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Jeep WG Grand Cherokee 2002, Руководство по обслуживанию

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Jeep WG Grand Cherokee 2002 Скачать руководство пользователя страница 62

TEST

ACTION

APPLICABILITY

4

Disconnect the CAB harness connector.
Turn the ignition on.
Measure the voltage of the Fused Ignition Switch circuit.
Is the voltage above 10 volts?

All

Yes

→

Go To

5

No

→

Repair the Fused Ignition Switch Output Circuit for high resis-
tance
Perform ABS VERIFICATION TEST - VER 1.

5

If there are no potential causes remaining, view repair.

All

Repair

Replace the Controller Antilock Brake.
Perform ABS VERIFICATION TEST - VER 1.

6

Turn the ignition off.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wire harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Refer to any Hotline letters or Technical Service Bulletins that may apply.
Were any problems found?

All

Yes

→

Repair as necessary.
Perform ABS VERIFICATION TEST - VER 1.

No

→

Test Complete.

60

BRAKES (CAB)

SYSTEM UNDERVOLTAGE —

Continued

ProCarManuals.com

Содержание WG Grand Cherokee 2002

Страница 1: ...IIIT 5 3 5 DRBIIIT ERROR MESSAGES 5 3 5 1 DRBIIIT DOES NOT POWER UP BLANK SCREEN 5 3 5 2 DISPLAY IS NOT VISIBLE 5 4 0 DISCLAIMERS SAFETY WARNINGS 5 4 1 DISCLAIMERS 5 4 2 SAFETY 6 4 2 1 TECHNICIAN SAFE...

Страница 2: ...0 COMPONENT LOCATIONS 63 8 1 CONTROLLER ANTILOCK BRAKE 63 8 2 DATA LINK CONNECTOR 63 8 2 1 DIAGNOSTIC JUNCTION PORT 63 8 3 FUSES 64 8 4 TONE WHEELS 64 8 5 WHEEL SPEED SENSORS 65 8 6 WHEEL SPEED SENSO...

Страница 3: ...roper operation 2 0 IDENTIFICATION OF SYSTEM Vehicles equipped with the Teves Mark 20 an tilock brake system can be identified by the pres ence of the hydraulic control unit located with the controlle...

Страница 4: ...he Controller Antilock Brake CAB When investigat ing a hard pedal feel inspect the sensor and tone wheel teeth for chips broken teeth damaged sensor pole tips excessive runout of the tone wheel or exc...

Страница 5: ...et valve will return to the normally closed position Pump Motor Assembly The pump motor as sembly provides the extra amount of fluid needed during antilock braking The pump is supplied fluid that is r...

Страница 6: ...ited when the vehicle is in reverse or when cruise control is activated Memory An optional memory feature is available This allows storing of one or two preferred pedal positions in the Adjustable Ped...

Страница 7: ...diagnostic trouble codes erasing diagnostic trouble codes and other DRBIIIt functions 3 5 DRBIIIT ERROR MESSAGES Under normal operation the DRBIIIt will dis play one of only two error messages User Re...

Страница 8: ...with approved repair and installation pro cedures in the service manual should be serviced 4 2 4 DRBIIIT SAFETY INFORMATION WARNING EXCEEDING THE LIMITS OF THE DRBIIIT MULTIMETER IS DANGEROUS IT CAN E...

Страница 9: ...ABS if the CAB Power Feed Circuit diagnostic trouble code is present it must be repaired prior to addressing any other DTC s If any additional codes are present proceed to the appropriate test 5 For A...

Страница 10: ...Variable Brake Propor tioning HCU hydraulic control unit HZ Hertz JBLK junction block JTEC Jeep and Truck Engine Controller LF left front LR left rear PCI Programmable Communication In terface PCM Po...

Страница 11: ...7 0 DIAGNOSTIC INFORMATION AND PROCEDURES 9 ProCarManuals com...

