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Home >> Isuzu >> 1997 >> Trooper LS >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System - Introduction >> Self-Diagnostics >> Retrieving DTCS Using Abs Warning Light >> Passport, Rodeo, SLX & Trooper
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Passport, Rodeo, SLX & Trooper

  1. When ABS warning light remains on, EBCM will store DTCs and disable ABS system. If DTCs are not displayed, wiring harness from EBCM to ABS warning light may be disconnected. Check and repair harness if necessary.
  2. Ensure ignition is off and brake pedal is released. Using a jumper wire, jumper Data Link Connector (DLC) terminals No. 4 and 12. See Fig 1. Turn ignition on. DTC will be displayed by flashing ABS warning light.
  3. A stored DTC will be displayed 3 times, each being separated by a 3.2 second pause. If multiple DTCs are set, second DTC will follow after first DTC is displayed a third time. All DTCs contain 2 digits. First digit of DTC is identified by a series of 0.4 second flashes. After a 1.2 second pause, second digit of DTC will follow in another series of 0.4 second flashes. If no DTCs have been stored, ABS warning light will repeat DTC 12 (system normal).
  4. Once DTCs are retrieved, proceed to appropriate DTC IDENTIFICATION table. Identify DTC and perform diagnostic test specified. See appropriate 4-WHEEL ANTI-LOCK - SELF-DIAGNOSTICS article. After repairs, DTCs must be cleared. See CLEARING DIAGNOSTIC TROUBLE CODES.
Fig 1: Identifying Data Link Connector (Passport, Rodeo & SLX Shown; Trooper Is Similar)
G96J20650Courtesy of ISUZU MOTOR CO.
NOTE: Before proceeding with any diagnostic tests, perform DIAGNOSTIC SYSTEM CHECK (Hombre), or DIAGNOSTIC CIRCUIT CHECK (Passport and Rodeo). See appropriate 4-WHEEL ANTI-LOCK - SELF-DIAGNOSTICS article. On Trooper, proceed directly to DIAGNOSTIC TESTS in appropriate 4-WHEEL ANTI-LOCK - SELF-DIAGNOSTICS article.
DTC IDENTIFICATION (HOMBRE)

DTC Description (1) Go To
C0021 RF Wheel Speed Sensor Circuit Open Or Shorted To Power DTC C0021
C0022 Missing RF Wheel Speed Sensor Signal DTC C0022
C0023 Erratic RF Wheel Speed Sensor Signal DTC C0023
C0025 LF Wheel Speed Sensor Circuit Open Or Shorted To Power DTC C0025
C0026 Missing LF Wheel Speed Sensor Signal DTC C0026
C0027 Erratic LF Wheel Speed Sensor Signal DTC C0027
C0029 Simultaneous Drop-Out Of Front Wheel Speed Sensor Signals DTC C0029
C0035 Rear Wheel Speed Sensor Circuit Open Or Shorted To DTC C0035
C0036 Missing Rear Wheel Speed Sensor Signal DTC C0036
C0037 Erratic Rear Wheel Speed Sensor Signal DTC C0037
C0038 Wheel Speed Signal Malfunction DTC C0038
C0041 RF Isolation Solenoid Circuit Open DTC C0041-66
C0042 RF Dump Solenoid Circuit Open DTC C0041-66
C0043 RF Isolation Solenoid Circuit Shorted DTC C0041-66
C0044 RF Dump Solenoid Circuit Shorted DTC C0041-66
C0045 LF Isolation Solenoid Circuit Open DTC C0041-66
C0046 LF Dump Solenoid Circuit Open DTC C0041-66
C0047 LF Isolation Solenoid Circuit Shorted DTC C0041-66
C0048 LF Dump Solenoid Circuit Shorted DTC C0041-66
C0051 Rear Isolation Solenoid Circuit Open DTC C0041-66
C0052 Rear Dump Solenoid Circuit Open DTC C0041-66
C0053 Rear Isolation Solenoid Circuit Shorted DTC C0041-66
C0054 Rear Dump Solenoid Circuit Shorted DTC C0041-66
C0065 Pump Motor Relay Circuit Open DTC C0041-66
C0066 Pump Motor Relay Circuit Shorted DTC C0041-66
C0067 Pump Motor Circuit Open DTC C0067
C0068 Pump Motor Locked Or Pump Motor Circuit Shorted DTC C0068
C0071-74 EBCM Internal Fault DTC C0071-74
C0081 Brakelight Switch Always Closed Or Shorted DTC C0081
C0086 ABS Warning Light Circuit Shorted To Power DTC C0086
C0088 Brake Warning Light Circuit Shorted To Power DTC C0088
(1) See appropriate 4 WHEEL ANTI-LOCK - SELF-DIAGNOSTICS article.
DTC IDENTIFICATION (PASSPORT, RODEO & SLX)

