the control module, see «Replacing the engine control module (ECM)»(ref-404033-S34042663912011061000000) .
- To access/replace the air conditioning (A/C) relay, see «Replacing relays in the main fuse box and other relays in the engine compartment»(ref-438318-S26822509152011120100000)
- To localize the outside temperature sensor, see «Location of components»(ref-403970-S02481495422011061000000) .
- For information about signals, see «Signal specification»(ref-403973-S19941283772011061000000) .
- Continue Refer to «Information»(ref-404047-S41171844122011061000000)
Check control module and air conditioning (A/C) pressure sensor connector for contact resistance and oxidation according to Contact resistance and oxidation and loose connections according to Loose connections (terminals) .
Check signal cable between control module #B44 (#B54) and air conditioning (A/C) relay #4 for an intermittent short-circuit to supply voltage according to Open-circuit, intermittent faults and an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults .
Check cable between air conditioning (A/C) relay #2 and fuse 5 (in the engine compartment integrated relay/fusebox) for an intermittent open-circuit according to Open-circuit, intermittent faults .
Other information
- To connect the breakout box, see «Connecting the breakout box»(ref-403956-S00897666572011061000000) .
- To access/replace the control module, see «Replacing the engine control module (ECM)»(ref-404033-S34042663912011061000000) .
- To access/replace the air conditioning (A/C) relay, see «Replacing relays in the main fuse box and other relays in the engine compartment»(ref-438318-S26822509152011120100000)
- To localize the outside temperature sensor, see «Location of components»(ref-403970-S02481495422011061000000) .
- For information about signals, see «Signal specification»(ref-403973-S19941283772011061000000) .
- Continue Refer to «Information»(ref-404047-S38497542632011061000000)
Check the engine cooling fan (FC) relay connector. Check for contact resistance and oxidation.
Check the power supply cable. Check for an intermittent open-circuit. Also check that the fuse is intact.
Check the cable between engine control module (ECM) terminal #A7 and engine cooling fan (FC) relay terminal #IN1. Check for an intermittent open-circuit.
Remedy as necessary
Other information
- To connect the breakout box, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
- For information about signals, see «Signal specification»(ref-438318-S23639998362011120100000) .
- See «Contents»(ref-438291-S00903409402011120100000)
- The engine cooling fan (FC) relay is supplied with power via fuse 11A/1.
Scheme 418
Scheme 419
- Continue Refer to «Information»(ref-404047-S12979297702011061000000)
Check the engine cooling fan (FC) relay connector. Check for contact resistance and oxidation.
Check the power supply cable. Check for an open-circuit. Also check that the fuse is intact.
Check the cable between engine control module (ECM) terminal #A7 and engine cooling fan (FC) relay terminal #IN1. Check for an open-circuit.
Remedy as necessary
Other information
- To connect the breakout box, see «Connecting the breakout box»(ref-403956-S37247582692011061000000)
- For information about signals, see «Signal specification»(ref-438318-S23639998362011120100000)
- See «Contents»(ref-438291-S00903409402011120100000)
- The engine cooling fan (FC) relay is supplied with power via fuse 11A/1.
- Continue Refer to «Verification»(ref-404047-S13486255682011061000000)
Check the cable between engine control module (ECM) terminal #A7 (#A7) and engine cooling fan (FC) relay terminal #IN1. Check for an intermittent short-circuit to supply voltage.
Remedy as necessary.
Other information
- To connect the breakout box, see «Connecting the breakout box»(ref-403956-S37247582692011061000000)
- For information about signals, see «Signal specification»(ref-438318-S23639998362011120100000)
- See «Contents»(ref-438291-S00903409402011120100000) .
Scheme 420
- Continue Refer to «Information»(ref-404047-S14392820832011061000000)
Check the cable between engine control module (ECM) terminal #A7 (#A7) and engine cooling fan (FC) relay terminal #IN1. Check for a short-circuit to supply voltage.
Remedy as necessary
Other information
- To connect the breakout box, see «Connecting the breakout box»(ref-403956-S37247582692011061000000)
- For information about signals, see «Signal specification»(ref-438318-S23639998362011120100000)
- See «Contents»(ref-438291-S00903409402011120100000) .