Страница 12: ...ION APPLICABILITY 1 With the DRBIIIt erase DTC s With the DRBIIIt read DTC s Does the DRBIIIt display PEDAL SENSOR OPEN SHORTED TO BATTERY DTC active All Yes Go To 2 No Go To 4 2 Disconnect the Adjust...

Страница 13: ...ATION TEST VER 1 No Replace and program the Adjustable Pedals Module in accordance with the Service Information Perform ADJUSTABLE PEDALS VERIFICATION TEST VER 1 4 Turn the ignition off Visually inspe...

Страница 14: ...All Yes Inspect for and correct wiring damage If no damage is found replace and program the Adjustable Pedals Module in accordance with the Service Information Perform ADJUSTABLE PEDALS VERIFICATION T...

Страница 15: ...onnect the Adjustable Pedals switch connector Turn the ignition on With the DRBIIIt read DTC s Does the DRBIIIt display PEDAL SW STUCK FORWARD DTC active All Yes Go To 3 No Replace the Adjustable Peda...

Страница 16: ...inspect the related wire harness connectors Look for broken bent pushed out or corroded terminals Refer to any Hotline letters or Technical Service Bulletins that may apply Were any problems found Al...

Страница 17: ...connect the Adjustable Pedals switch connector Turn the ignition on With the DRBIIIt read DTC s Does the DRBIIIt display PEDAL SW STUCK REARWARD DTC active All Yes Go To 3 No Replace the Adjustable Pe...

Страница 18: ...inspect the related wire harness connectors Look for broken bent pushed out or corroded terminals Refer to any Hotline letters or Technical Service Bulletins that may apply Were any problems found All...

Страница 19: ...VOLTAGE HIGH APM INTERNAL FAILURE TEST ACTION APPLICABILITY 1 With the DRBIIIt read the vehicle voltage status Does the DRBIIIt display a high voltage concern All Yes Refer to Charging information fo...

Страница 20: ...E CAUSES VEHICLE VOLTAGE LOW APM INTERNAL FAILURE TEST ACTION APPLICABILITY 1 With the DRBIIIt read the vehicle voltage status Does the DRBIIIt display a low voltage concern All Yes Refer to Charging...

Страница 21: ...EST VER 1 No Go To 2 2 With the DRBIIIt erase DTC s With the DRBIIIt read DTC s With the DRBIIIt in Inputs Outputs read the In Plant mode state Are any DTCs active or is the APM in the In Plant mode A...

Страница 22: ...Motor Sensor connector Check the FWD and AFT circuits for short to battery to ground to each other and for an open Is the FWD or AFT circuit shorted or open All Yes Repair the Adjustable Pedals Motor...

Страница 23: ...lant mode or refer to symptom list for problems related to the active DTC Perform ADJUSTABLE PEDALS VERIFICATION TEST VER 1 No Go To 2 2 Attempt to set and recall other memory functions in the vehicle...

Страница 24: ...EN BRAKE FLUID LEVEL SWITCH SENSE CIRCUIT SHORTED TO GROUND BRAKE FLUID LEVEL SWITCH SENSE AND GROUND CIRCUITS SHORTED TOGETHER CAB INTERNAL SHORT INTERMITTENT DTC TEST ACTION APPLICABILITY 1 Inspect...

Страница 25: ...Check connector Clean repair as necessary Disconnect the CAB harness connector Turn the ignition on Using a 12 volt test light connected to ground check the Fluid Level Sense circuit Does the test lig...

Страница 26: ...ON TEST VER 1 No Go To 9 9 Turn the ignition off Disconnect the Brake Fluid Level Switch connector Note Check connector Clean repair as necessary Disconnect the CAB connector Check connector Clean rep...

Страница 27: ...RCUIT OPEN B CIRCUIT INTERMITTENTLY SHORTED TO GROUND B CIRCUIT SHORTED TO GROUND CAB FUSED B CIRCUIT OPEN CAB FUSED B CIRCUIT SHORTED TO GROUND TEST ACTION APPLICABILITY 1 Turn the ignition on With t...