DTC Description (1) Go To
14 ABS Enable Relay Contact Circuit Open DTC 14
15 ABS Enable Relay Circuit Short To Battery Or Closed DTC 15
16 ABS Enable Relay Coil Circuit Open DTC 16
17 ABS Enable Relay Coil Circuit Short To Ground DTC 17
18 ABS Enable Relay Coil Circuit Short To Battery DTC 18
21 LF Wheel Speed=0 DTC 21
22 RF Wheel Speed=0 DTC 22
23 LR Wheel Speed=0 (4WD) DTC 23
24 RR Wheel Speed=0 (4WD) DTC 24
24 Rear Wheel Speed=0 (2WD) DTC 24
25 LF Excessive Wheel Speed Variation DTC 25
26 RF Excessive Wheel Speed Variation DTC 26
27 LR Excessive Wheel Speed Variation (4WD) DTC 27
28 RR Excessive Wheel Speed Variation (4WD) DTC 28
28 Rear Excessive Wheel Speed Variation (2WD) DTC 28
31 Incorrect EBCM Installed DTC 31
32 LF Wheel Speed Sensor Circuit Open Or Short To Ground/Battery DTC 32
33 RF Wheel Speed Sensor Circuit Open Or Short To Ground/Battery DTC 33
34 LR Wheel Speed Sensor Circuit Open Or Short To Ground/Battery (4WD) DTC 34
34 Rear Wheel Speed Sensor Circuit Open Or Short To Ground/Battery (2WD) DTC 34
35 RR Wheel Speed Sensor Circuit Open Or Short To Ground/Battery (4WD) DTC 35
36 Low System Voltage DTC 36
37 High System Voltage DTC 37
38 LF ESB Will Not Hold Motor DTC 38
41 RF ESB Will Not Hold Motor DTC 41
42 Rear ESB Will Not Hold Motor DTC 42
44 LF Channel Will Not Move DTC 44
45 RF Channel Will Not Move DTC 45
46 Rear Channel Will Not Move DTC 46
47 LF Motor Free Spins DTC 47
48 RF Motor Free Spins DTC 48
51 Rear Motor Free Spins DTC 51
55 EBCM Malfunction DTC 55
56 LF Motor Circuit Open DTC 56
57 LF Motor Circuit Short To Ground DTC 57
58 LF Motor Circuit Short To Battery DTC 58
61 RF Motor Circuit Open DTC 61
62 RF Motor Circuit Short To Ground DTC 62
63 RF Motor Circuit Short To Battery DTC 63
64 Rear Motor Circuit Open DTC 64
65 Rear Motor Circuit Short To Ground DTC 65
66 Rear Motor Circuit Short To Battery DTC 66
71 Rear Solenoid Circuit Open Or Short To Ground DTC 71
72 Rear Solenoid Circuit Short To Battery DTC 72
76 LF Solenoid Circuit Open Or Short To Ground DTC 76
77 LF Solenoid Circuit Short To Battery DTC 77
78 RF Solenoid Circuit Open Or Short To Ground DTC 78
81 RF Solenoid Circuit Short To Battery DTC 81
82 Calibration Malfunction DTC 82
91 Open Brake Switch During Deceleration DTC 91
92 Open Brake Switch When ABS Was Required DTC 92
93 DTC 91 Or 92 Set In Current Or Previous Ignition Cycle DTC 93
94 Brake Switch Contacts Always Closed DTC 94
95 Brake Switch Circuit Open DTC 95
96 4WD Switch Circuit Open Or Short To Battery DTC 96
97 Accelerometer Circuit Short To Ground DTC 97
98 Accelerometer Circuit Open Or Short To Battery DTC 98
(1) See appropriate 4-WHEEL ANTI-LOCK - SELF-DIAGNOSTICS article.
DTC IDENTIFICATION (TROOPER)

DTC Description (1) Go To
12 (Start Code) Normal Display N/A
14 (EBCM Function) Abnormality In Input/Output, Operational & Control Circuits DTC 14
15 (Power Voltage Drop) Power Circuit DTC 15
21 ("G" Sensor) Disconnected Wire DTC 21
22 (Brakelight Switch) Disconnected Wire DTC 22
23 (Transmission Input) Input Abnormality DTC 23
32 (Hydraulic Motor & Motor Relay) Shorted Or Disconnected DTC 32
35 (Valve & Valve Relay) Shorted Or Disconnected Coil/Wiring DTC 35
41 (Left Front Holding Valve) Shorted Or Disconnected Coil/Wiring DTC 41
42 (Left Front Decompression Valve) Shorted Or Disconnected Coil/Wiring DTC 42
43 (Right Front Holding Valve) Shorted Or Disconnected Coil/Wiring DTC 43
44 (Right Front Decompression Valve) Shorted Or Disconnected Coil/Wiring DTC 44
45 (Rear Holding Valve) Shorted Or Disconnected Coil/Wiring DTC 45
46 (Rear Decompression Valve) Shorted Or Disconnected Coil/Wiring DTC 46
51 (Left Front Speed Sensor) Disconnected Coil/Wiring DTC 51
52 (Right Front Speed Sensor) Disconnected Coil/Wiring DTC 52
53 (Left Rear Speed Sensor) Disconnected Coil/Wiring DTC 53
54 (Right Rear Speed Sensor) Disconnected Coil/Wiring DTC 54
61 (Left Front Speed Sensor) Shorted Coil/Wiring DTC 61
62 (Right Front Speed Sensor) Shorted Coil/Wiring DTC 62
63 (Left Rear Speed Sensor) Shorted Coil/Wiring DTC 63
64 (Right Rear Speed Sensor) Shorted Coil/Wiring DTC 64
65 (Sensor Signal Input) Incorrect No. Of Teeth DTC 65
(1) See appropriate 4 WHEEL ANTI-LOCK - SELF-DIAGNOSTICS article.
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