- Continue Refer to «Verification»(ref-404047-S42935012942011061000000)
Check the power supply cable. Check for an intermittent short-circuit to ground. Also check that the fuse is intact.
Check the cable between engine control module (ECM) terminal #A7 (#A7) and engine cooling fan (FC) relay terminal #IN1. Check for an intermittent short-circuit to ground.
Remedy as necessary.
Other information
- To connect the breakout box, see «Connecting the breakout box»(ref-403956-S37247582692011061000000)
- For information about signals, see «Signal specification»(ref-438318-S23639998362011120100000)
- See «Contents»(ref-438291-S00903409402011120100000)
- The engine cooling fan (FC) relay is supplied with power via fuse 11A/1.
- Continue Refer to «Information»(ref-404047-S07385315972011061000000)
Check the power supply cable. Check for a short-circuit to ground. Also check that the fuse is intact.
Check the cable between engine control module (ECM) terminal #A7 (#A7) and engine cooling fan (FC) relay terminal #IN1. Check for a short-circuit to ground.
Remedy as necessary.
Other information
- To connect the breakout box, see «Connecting the breakout box»(ref-403956-S37247582692011061000000)
- For information about signals, see «Signal specification»(ref-438318-S23639998362011120100000)
- See «Contents»(ref-438291-S00903409402011120100000)
- Continue Refer to «Verification»(ref-404047-S32194465362011061000000)
Check the signal cable between control module terminal A6 and engine cooling fan (FC) relay terminal B1 for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults .
If no fault is found in the cable, try a new relay for the engine cooling fan (FC).
Other information
- To connect the breakout box, see «Connecting the breakout box»(ref-403956-S00897666572011061000000) .
- To access / replace the control module, see «Replacing the engine control module (ECM)»(ref-404033-S34042663912011061000000) .
- To access / replace the engine cooling fan (FC) relay, see «Replacing relays in the main fuse box and other relays in the engine compartment»(ref-438318-S26822509152011120100000) .
- For information about signals, see «Signal specification»(ref-403973-S19941283772011061000000) .
- Continue Refer to «Verification»(ref-404047-S10025799812011061000000)
Check cable between control module #A6 and engine cooling fan (FC) relay #B1 for 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 cable between engine cooling fan (FC) relay #B30 and main fuse 1 for an open-circuit according to Open-circuit, permanent faults .
If no fault is found in the wiring, try a new relay for the engine cooling fan (FC).
Other information
- To connect the breakout box, see «Connecting the breakout box»(ref-403956-S00897666572011061000000) .
- To access/replace the control module, see «Replacing the engine control module (ECM)»(ref-404033-S34042663912011061000000) .
- To access/replace engine cooling fan (FC) relay, see «Replacing relays in the main fuse box and other relays in the engine compartment»(ref-438318-S26822509152011120100000) .
- For information about signals, see «Signal specification»(ref-403973-S19941283772011061000000) .
- Continue Refer to «Verification»(ref-404047-S01762797232011061000000)
Check engine cooling fan (FC) relay connector for contact resistance and oxidation according to Contact resistance and oxidation
Check power supply cable for an intermittent open-circuit according to Open-circuit, intermittent faults , also check that the fuse has not blown.
Check cable between engine control module (ECM) #A6 and engine cooling fan (FC) relay #IN2 for an intermittent open-circuit according to Open-circuit, intermittent faults .
Remedy as necessary
Other information
- To connect the breakout box, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
- For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
- The engine cooling fan (FC) relay is supplied with power via fuse 11A/1
- Continue Refer to «Information»(ref-404047-S23471518512011061000000)
Check engine cooling fan (FC) relay connector for contact resistance and oxidation according to Contact resistance and oxidation .
Check the power supply cable for an open-circuit according to Open-circuit, permanent faults , also check that the fuse has not blown.
Check cable between engine control module (ECM) #A6 and engine cooling fan (FC) relay #IN2 for an open-circuit according to Open-circuit, permanent faults .
Remedy as necessary
Other information
- To connect the breakout box, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
- For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
- The engine cooling fan (FC) relay is supplied with power via fuse 11A/1.
- Continue Refer to «Verification»(ref-404047-S27249009692011061000000)
Check cable between engine control module (ECM) #A6 (#A6) and engine cooling fan (FC) relay #IN2 for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults .
Remedy as necessary.