Страница 28: ...to 12 volts probe the Fused B Circuit at the Junction Block fuse terminal Is the test light on All Yes Replace the CAB Perform ABS VERIFICATION TEST VER 1 No Go To 6 6 Turn the ignition off If there a...

Страница 29: ...Look for any chafed pierced pinched or partially broken wires Visually inspect the related wire harness connectors Look for broken bent pushed out or corroded terminals Refer to any Hotline letters o...

Страница 30: ...the Cluster category for the related symptom s Perform ABS VERIFICATION TEST VER 1 No Go To 2 2 With the DRB erase DTC s Turn the ignition on and wait approximately 1 minute With the DRB read DTC s D...

Страница 31: ...concerns found All Yes Repair as necessary Perform ABS VERIFICATION TEST VER 1 No Go To 2 2 Turn the ignition off Disconnect the CAB harness connector Note Check connector Clean repair as necessary Me...

Страница 32: ...T ACTION APPLICABILITY 4 If there are no possible causes remaining view repair All Repair Replace the CAB Perform ABS VERIFICATION TEST VER 1 30 BRAKES CAB CONTROLLER FAILURE Continued ProCarManuals c...

Страница 33: ...shorted or open for 2 minutes while driving or an otherwise improper signal is detected at any time the Diagnostic Trouble Code DTC is set POSSIBLE CAUSES CAB INTERNAL FAILURE TEST ACTION APPLICABILI...

Страница 34: ...N CAB NO OUTPUT INTERMITTENT CIRCUIT DTC LEFT FRONT WHEEL SPEED SENSOR NO OUTPUT CAB UNABLE TO READ LEFT FRONT WHEEL SPEED SENSOR SIGNAL TEST ACTION APPLICABILITY 1 Turn the ignition on With the DRBII...

Страница 35: ...ontroller Antilock Brake in accordance with the Service Information Perform ABS VERIFICATION TEST VER 1 5 Turn ignition off Disconnect the CAB harness connector Remove the harness strain relief to acc...

Страница 36: ...IFICATION LEFT FRONT WHEEL BEARING OUT OF SPECIFICATION LEFT FRONT WHEEL SPEED SENSOR INOPERATIVE CAB WON T RESPOND TO LEFT FRONT WHEEL SPEED SENSOR SIGNAL INTERMITTENT SIGNAL DTC TEST ACTION APPLICAB...

Страница 37: ...ecessary for proce dures or specifications Is the bearing clearance OK All Yes Go To 6 No Repair as necessary The CAB must sense all four wheels at 25 km h 15 mph before it will extinguish the ABS Ind...

Страница 38: ...to lining contamination or overheating Inspect all Components for defects which may cause a Signal DTC to set Is any Component Damaged All Yes Repair as necessary The CAB must sense all four wheels a...

Страница 39: ...EN CAB NO OUTPUT LEFT REAR WHEEL SPEED SENSOR NO OUTPUT CAB UNABLE TO READ LEFT REAR WHEEL SPEED SENSOR SIGNAL INTERMITTENT CIRCUIT DTC TEST ACTION APPLICABILITY 1 Turn the ignition on With the DRBIII...

Страница 40: ...BS VERIFICATION TEST VER 1 5 Turn ignition off Disconnect the CAB harness connector Remove the harness strain relief to access the wires in the CAB connector Using a DC voltmeter and special tool 6801...

Страница 41: ...WHEEL SPEED SENSOR AIR GAP OUT OF SPECIFICATION WHEEL BEARINGS OUT OF SPECIFICATION LEFT REAR WHEEL SPEED SENSOR INOPERATIVE CAB WON T RESPOND TO WHEEL SPEED SENSOR SIGNAL INTERMITTENT SIGNAL DTC TEST...

Страница 42: ...necessary for proce dures or specifications Is the bearing clearance OK All Yes Go To 6 No Repair as necessary The CAB must sense all four wheels at 25 km h 15 mph before it will extinguish the ABS In...