Other information
- To connect the breakout box, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
- For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
- Continue Refer to «Information»(ref-404047-S13992326662011061000000)
Check cable between engine control module (ECM) #A6 (#A6) and engine cooling fan (FC) relay #IN2 for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults .
Remedy as necessary.
Other information
- To connect the breakout box, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
- For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
- Continue Refer to «Verification»(ref-404047-S08701054472011061000000)
Check power supply cable for an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults , also check that the fuse has not blown.
Check cable between engine control module (ECM) #A6 (#A6) and engine cooling fan (FC) relay #IN2 for an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults .
Remedy as necessary.
Other information
- To connect the breakout box, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
- For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
- The engine cooling fan (FC) relay is supplied with power via fuse 11A/1
- Continue Refer to «Information»(ref-404047-S09023575292011061000000)
Check power supply cable for a short-circuit to ground according to Short-circuit to ground, permanent faults , also check that the fuse has not blown.
Check cable between engine control module (ECM) #A6 (#A6) and engine cooling fan (FC) relay #IN2 for a short-circuit to ground according to Short-circuit to ground, permanent faults .
Remedy as necessary.
Other information
- To connect the breakout box, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
- For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
- The engine cooling fan (FC) relay is supplied with power via fuse 11A/1.
- Continue Refer to «Verification»(ref-404047-S40414062852011061000000)
Check the engine cooling fan (FC) relay connector. Check for contact resistance and oxidation.
Check the power supply cable. Check for an open-circuit. Also check that the fuse is intact.
Check the cable between engine control module (ECM) terminal #A32 (#A32) and engine cooling fan (FC) relay terminal #IN2. Check for an open-circuit.
Remedy as necessary.
Other information
- See «Contents»(ref-438291-S00903409402011120100000)
- To connect the breakout box, see «Connecting the breakout box»(ref-403956-S37247582692011061000000)
- For information about signals, see «Signal specification»(ref-438318-S23639998362011120100000)
- The engine cooling fan (FC) relay is supplied with power via fuse 11A/1.
- Continue Refer to «Verification»(ref-404047-S22877381732011061000000)
Check the cable between engine control module (ECM) terminal #A32 (#A32) and engine cooling fan (FC) relay terminal #IN2. Check for a short-circuit to supply voltage.
Remedy as necessary.
Other information
- To connect the breakout box / access the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000)
- For information about signals, see «Signal specification»(ref-438318-S23639998362011120100000)
- See «Contents»(ref-438291-S00903409402011120100000) .
- Continue Refer to «Verification»(ref-404047-S38891816252011061000000)
Check the power supply cable. Check for a short-circuit to ground. Also check that the fuse is intact.
Check the cable between engine control module (ECM) terminal #A32 (#A32) and engine cooling fan (FC) relay terminal #IN2. Check for a short-circuit to ground.
Remedy as necessary.
Other information
- See «Contents»(ref-438291-S00903409402011120100000)
- To connect the breakout box, see «Connecting the breakout box»(ref-403956-S37247582692011061000000)
- For information about signals, see «Signal specification»(ref-438318-S23639998362011120100000)
- The engine cooling fan (FC) relay is supplied with power via fuse 11A/1.
- Continue Refer to «Verification»(ref-404047-S39844273302011061000000)
| CAUTION | Do not take resistance readings. This may damage the integrated circuit board. |
Check the signal cable between control module terminal A52 and assisted air control valve terminal 3 for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults . Check for a short-circuit to ground according to Short-circuit to ground, permanent faults . Check for an open-circuit according to Short-circuit to ground, permanent faults .
Check the cable between assisted air control valve terminal 2 and the fuse (11B/5) for an open-circuit according to Open-circuit, permanent faults .
Other information
- Connecting the breakout box / accessing the control module, see «Connecting the breakout box»(ref-403956-S00897666572011061000000) .
- To access / replace the assisted air control valve, see «Replacing assisted air control valve (AACV)»(ref-403955-S31896044532011061000000) .
- For information about signals, see «Signal specification»(ref-403973-S19941283772011061000000) .
Scheme 421
- Continue Refer to «Verification»(ref-404047-S16547222122011061000000)
Check the assisted air control valve terminals visually according to Inspect terminals visually .
Remedy as necessary.