Страница 43: ...to lining contamination or overheating Inspect all Components for defects which may cause a Signal DTC to set Is any Component Damaged All Yes Repair as necessary The CAB must sense all four wheels a...

Страница 44: ...mpt to communicate with the MIC Was the DRB able to I D or communicate with the MIC All Yes Go To 2 No Refer to the Communication category and perform the symptom Bus Signals Open from the Controller...

Страница 45: ...B but without sufficient voltage to operate it POSSIBLE CAUSES CAB PUMP MOTOR RUNNING CONTINUOUSLY ABS PUMP MOTOR INTERMITTENT DTC FUSED B CIRCUIT INTERMITTENTLY SHORTED TO GROUND FUSED B CIRCUIT SHOR...

Страница 46: ...EST VER 1 5 Turn the ignition off Remove the ABS PUMP Fuse 4 from the Power Distribution Center PDC Disconnect the CAB connector Make sure the Pump Motor connector is secure Note Check connector Clean...

Страница 47: ...uish the ABS Indicator Perform ABS VERIFICATION TEST VER 1 9 Turn the ignition on Using a 12 volt test light connected to ground check the B supply to Fuse 4 in the PDC Is the B supply OK All Yes Go T...

Страница 48: ...d circuit for an open The CAB must sense all four wheels at 25 km h 15 mph before it will extinguish the ABS Indicator Perform ABS VERIFICATION TEST VER 1 13 If there are no possible causes remaining...

Страница 49: ...EN CAB NO OUTPUT RIGHT FRONT WHEEL SPEED SENSOR NO OUTPUT CAB UNABLE TO READ RIGHT FRONT WHEEL SPEED SENSOR SIGNAL INTERMITTENT CIRCUIT DTC TEST ACTION APPLICABILITY 1 Turn the ignition on With the DR...

Страница 50: ...e in accordance with the Service Information Perform ABS VERIFICATION TEST VER 1 5 Turn ignition off Disconnect the CAB harness connector Remove the harness strain relief to access the wires in the CA...

Страница 51: ...EL SPEED SENSOR AIR GAP OUT OF SPECIFICATION WHEEL BEARINGS OUT OF SPECIFICATION RIGHT FRONT WHEEL SPEED SENSOR INOPERATIVE CAB WON T RESPOND TO WHEEL SPEED SENSOR SIGNAL INTERMITTENT SIGNAL DTC TEST...

Страница 52: ...ion if necessary for proce dures or specifications Is the bearing clearance OK All Yes Go To 6 No Repair as necessary The CAB must sense all four wheels at 25 km h 15 mph before it will extinguish the...

Страница 53: ...to lining contamination or overheating Inspect all Components for defects which may cause a Signal DTC to set Is any Component Damaged All Yes Repair as necessary The CAB must sense all four wheels at...

Страница 54: ...OUTPUT RIGHT REAR WHEEL SPEED SENSOR NO OUTPUT CAB UNABLE TO READ RIGHT REAR WHEEL SPEED SENSOR SIGNAL INTERMITTENT CIRCUIT DTC TEST ACTION APPLICABILITY 1 Turn the ignition on With the DRBIIIt read...

Страница 55: ...nformation Perform ABS VERIFICATION TEST VER 1 5 Turn ignition off Disconnect the CAB harness connector Remove the harness strain relief to access the wires in the CAB connector Using a DC voltmeter a...

Страница 56: ...R WHEEL SPEED SENSOR AIR GAP OUT OF SPECIFICATION WHEEL BEARINGS OUT OF SPECIFICATION RIGHT REAR WHEEL SPEED SENSOR INOPERATIVE CAB WON T RESPOND TO WHEEL SPEED SENSOR SIGNAL INTERMITTENT SIGNAL DTC T...

Страница 57: ...rvice information if necessary for proce dures or specifications Is the bearing clearance OK All Yes Go To 6 No Repair as necessary The CAB must sense all four wheels at 25 km h 15 mph before it will...

Страница 58: ...rness Visually inspect brakes for locking up due to lining contamination or overheating Inspect all Components for defects which may cause a Signal DTC to set Is any Component Damaged All Yes Repair a...

Страница 59: ...ITCH OUTPUT HIGH GROUND CIRCUIT OPEN CAB INTERNAL FAULT TEST ACTION APPLICABILITY 1 Turn the ignition on With the DRBIIIt erase DTC s Turn the ignition off Turn the ignition on Start the engine With t...

Страница 60: ...Yes Go To 5 No Repair the Ground circuit for an open Perform ABS VERIFICATION TEST VER 1 5 If there are no potential causes remaining view repair All Repair Replace the Controller Anti Lock Brake in...

Страница 61: ...e ignition off Turn the ignition on Start the engine Drive the vehicle above 16 km h 10 mph for at least 20 seconds Stop the vehicle With the DRBIIIt read DTC s Does the DRBIIIt display System Undervo...

Страница 62: ...epair Replace the Controller Antilock Brake Perform ABS VERIFICATION TEST VER 1 6 Turn the ignition off Visually inspect the related wiring harness Look for any chafed pierced pinched or partially bro...

Страница 63: ...veral antilock braking stops 9 Caution Ensure braking capability is available before road testing 10 Again with the DRBIIIt read DTC s If any DTC s are present return to Symptom list 11 If there are n...

Страница 64: ...NOTES 62 ProCarManuals com...

Страница 65: ...8 0 COMPONENT LOCATIONS 8 1 CONTROLLER ANTILOCK BRAKE 8 2 DATA LINK CONNECTOR 8 2 1 DIAGNOSTIC JUNCTION PORT C O M P O N E N T L O C A T I O N S 63 COMPONENT LOCATIONS ProCarManuals com...

Страница 66: ...8 3 FUSES 8 4 TONE WHEELS LEFT FRONT RIGHT FRONT LEFT REAR RIGHT REAR C O M P O N E N T L O C A T I O N S 64 COMPONENT LOCATIONS ProCarManuals com...

Страница 67: ...5 WHEEL SPEED SENSORS LEFT FRONT RIGHT FRONT LEFT REAR RIGHT REAR 8 6 WHEEL SPEED SENSOR CONNECTORS LEFT FRONT RIGHT FRONT C O M P O N E N T L O C A T I O N S 65 COMPONENT LOCATIONS ProCarManuals com...

Страница 68: ...8 7 ADJUSTABLE PEDALS SWITCH 8 8 ADJUSTABLE PEDALS MODULE 8 9 ADJUSTABLE PEDALS COMPONENTS C O M P O N E N T L O C A T I O N S 66 COMPONENT LOCATIONS ProCarManuals com...

Страница 69: ...RETURN 4 5 Q111 16OR GY AJDUSTABLE PEDALS MOTOR REARWARD 6 Q110 16OR VT ADJUSTABLE PEDALS MOTOR FORWARD CONTROLLER ANTILOCK BRAKE BLACK 24 WAY CAV CIRCUIT FUNCTION 1 Z101 12BK OR GROUND 2 B1 18YL DB...

Страница 70: ...VOLT SUPPLY 2 B3 18LG DB LEFT REAR WHEEL SPEED SENSOR SIGNAL RIGHT FRONT WHEEL SPEED SENSOR GRAY 2 WAY CAV CIRCUIT FUNCTION 1 B7 18WT RIGHT FRONT WHEEL SPEED SENSOR 12 VOLT SUPPLY 2 B6 18WT DB RIGHT F...

Страница 71: ...10 0 SCHEMATIC DIAGRAMS 10 1 WJ BODY TEVES MARK 20 S C H E M A T I C D I A G R A M S 69 SCHEMATIC DIAGRAMS ProCarManuals com...

Страница 72: ...10 2 ADJUSTABLE PEDALS SYSTEM S C H E M A T I C D I A G R A M S 70 SCHEMATIC DIAGRAMS ProCarManuals com...

Страница 73: ...NOTES 71 ProCarManuals com...

Страница 74: ...NOTES 72 ProCarManuals com...

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