Other information
- For information about signals, see «Signal specification»(ref-403973-S19941283772011061000000) .
Scheme 422
- Continue Refer to «Information»(ref-404047-S16791249052011061000000)
Check the cable between the engine control module (ECM) terminal #B48 (#B58) and combined instrument panel terminal #B1 (terminal #31). Check for an open-circuit.
Remedy as necessary.
Other information
- To connect the engine control module (ECM) breakout box, see «Connecting the breakout box»(ref-403956-S37247582692011061000000)
- To connect the combined instrument panel breakout box, see «Connecting breakout box, Combined instrument panel»(ref-403981-S13544277982011061000000)
- To access or replace the combined instrument panel, see «Replacing the driver information control unit»(ref-403985-S02184891652011061000000)
- For information about signals, see «Signal specification»(ref-438318-S23639998362011120100000)
- See «Contents»(ref-438291-S00903409402011120100000) .
Scheme 423
- Continue Refer to «Verification»(ref-404047-S40001949342011061000000)
Check cable between engine control module (ECM) #B41 (#B51) and combined instrument panel #B16 for an intermittent open-circuit according to Open-circuit, intermittent faults .
Remedy as necessary
Other information
- To connect the breakout box/access the engine control module (ECM), see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
- To connect the combined instrument panel breakout box, see «Connecting the Driver Information Module (DIM) test box»(ref-403972-S02051680582011061000000) .
- For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
Scheme 424
- Continue Refer to «Information»(ref-404047-S19242427832011061000000)
Check the cable between the engine control module (ECM) terminal #B41 (#B51) and combined instrument panel terminal #B1 (terminal #31). Check for an open-circuit according to Open-circuit, permanent faults .
Remedy as necessary.
Other information
- To connect the engine control module (ECM) breakout box, see «Connecting the breakout box»(ref-403956-S37247582692011061000000)
- To connect the combined instrument panel breakout box, see «Connecting the Driver Information Module (DIM) test box»(ref-403972-S02051680582011061000000)
- To access and replace the combined instrument panel, see «Driver information module (DIM), replacing»(ref-404026-S24866906602011061000000)
- For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
- Continue Refer to «Verification»(ref-404047-S36776501282011061000000)
Check the cable between the engine control module (ECM) terminal #B48 (#B58) and combined instrument panel terminal #B1 (terminal #31). Check for a short-circuit to supply voltage.
Remedy as necessary.
Other information
- To connect the engine control module (ECM) breakout box, see «Connecting the breakout box»(ref-403956-S37247582692011061000000)
- To connect the combined instrument panel breakout box, see «Connecting breakout box, Combined instrument panel»(ref-403981-S13544277982011061000000)
- To access or replace the combined instrument panel, see «Replacing the driver information control unit»(ref-403985-S02184891652011061000000)
- For information about signals, see «Signal specification»(ref-438318-S23639998362011120100000)
- See «Contents»(ref-438291-S00903409402011120100000) .
- Continue Refer to «Verification»(ref-404047-S32700679872011061000000)
Check the cable between the engine control module (ECM) terminal #B41 (#B51) and combined instrument panel terminal #B1 (terminal #31). Check for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults .
Remedy as necessary.
Other information
- To connect the engine control module (ECM) breakout box, see «Connecting the breakout box»(ref-403956-S37247582692011061000000)
- To connect the combined instrument panel breakout box, see «Driver information module (DIM), replacing»(ref-404026-S24866906602011061000000)
- For information about signals see «Signal specification»(ref-403971-S16906518782011061000000) .
- Continue Refer to «Information»(ref-404047-S13501611412011061000000)
Check the cable between the engine control module (ECM) terminal #B41 (#B51) and combined instrument panel terminal #B1 (terminal #31). Check for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults .
Remedy as necessary.
Other information
- To connect the engine control module (ECM) breakout box, see «Connecting the breakout box»(ref-403956-S37247582692011061000000)
- To connect the combined instrument panel breakout box, see «Connecting the Driver Information Module (DIM) test box»(ref-403972-S02051680582011061000000)
- To access and replace the combined instrument panel, see «Driver information module (DIM), replacing»(ref-404026-S24866906602011061000000)
- For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
- Continue Refer to «Verification»(ref-404047-S39709351392011083100000)